[SCSI] hpsa: enable unit attention reporting

This used to be the default, but at some point the firmware guys
changed the default and I failed to notice.  Now to get unit
attention notifications, you must twiddle a bit indicating you
want them.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 25afeb4..b146caf 100644 (file)
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -4384,14 +4384,15 @@ static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
 
 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
 {
-#ifdef CONFIG_X86
-       /* Need to enable prefetch in the SCSI core for 6400 in x86 */
        u32 driver_support;
 
+#ifdef CONFIG_X86
+       /* Need to enable prefetch in the SCSI core for 6400 in x86 */
        driver_support = readl(&(h->cfgtable->driver_support));
        driver_support |= ENABLE_SCSI_PREFETCH;
-       writel(driver_support, &(h->cfgtable->driver_support));
 #endif
+       driver_support |= ENABLE_UNIT_ATTN;
+       writel(driver_support, &(h->cfgtable->driver_support));
 }
 
 /* Disable DMA prefetch for the P600.  Otherwise an ASIC bug may result

diff --git a/drivers/scsi/hpsa_cmd.h b/drivers/scsi/hpsa_cmd.h
index 5158709..bfc8c4e 100644 (file)
--- a/drivers/scsi/hpsa_cmd.h
+++ b/drivers/scsi/hpsa_cmd.h
@@ -358,6 +358,7 @@ struct CfgTable {
        u32           HeartBeat;
        u32           driver_support;
 #define                        ENABLE_SCSI_PREFETCH 0x100
+#define                        ENABLE_UNIT_ATTN 0x01
        u32             MaxScatterGatherElements;
        u32             MaxLogicalUnits;
        u32             MaxPhysicalDevices;