Arnd Bergmann [Mon, 23 Apr 2007 19:08:15 +0000 (21:08 +0200)]
[POWERPC] spufs: make spu page faults not block scheduling
Until now, we have always entered the spu page fault handler
with a mutex for the spu context held. This has multiple
bad side-effects:
- it becomes impossible to suspend the context during
page faults
- if an spu program attempts to access its own mmio
areas through DMA, we get an immediate livelock when
the nopage function tries to acquire the same mutex
This patch makes the page fault logic operate on a
struct spu_context instead of a struct spu, and moves it
from spu_base.c to a new file fault.c inside of spufs.
We now also need to copy the dar and dsisr contents
of the last fault into the saved context to have it
accessible in case we schedule out the context before
activating the page fault handler.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:14 +0000 (21:08 +0200)]
[POWERPC] spu_base: move spu_init_channels out of spu_mutex
There is no reason to execute spu_init_channels under spu_mutex
after the spu has been taken off the freelist it's ours.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Luke Browning [Mon, 23 Apr 2007 19:08:13 +0000 (21:08 +0200)]
[POWERPC] spu sched: make addition to stop_wq and runque atomic vs wakeup
Addition to stop_wq needs to happen before adding to the runqeueue and
under the same lock so that we don't have a race window for a lost
wake up in the spu scheduler.
Signed-off-by: Luke Browning <lukebrowning@us.ibm.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:12 +0000 (21:08 +0200)]
[POWERPC] spufs: streamline locking for isolated spu setup
For quite a while now spu state is protected by a simple mutex instead
of the old rw_semaphore, and this means we can simplify the locking
around spu_setup_isolated a lot.
Instead of doing an spu_release before entering spu_setup_isolated and
then calling the complicated spu_acquire_exclusive we can now simply
enter the function locked an in guaranteed runnable state, so that the
only bit of spu_acquire_exclusive that's left is the call to
spu_unmap_mappings.
Similarly there's no more need to unlock and reacquire the state_mutex
when spu_setup_isolated is done, but we can always return with the
lock held and only drop it in spu_run_init in the failure case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:11 +0000 (21:08 +0200)]
[POWERPC] spufs: remove woken threads from the runqueue early
A single context should only be woken once, and we should not have
more wakeups for a given priority than the number of contexts on
that runqueue position.
Also add some asserts to trap future problems in this area more
easily.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Arnd Bergmann [Mon, 23 Apr 2007 19:08:10 +0000 (21:08 +0200)]
[POWERPC] spufs: add memory barriers after set_bit
set_bit does not guarantee ordering on powerpc, so using it
for communication between threads requires explicit
mb() calls.
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:09 +0000 (21:08 +0200)]
[POWERPC] spu sched: ensure preempted threads are put back on the runqueue, part2
To not lose a spu thread we need to make sure it always gets put back
on the runqueue. In find_victim aswell as in the scheduler tick as done
in the previous patch.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:08 +0000 (21:08 +0200)]
[POWERPC] spu sched: ensure preempted threads are put back on the runqueue
To not lose a spu thread we need to make sure it always gets put back
on the runqueue.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:07 +0000 (21:08 +0200)]
[POWERPC] spufs: clear mapping pointers after last close
Make sure the pointers to various mappings are cleared once the last
user stopped using them. This avoids accessing freed memory when
tearing down the gang directory aswell as optimizing away
pte invalidations if no one uses these.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Christoph Hellwig [Mon, 23 Apr 2007 19:08:06 +0000 (21:08 +0200)]
[POWERPC] spufs: use cancel_rearming_delayed_workqueue when stopping spu contexts
The scheduler workqueue may rearm itself and deadlock when we try to stop
it. Put a flag in place to avoid skip the work if we're tearing down
the context.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Paul Mackerras [Fri, 13 Apr 2007 00:46:21 +0000 (10:46 +1000)]
[POWERPC] Fix detection of loader-supplied initrd on OF platforms
Commit
79c8541924a220964f9f2cbed31eaa9fdb042eab introduced code to move
the initrd if it was in a place where it would get overwritten by the
kernel image. Unfortunately this exposed the fact that the code that
checks whether the values passed in r3 and r4 are intended to indicate
the start address and size of an initrd image was not as thorough as the
kernel's checks. The symptom is that on OF-based platforms, the
bootwrapper can cause an exception which causes the system to drop back
into OF.
Previously it didn't matter so much if the code incorrectly thought that
there was an initrd, since the values for start and size were just passed
through to the kernel. Now the bootwrapper needs to apply the same checks
as the kernel since it is now using the initrd data itself (in the process
of copying it if necessary). This adds the code to do that.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Joachim Fenkes [Thu, 22 Mar 2007 16:00:46 +0000 (17:00 +0100)]
[POWERPC] ibmebus: change probe/remove interface from using loc-code to DT path
In some cases, multiple OFDT nodes might share the same location code, so
the location code is not a unique identifier for an OFDT node. Changed the
ibmebus probe/remove interface to use the DT path of the device node instead
of the location code.
The DT path must be written into probe/remove right as it would appear in
the "devspec" attribute of the ebus device: relative to the DT root, with a
leading slash and without a trailing slash. One trailing newline will not
hurt; multiple newlines will (like perl's chomp()).
Example:
Add a device "/proc/device-tree/foo@
12345678" to ibmebus like this:
echo /foo@
12345678 > /sys/bus/ibmebus/probe
Remove the device like this:
echo /foo@
12345678 > /sys/bus/ibmebus/remove
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Thu, 12 Apr 2007 05:30:23 +0000 (15:30 +1000)]
[POWERPC] DEBUG_PAGEALLOC for 64-bit
Here's an implementation of DEBUG_PAGEALLOC for 64 bits powerpc.
It applies on top of the 32 bits patch.
Unlike Anton's previous attempt, I'm not using updatepp. I'm removing
the hash entries from the bolted mapping (using a map in RAM of all the
slots). Expensive but it doesn't really matter, does it ? :-)
Memory hot-added doesn't benefit from this unless it's added at an
address that is below end_of_DRAM() as calculated at boot time.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/Kconfig.debug | 2
arch/powerpc/mm/hash_utils_64.c | 84 ++++++++++++++++++++++++++++++++++++++--
2 files changed, 82 insertions(+), 4 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Thu, 12 Apr 2007 05:30:22 +0000 (15:30 +1000)]
[POWERPC] DEBUG_PAGEALLOC for 32-bit
Here's an implementation of DEBUG_PAGEALLOC for ppc32. It disables BAT
mapping and is only tested with Hash table based processor though it
shouldn't be too hard to adapt it to others.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/Kconfig.debug | 9 ++++++
arch/powerpc/mm/init_32.c | 4 +++
arch/powerpc/mm/pgtable_32.c | 52 +++++++++++++++++++++++++++++++++++++++
arch/powerpc/mm/ppc_mmu_32.c | 4 ++-
include/asm-powerpc/cacheflush.h | 6 ++++
5 files changed, 74 insertions(+), 1 deletion(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Thu, 12 Apr 2007 05:30:22 +0000 (15:30 +1000)]
[POWERPC] Fix 32-bit mm operations when not using BATs
On hash table based 32 bits powerpc's, the hash management code runs with
a big spinlock. It's thus important that it never causes itself a hash
fault. That code is generally safe (it does memory accesses in real mode
among other things) with the exception of the actual access to the code
itself. That is, the kernel text needs to be accessible without taking
a hash miss exceptions.
This is currently guaranteed by having a BAT register mapping part of the
linear mapping permanently, which includes the kernel text. But this is
not true if using the "nobats" kernel command line option (which can be
useful for debugging) and will not be true when using DEBUG_PAGEALLOC
implemented in a subsequent patch.
This patch fixes this by pre-faulting in the hash table pages that hit
the kernel text, and making sure we never evict such a page under hash
pressure.
Signed-off-by: Benjamin Herrenchmidt <benh@kernel.crashing.org>
arch/powerpc/mm/hash_low_32.S | 22 ++++++++++++++++++++--
arch/powerpc/mm/mem.c | 3 ---
arch/powerpc/mm/mmu_decl.h | 4 ++++
arch/powerpc/mm/pgtable_32.c | 11 +++++++----
4 files changed, 31 insertions(+), 9 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Thu, 12 Apr 2007 05:30:21 +0000 (15:30 +1000)]
[POWERPC] Cleanup 32-bit map_page
The 32 bits map_page() function is used internally by the mm code
for early mmu mappings and for ioremap. It should never be called
for an address that already has a valid PTE or hash entry, so we
add a BUG_ON for that and remove the useless flush_HPTE call.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/mm/pgtable_32.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Tue, 10 Apr 2007 07:09:37 +0000 (17:09 +1000)]
[POWERPC] Make tlb flush batch use lazy MMU mode
The current tlb flush code on powerpc 64 bits has a subtle race since we
lost the page table lock due to the possible faulting in of new PTEs
after a previous one has been removed but before the corresponding hash
entry has been evicted, which can leads to all sort of fatal problems.
This patch reworks the batch code completely. It doesn't use the mmu_gather
stuff anymore. Instead, we use the lazy mmu hooks that were added by the
paravirt code. They have the nice property that the enter/leave lazy mmu
mode pair is always fully contained by the PTE lock for a given range
of PTEs. Thus we can guarantee that all batches are flushed on a given
CPU before it drops that lock.
We also generalize batching for any PTE update that require a flush.
Batching is now enabled on a CPU by arch_enter_lazy_mmu_mode() and
disabled by arch_leave_lazy_mmu_mode(). The code epects that this is
always contained within a PTE lock section so no preemption can happen
and no PTE insertion in that range from another CPU. When batching
is enabled on a CPU, every PTE updates that need a hash flush will
use the batch for that flush.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Wed, 11 Apr 2007 06:13:19 +0000 (16:13 +1000)]
[POWERPC] Alignment exception uses __get/put_user_inatomic
Make the alignment exception handler use the new _inatomic variants
of __get/put_user. This fixes erroneous warnings in the very rare
cases where we manage to have copy_tofrom_user_inatomic() trigger
an alignment exception.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/align.c | 56 ++++++++++++++++++++++++--------------------
1 file changed, 31 insertions(+), 25 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
Benjamin Herrenschmidt [Wed, 11 Apr 2007 06:13:19 +0000 (16:13 +1000)]
[POWERPC] Add inatomic versions of __get_user and __put_user
Those are needed by things like alignment exception fixup handlers
since those can now be triggered by copy_tofrom_user_inatomic.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Milind Arun Choudhary [Wed, 4 Apr 2007 16:37:40 +0000 (22:07 +0530)]
[POWERPC] Clean up unused ROUND_UP, NAME_OFFSET macros in arch/powerpc
Unused ROUND_UP, NAME_OFFSET macro cleanup
Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olaf Hering [Wed, 4 Apr 2007 16:20:04 +0000 (18:20 +0200)]
[POWERPC] Add correct interrupt property for pegasos ide
The firmware assigns irq 20/21 to the VIA IDE device on Pegasos.
But the required interrupt is 14/15.
Maybe someone confused decimal vs. hexadecimal values.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 12:50:59 +0000 (22:50 +1000)]
[POWERPC] Rename get_property to of_get_property: the last one
This also fixes a bug where a property value was being modified
in place.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 12:40:39 +0000 (22:40 +1000)]
[POWERPC] Rename get_property to of_get_property: drivers
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 12:39:14 +0000 (22:39 +1000)]
[POWERPC] Rename get_property to of_get_property: sound
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 12:26:41 +0000 (22:26 +1000)]
[POWERPC] Rename get_property to of_get_property: arch/powerpc
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 12:24:06 +0000 (22:24 +1000)]
[POWERPC] Rename get_property to of_get_property: include
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Paul Mackerras [Tue, 3 Apr 2007 11:24:02 +0000 (21:24 +1000)]
[POWERPC] Allow drivers to map individual 4k pages to userspace
Some drivers have resources that they want to be able to map into
userspace that are 4k in size. On a kernel configured with 64k pages
we currently end up mapping the 4k we want plus another 60k of
physical address space, which could contain anything. This can
introduce security problems, for example in the case of an infiniband
adaptor where the other 60k could contain registers that some other
program is using for its communications.
This patch adds a new function, remap_4k_pfn, which drivers can use to
map a single 4k page to userspace regardless of whether the kernel is
using a 4k or a 64k page size. Like remap_pfn_range, it would
typically be called in a driver's mmap function. It only maps a
single 4k page, which on a 64k page kernel appears replicated 16 times
throughout a 64k page. On a 4k page kernel it reduces to a call to
remap_pfn_range.
The way this works on a 64k kernel is that a new bit, _PAGE_4K_PFN,
gets set on the linux PTE. This alters the way that __hash_page_4K
computes the real address to put in the HPTE. The RPN field of the
linux PTE becomes the 4k RPN directly rather than being interpreted as
a 64k RPN. Since the RPN field is 32 bits, this means that physical
addresses being mapped with remap_4k_pfn have to be below 2^44,
i.e. 0x100000000000.
The patch also factors out the code in arch/powerpc/mm/hash_utils_64.c
that deals with demoting a process to use 4k pages into one function
that gets called in the various different places where we need to do
that. There were some discrepancies between exactly what was done in
the various places, such as a call to spu_flush_all_slbs in one case
but not in others.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:58:52 +0000 (10:58 +1000)]
[POWERPC] Make struct property's value a void *
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:57:48 +0000 (10:57 +1000)]
[POWERPC] Rename prom_n_size_cells to of_n_size_cells
This is more consistent and gets us closer to the Sparc code.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:56:50 +0000 (10:56 +1000)]
[POWERPC] Rename prom_n_addr_cells to of_n_addr_cells
This is more consistent and gets us closer to the Sparc code.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:55:39 +0000 (10:55 +1000)]
[POWERPC] Rename device_is_compatible to of_device_is_compatible
This is more consistent and gets us closer to the Sparc code.
We add a device_is_compatible define for compatibility during the
change over.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:54:01 +0000 (10:54 +1000)]
[POWERPC] Rename get_property to of_get_property
This is more consistent and gets us closer to the Sparc code.
We add a get_property define for compatibility during the change over.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Stephen Rothwell [Tue, 3 Apr 2007 00:52:17 +0000 (10:52 +1000)]
[POWERPC] get_property returns const
This just tidies up some of the remains.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olaf Hering [Mon, 2 Apr 2007 12:33:27 +0000 (14:33 +0200)]
[POWERPC] Fix modalias content in sysfs for macio devices
Currently the buf pointer is advanced too far during each iteration.
Also terminate the string with a newline.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olaf Hering [Sat, 31 Mar 2007 15:08:23 +0000 (17:08 +0200)]
[POWERPC] Autodetect serial console on efika
Efika boards have to be booted with console=ttyPSC0 unless there is a
graphics card plugged in. Detect if the firmware stdout is the serial
connector.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Milton Miller [Thu, 29 Mar 2007 13:31:41 +0000 (07:31 -0600)]
[POWERPC] bootwrapper: Decompress less, check more
Our kernels put everything in the first load segment, and we read that.
Instead of decompressing to the end of the gzip stream or supplied image
and hoping we get it all, decompress the expected size and complain if
it is not available.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Milton Miller [Wed, 28 Mar 2007 08:21:04 +0000 (02:21 -0600)]
[POWERPC] bootwrapper: no-gzip fixes
Commit
a9903811bf8d130a26004f9cb27b66513a267908 missed two uses of the
the .gz suffix in the wrapper script and didn't clean the additonal
possibly cached files.
Signed-off-by: Milton Miller <miltonm@bga.com>
Acked-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Milton Miller [Wed, 28 Mar 2007 08:21:02 +0000 (02:21 -0600)]
[POWERPC] bootwrapper: missing relocation in crt0.S
crt0.S had provisions to provide run address relocaton to got2 and
cache flush, but not on the bss clear or stack pointer load. Apply
the same fixup for them.
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Mark A. Greer [Tue, 27 Mar 2007 22:31:41 +0000 (15:31 -0700)]
[POWERPC] Routine to find the devtree node of a linux,phandle
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Mark A. Greer [Tue, 27 Mar 2007 22:29:50 +0000 (15:29 -0700)]
[POWERPC] Move bootwrapper ELF parsing routines to a file
The ELF parsing routines local to arch/powerpc/boot/main.c are useful
to other callers therefore move them to their own file.
Signed-off-by: Mark A. Greer <mgreer@mvista.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Giuliano Pochini [Tue, 27 Mar 2007 05:40:28 +0000 (21:40 -0800)]
[POWERPC] Fix breakage caused by
72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc
72486f1f8f0a2bc828b9d30cf4690cf2dd6807fc inverted the sense for enabling
hotplug CPU controls without reference to any other architecture other than
i386, ia64 and PowerPC. This left everyone else without hotplug CPU control.
Fix powerpc for this brain damage.
(akpm: patch adapted from rmk's ARM fix. Changelog stolen from rmk)
Signed-off-by: Giuliano Pochini <pochini@shiny.it>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Robert P. J. Day [Tue, 27 Mar 2007 05:40:27 +0000 (21:40 -0800)]
[POWERPC] Remove unused header file: arch/ppc/syslib/cpc710.h.
Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Bart Van Assche [Tue, 27 Mar 2007 05:40:29 +0000 (21:40 -0800)]
[POWERPC] Ocotea board: ntpd complains that the frequency error exceeds the tolerance
Lifted from http://bugzilla.kernel.org/show_bug.cgi?id=8182
Steps to reproduce:
- Boot an Ocotea board with the mainline 2.6.20.1 kernel.
- Create an /etc/ntp.conf file with at least one NTP server and iburst mode set.
- Issue the command "ntpd -g".
- Wait about two minutes.
- Verify ntpd's status via "ntpq -pn" and by looking in /var/log/ntp.
This fixes this problem by adjusting the expected clock frequency.
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Scott Wood [Mon, 26 Mar 2007 20:52:24 +0000 (15:52 -0500)]
[POWERPC] bootwrapper: Add dt_xlate_reg(), and use it to find serial registers.
dt_xlate_reg() uses the ranges properties of a node's parentage to find
the absolute physical address of the node's registers.
The ns16550 driver uses this when no virtual-reg property is found.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Christoph Hellwig [Fri, 23 Mar 2007 14:12:26 +0000 (15:12 +0100)]
[POWERPC] spufs: don't yield CPU in spu_yield
There is no reason to yield the CPU in spu_yield - if the backing
thread reenters spu_run it gets added to the end of the runqueue for
it's priority. So the yield is just a slowdown for the case where
we have higher priority contexts waiting.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Geert Uytterhoeven [Fri, 23 Mar 2007 13:06:43 +0000 (14:06 +0100)]
[POWERPC] CBE thermal support on PS3
I wanted to enable CBE_THERM on PS3. So I had to enable CBE_RAS first.
But the resulting kernel doesn't link, as cbe_regs.c isn't compiled for
non-PPC_CELL_NATIVE.
CBE_RAS should depend on PPC_CELL_NATIVE; this makes it so.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Sonny Rao [Fri, 23 Mar 2007 02:44:31 +0000 (22:44 -0400)]
[POWERPC] Remove stale comment from head_64.S
This is now inaccurate because we may not have entered prom_init() and
r3 is overwritten immediately anyway.
Signed-off-by: Sonny Rao <sonny@burdell.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olaf Hering [Fri, 23 Mar 2007 00:11:59 +0000 (01:11 +0100)]
[POWERPC] Remove unused inclusion of linux/ide.h
Remove unneeded inclusion of linux/ide.h
It does not compile with CONFIG_BLOCK=n.
Remove asm/ide.h from ksyms file, it gets included earlier via
linux/ide.h.
Compile tested with all defconfig files.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Tony Vroon [Thu, 22 Mar 2007 23:31:08 +0000 (23:31 +0000)]
[POWERPC] PMU LED whitelisting of PowerMac 7,2 and 7,3
This allows the PMU LED on both a PowerMac 7,2 (Dual G5 2.0GHz, June 2003)
and a PowerMac 7,3 (Dual G5 2.0GHz, June 2004) to be controlled.
The physical LED is never off, unlike an iBook/PowerBook LED.
It is rather dim ("off") or very bright ("on").
Signed-off-by: Tony Vroon <chainsaw@gentoo.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olaf Hering [Thu, 22 Mar 2007 22:14:07 +0000 (23:14 +0100)]
[POWERPC] Fix link errors when EEH is disabled
Fix link errors with CONFIG_EEH=n:
arch/powerpc/platforms/built-in.o: In function `.pcibios_fixup_new_pci_devices':
(.text+0x41c8): undefined reference to `.eeh_add_device_tree_late'
arch/powerpc/platforms/built-in.o: In function `.init_phb_dynamic':
(.text+0x4280): undefined reference to `.eeh_add_device_tree_early'
arch/powerpc/platforms/built-in.o: In function `.pcibios_remove_pci_devices':
(.text+0x42fc): undefined reference to `.eeh_remove_bus_device'
arch/powerpc/platforms/built-in.o: In function `.pcibios_add_pci_devices':
(.text+0x43c0): undefined reference to `.eeh_add_device_tree_early'
arch/powerpc/platforms/built-in.o: In function `.pSeries_final_fixup':
(.init.text+0xb4): undefined reference to `.pci_addr_cache_build'
make[1]: *** [.tmp_vmlinux1] Error 1
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Paul Mackerras <paulus@samba.org>
David Gibson [Thu, 22 Mar 2007 06:02:21 +0000 (17:02 +1100)]
[POWERPC] Clean up zImage handling of the command line
This cleans up how the zImage code manipulates the kernel
command line. Notable improvements from the old handling:
- Command line manipulation is consolidated into a new
prep_cmdline() function, rather than being scattered across start()
and some helper functions
- Less stack space use: we use just a single global command
line buffer, which can be initialized by an external tool as before,
we no longer need another command line sized buffer on the stack.
- Easier to support platforms whose firmware passes a
commandline, but not a device tree. Platform code can now point new
loader_info fields to the firmware's command line, rather than having
to do early manipulation of the /chosen bootargs property which may
then be rewritten again by the core.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
David Gibson [Thu, 22 Mar 2007 06:02:21 +0000 (17:02 +1100)]
[POWERPC] Add device tree utility functions to zImage
This patch adds a library of useful device tree manipulation functions
to the zImage library, for use by platform code. These functions are
based on the hooks already in dt_ops, so they're not dependent on a
particular device tree implementation. This patch also slightly
streamlines the code in main.c using these new functions.
This is a consolidation of my work in this area with Scott Wood's
patches to a very similar end.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Olof Johansson [Thu, 22 Mar 2007 14:34:13 +0000 (09:34 -0500)]
[POWERPC] Use mtocrf instruction in asm when CONFIG_POWER4_ONLY=y
mtocrf is a faster single-field mtcrf (move to condition register
fields) instruction available in POWER4 and later processors. It can
make quite a difference in performance on some implementations, so use
it for CONFIG_POWER4_ONLY builds.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Jake Moilanen [Thu, 29 Mar 2007 13:44:02 +0000 (08:44 -0500)]
[POWERPC] DMA 4GB boundary protection
There are many adapters which cannot handle DMAing across any 4 GB
boundary. For instance, the latest Emulex adapters.
This normally is not an issue as firmware gives dma-windows under
4gigs. However, some of the new System-P boxes have dma-windows above
4gigs, and this present a problem.
During initialization of the IOMMU tables, the last entry at each 4GB
boundary is marked as used. Thus no mappings can cross the boundary.
If a table ends at a 4GB boundary, the entry is not marked as used.
A boot option to remove this 4GB protection is given w/ protect4gb=off.
This exposes the potential issue for driver and hardware development
purposes.
Signed-off-by: Jake Moilanen <moilanen@austin.ibm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Sylvain Munaut [Mon, 12 Feb 2007 22:13:27 +0000 (23:13 +0100)]
[POWERPC] Add uevent handler for of_platform_bus
Adding this handler allow userspace to properly handle the module
autoloading. The generation of the uevent itself is now common to
all bus using of_device, so not much code here.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Sylvain Munaut [Mon, 12 Feb 2007 22:13:26 +0000 (23:13 +0100)]
[POWERPC] powermac: Use the new of_device common uevent handler
The generation of the uevent is now common to all bus using
of_device.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Sylvain Munaut [Mon, 12 Feb 2007 22:13:25 +0000 (23:13 +0100)]
[POWERPC] Add a unified uevent handler for bus based on of_device
This common uevent handler allow the several bus types based on
of_device to generate the uevent properly and avoiding
code duplication.
This handlers take a struct device as argument and can therefore
be used as the uevent call directly if no special treatment is
needed for the bus.
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Paul Mackerras [Thu, 12 Apr 2007 17:50:03 +0000 (03:50 +1000)]
Merge branch 'linux-2.6' into for-2.6.22
Linus Torvalds [Wed, 11 Apr 2007 22:44:45 +0000 (15:44 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] mpc52xx_pic: fix main interrupt masking
Linus Torvalds [Wed, 11 Apr 2007 22:40:45 +0000 (15:40 -0700)]
Merge branch 'upstream-linus' of /linux/kernel/git/jgarzik/netdev-2.6
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6:
myri10ge: update driver version to 1.3.0-1.233
myri10ge: more Intel chipsets providing aligned PCIe completions
myri10ge: fix management of the firmware 4KB boundary crossing restriction
cxgb3 - missing CPL hanler and register setting.
cxgb3 - MAC watchdog update
cxgb3 - avoid deadlock with mac watchdog
skge: fix wake on lan
sky2: phy workarounds for Yukon EC-U A1
sky2: turn on clocks when doing resume
sky2: turn carrier off when down
skge: turn carrier off when down
[PATCH] bcm43xx: Fix PPC machine checks and match loopback gain specs
[PATCH] bcm43xx: Fix 802.11b/g scan limits to match regulatory reqs
[PATCH] zd1211rw: Fix E2P_PHY_REG patching
[PATCH] zd1211rw: Reject AL2230S devices
Linus Torvalds [Wed, 11 Apr 2007 22:40:03 +0000 (15:40 -0700)]
Merge /pub/scm/linux/kernel/git/gregkh/usb-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6:
USB: Nikon D80 unusual device patch
EHCI: fix remote wakeup regression in 2.6.21-rc
Dmitry Torokhov [Wed, 11 Apr 2007 05:37:18 +0000 (01:37 -0400)]
[PATCH] PM: use kobject_name() to access kobject names
Noone should use kobj.name directly since it may contain garbage.
Objects with longer names have them stored in separately allocated
memory pointed to by kobj->k_name.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Emil Larsson [Fri, 30 Mar 2007 05:48:46 +0000 (22:48 -0700)]
USB: Nikon D80 unusual device patch
the Nikon D80 camera will not work without an UNUSUAL_DEV entry embodied
in the attached patch (made against 2.6.20.3). Hope you find it helpful,
or if not, pass it along to someone who does.
From: Emil Larsson <emil@swip.net>
Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Mon, 9 Apr 2007 15:52:31 +0000 (11:52 -0400)]
EHCI: fix remote wakeup regression in 2.6.21-rc
There is one significant difference between the behavior of root hubs
(as embodied in host controller hardware) and external hubs: When a
remote-wakeup signal is received, an external hub sends an interrupt
message at the _end_ of the resume sequence but a root hub generates
and interrupt at the _beginning_ of the resume sequence. The host
system must poll for the end of the sequence.
When ehci-hcd was converted to interrupt-driven operation instead of
using polling, the remaining need for this particular poll was
overlooked. This patch (as894) fixes the problem.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Domen Puncer [Tue, 10 Apr 2007 22:27:49 +0000 (00:27 +0200)]
[POWERPC] mpc52xx_pic: fix main interrupt masking
The bit setting was off by one.
Tested with RTC and GPIO_WKUP interrupts.
Signed-off-by: Domen Puncer <domen.puncer@telargo.com>
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Jeff Garzik [Wed, 11 Apr 2007 15:55:45 +0000 (11:55 -0400)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/linville/wireless-2.6 into upstream-fixes
Brice Goglin [Tue, 10 Apr 2007 19:22:19 +0000 (21:22 +0200)]
myri10ge: update driver version to 1.3.0-1.233
Update the myri10ge driver version number to 1.3.0-1.233.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Brice Goglin [Tue, 10 Apr 2007 19:21:39 +0000 (21:21 +0200)]
myri10ge: more Intel chipsets providing aligned PCIe completions
Add the Intel 5000 southbridge (aka Intel 6310/6311/6321ESB) PCIe ports
and the Intel E30x0 chipsets to the whitelist of aligned PCIe completion.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Brice Goglin [Tue, 10 Apr 2007 19:21:08 +0000 (21:21 +0200)]
myri10ge: fix management of the firmware 4KB boundary crossing restriction
Simpler way of dealing with the firmware 4KB boundary crossing
restriction for rx buffers. This fixes a variety of memory
corruption issues when using an "uncommon" MTU with a 16KB
page size.
Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Divy Le Ray [Tue, 10 Apr 2007 03:10:33 +0000 (20:10 -0700)]
cxgb3 - missing CPL hanler and register setting.
Remove specific CPL handler.
Add missing CPL handler.
Add missing register setting when the interface is brought up.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Divy Le Ray [Tue, 10 Apr 2007 03:10:27 +0000 (20:10 -0700)]
cxgb3 - MAC watchdog update
The MAC watchdog was failing if the peer interface was brought down.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Divy Le Ray [Tue, 10 Apr 2007 03:10:22 +0000 (20:10 -0700)]
cxgb3 - avoid deadlock with mac watchdog
Fix a deadlock when the interface s configured down and
the watchdog tack is sleeping on rtnl_lock.
Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Mon, 9 Apr 2007 22:32:45 +0000 (15:32 -0700)]
skge: fix wake on lan
Need to rework wake on lan code to setup properly and get activated
on shutdown (and suspend), not when ethtool is run.
This does not need to go to stable queue because wake on lan
was not even included in 2.6.20 (or earlier versions).
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Sat, 7 Apr 2007 23:02:28 +0000 (16:02 -0700)]
sky2: phy workarounds for Yukon EC-U A1
The workaround Yukon EC-U wasn't comparing with correct
version and wasn't doing correct setup. Without it, 88e8056
throws all sorts of errors.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Sat, 7 Apr 2007 23:02:27 +0000 (16:02 -0700)]
sky2: turn on clocks when doing resume
Some of these chips are disabled until clock is enabled.
This fixes:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=404107
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Sat, 7 Apr 2007 23:02:26 +0000 (16:02 -0700)]
sky2: turn carrier off when down
Driver needs to turn off carrier when down.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Sat, 7 Apr 2007 23:02:25 +0000 (16:02 -0700)]
skge: turn carrier off when down
Driver needs to turn off carrier when down, otherwise it can
confuse bonding and bridging and looks like carrier is on immediately
when it is brought back up.
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
David Howells [Tue, 10 Apr 2007 14:10:45 +0000 (15:10 +0100)]
[PATCH] FRV: Update the FRV arch MAINTAINER record to get a hit on "grep -i frv"
Update the FRV arch MAINTAINER record to get a hit on "grep -i frv". Whilst
FR-V is technically correct, it's normally thought of as FRV.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cliff Brake [Tue, 10 Apr 2007 03:50:50 +0000 (23:50 -0400)]
[PATCH] Input: ucb1400 - set up driver's name to show in sysfs
The UCB1400 is missing a name parameter in the device_driver struct.
This causes missing information in the /sys tree and seems to cause
other problems with the AC97 functionality. This was tested on a PXA270
system.
Signed-off-by: Cliff Brake <cbrake@bec-systems.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 11 Apr 2007 00:24:56 +0000 (17:24 -0700)]
Merge branch 'for-2.6.21' of /linux/kernel/git/davej/agpgart
* 'for-2.6.21' of master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
[AGPGART] intel_agp: fix G965 GTT size detect
Linus Torvalds [Wed, 11 Apr 2007 00:24:36 +0000 (17:24 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
ieee1394: change deprecation status of dv1394
Linus Torvalds [Wed, 11 Apr 2007 00:23:52 +0000 (17:23 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IPoIB/cm: Fix DMA direction typo
IB/iser: Don't defer connection failure notification to workqueue
Linus Torvalds [Wed, 11 Apr 2007 00:23:36 +0000 (17:23 -0700)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/jikos/hid
* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: Do not discard truncated input reports
Linus Torvalds [Wed, 11 Apr 2007 00:22:31 +0000 (17:22 -0700)]
Merge /pub/scm/linux/kernel/git/bart/ide-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/bart/ide-2.6:
ide: add "optical" to sysfs "media" attribute
ide: ugly messages trying to open CD drive with no media present
ide: correctly prevent IDE timer expiry function to run if request was already handled
Linus Torvalds [Wed, 11 Apr 2007 00:22:16 +0000 (17:22 -0700)]
Merge /pub/scm/linux/kernel/git/davem/net-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NETFILTER]: ipt_CLUSTERIP: fix oops in checkentry function
[TCP]: slow_start_after_idle should influence cwnd validation too
[SC92031]: Fix priv->lock context
[NET_SCHED]: cls_tcindex: fix compatibility breakage
Linus Torvalds [Wed, 11 Apr 2007 00:21:57 +0000 (17:21 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
[IA64] SGI Altix : fix pcibr_dmamap_ate32() bug
[IA64] Fix CPU freq displayed in /proc/cpuinfo
[IA64] Fix wrong assumption about irq and vector in msi_ia64.c
[IA64] BTE error timer fix
Danny Kukawka [Tue, 10 Apr 2007 20:39:14 +0000 (22:39 +0200)]
ide: add "optical" to sysfs "media" attribute
Add "optical" to sysfs "media" attribute as already in /proc
Signed-off-by: Danny Kukawka <dkukawka@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Stuart Hayes [Tue, 10 Apr 2007 20:38:43 +0000 (22:38 +0200)]
ide: ugly messages trying to open CD drive with no media present
I get the following error messages when trying to open a CD device
(specifically, the Teac CD-ROM CD-224E) that has no media present:
hda: packet command error: status=3D0x51 { DriveReady SeekComplete Error }
hda: packet command error: error=3D0x54 { AbortedCommand LastFailedSense=0x05 }
ide: failed opcode was: unknown
This happens when a "start stop unit" command (0x1b 0 0 0 3 0 0 0 0 0)
is sent to the drive to try to close the CD-ROM tray, but this drive
doesn't have that capability (it's a slim portable-type CD-ROM), so it
reports sense key 5 (illegal request) with asc/ascq 24/0. This is
exactly how SFF8090i says it should respond.
But ide-cd.c (in cdrom_decode_status() ) just sees sense key 5 and spews
out an error. It then goes on to request sense data, and
cdrom_log_sense() understands this error and doesn't log it.
The patch, for kernel 2.6.20.4, suppresses this error message.
Signed-off-by: Stuart Hayes <stuart_hayes@dell.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Suleiman Souhlal [Tue, 10 Apr 2007 20:38:37 +0000 (22:38 +0200)]
ide: correctly prevent IDE timer expiry function to run if request was already handled
It is possible for the timer expiry function to run even though the
request has already been handled: ide_timer_expiry() only checks that
the handler is not NULL, but it is possible that we have handled a
request (thus clearing the handler) and then started a new request
(thus starting the timer again, and setting a handler).
A simple way to exhibit this is to set the DMA timeout to 1 jiffy and
run dd: The kernel will panic after a few minutes because
ide_timer_expiry() tries to add a timer when it's already active.
To fix this, we simply add a request generation count that gets
incremented at every interrupt, and check in ide_timer_expiry() that
we have not already handled a new interrupt before running the expiry
function.
Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Jaroslav Kysela [Tue, 10 Apr 2007 20:26:48 +0000 (13:26 -0700)]
[NETFILTER]: ipt_CLUSTERIP: fix oops in checkentry function
The clusterip_config_find_get() already increases entries reference
counter, so there is no reason to do it twice in checkentry() callback.
This causes the config to be freed before it is removed from the list,
resulting in a crash when adding the next rule.
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Larry Finger [Sat, 7 Apr 2007 19:11:03 +0000 (14:11 -0500)]
[PATCH] bcm43xx: Fix PPC machine checks and match loopback gain specs
The specifications for loopback_gain calculation and for G PHY
initialization have been updated. This patch implements them and
fixes a machine check error that occurs for PPC architecture with a
phy->rev of 1.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Larry Finger [Sat, 7 Apr 2007 18:54:35 +0000 (13:54 -0500)]
[PATCH] bcm43xx: Fix 802.11b/g scan limits to match regulatory reqs
In 802.11b/g mode, bcm43xx actively scans channels 1-14 no matter what
locale has been set, either in the sprom or by the locale option. This
behaviorviolates regulatory rules everywhere in the world except
Japan. This patch changes the default range to the correct value if the
locale has been set, and to channels 1-13 if no locale has been set.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Daniel Drake [Tue, 3 Apr 2007 22:17:37 +0000 (23:17 +0100)]
[PATCH] zd1211rw: Fix E2P_PHY_REG patching
Due to conflicting/confusing defines in the vendor driver, we were
reading E2P_PHY_REG from the wrong location.
CR157 patching was slightly incorrect in that the vendor driver only
patches in an 8-bit value, whereas we were patching 24 bits.
Additionally, CR157 patching was happening on both zd1211 and zd1211b,
but this should only happen on zd1211.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Ulrich Kunitz <kune@deine-taler.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Michael S. Tsirkin [Tue, 10 Apr 2007 15:32:42 +0000 (18:32 +0300)]
IPoIB/cm: Fix DMA direction typo
Receive buffers need to be mapped with DMA_FROM_DEVICE. Incorrectly
mapping with DMA_TO_DEVICE causes a hard lock on ppc64 machines with
an IOMMU.
This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=431>
Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Daniel Drake [Sun, 11 Mar 2007 19:54:11 +0000 (19:54 +0000)]
[PATCH] zd1211rw: Reject AL2230S devices
zd1211rw currently detects AL2230S-based devices as AL2230, and hence
programs the RF incorrectly. Transmit silently fails on this
misconfiguration.
After this patch, AL2230S devices are rejected with an error message, to
avoid any confusion with an apparent driver bug.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Wang Zhenyu [Tue, 10 Apr 2007 01:42:48 +0000 (09:42 +0800)]
[AGPGART] intel_agp: fix G965 GTT size detect
On G965, I810_PGETBL_CTL is a mmio offset, but we wrongly take it
as pci config space offset in detecting GTT size. This one line patch
fixs this.
Signed-off-by: Wang Zhenyu <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
David S. Miller [Mon, 9 Apr 2007 20:23:14 +0000 (13:23 -0700)]
[TCP]: slow_start_after_idle should influence cwnd validation too
For the cases that slow_start_after_idle are meant to deal
with, it is almost a certainty that the congestion window
tests will think the connection is application limited and
we'll thus decrease the cwnd there too. This defeats the
whole point of setting slow_start_after_idle to zero.
So test it there too.
We do not cancel out the entire tcp_cwnd_validate() function
so that if the sysctl is changed we still have the validation
state maintained.
Signed-off-by: David S. Miller <davem@davemloft.net>
Herbert Xu [Mon, 9 Apr 2007 18:51:15 +0000 (11:51 -0700)]
[SC92031]: Fix priv->lock context
The spin_lock calls made in dev->open and dev->close must disable
BH since open/close are made in process context. Conversely, the
call in dev->hard_start_xmit does not need to disable BH since it
is already executing with BH disabled.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Patrick McHardy [Mon, 9 Apr 2007 18:42:25 +0000 (11:42 -0700)]
[NET_SCHED]: cls_tcindex: fix compatibility breakage
Userspace uses an integer for TCA_TCINDEX_SHIFT, the kernel was changed
to expect and use a u16 value in 2.6.11, which broke compatibility on
big endian machines. Change back to use int.
Reported by Ole Reinartz <ole.reinartz@gmx.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 9 Apr 2007 18:45:18 +0000 (11:45 -0700)]
Merge branch 'for-2.6.21' of /linux/kernel/git/davej/agpgart
* 'for-2.6.21' of master.kernel.org:/pub/scm/linux/kernel/git/davej/agpgart:
[AGPGART] intel_agp: PCI id update for Intel 965GM