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PCI/switchtec: Fix vep_vector_number ioread width
author
Logan Gunthorpe
<logang@deltatee.com>
Mon, 6 Jan 2020 19:03:27 +0000
(12:03 -0700)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Fri, 14 Feb 2020 21:34:09 +0000
(16:34 -0500)
commit
9375646b4cf03aee81bc6c305aa18cc80b682796
upstream.
vep_vector_number is actually a 16 bit register which should be read with
ioread16() instead of ioread32().
Fixes:
080b47def5e5
("MicroSemi Switchtec management interface driver")
Link:
https://lore.kernel.org/r/20200106190337.2428-3-logang@deltatee.com
Reported-by: Doug Meyer <dmeyer@gigaio.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/pci/switch/switchtec.c
patch
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diff --git
a/drivers/pci/switch/switchtec.c
b/drivers/pci/switch/switchtec.c
index
1bb3dcf
..
cc43c85
100644
(file)
--- a/
drivers/pci/switch/switchtec.c
+++ b/
drivers/pci/switch/switchtec.c
@@
-1276,7
+1276,7
@@
static int switchtec_init_isr(struct switchtec_dev *stdev)
if (nvecs < 0)
return nvecs;
- event_irq = ioread
32
(&stdev->mmio_part_cfg->vep_vector_number);
+ event_irq = ioread
16
(&stdev->mmio_part_cfg->vep_vector_number);
if (event_irq < 0 || event_irq >= nvecs)
return -EFAULT;