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[SCSI] hpsa: enable unit attention reporting

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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>
This commit is contained in:
Stephen M. Cameron 2013-12-04 17:10:21 -06:00 committed by James Bottomley
parent 97a5e98c1b
commit 28e1344647
2 changed files with 5 additions and 3 deletions
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7
drivers/scsi/hpsa.c
View file

@ -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

1
drivers/scsi/hpsa_cmd.h
View file

@ -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;