From 1b313b33fa279914ba462a45f80858ed8095f8f3 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Thu, 26 Jun 2014 15:44:52 +0200 Subject: [PATCH] hpsa: fix non-x86 builds commit 0b9e7b741f2bf8103b15bb14d5b4a6f5ee91c59a upstream. commit 28e134464734 "[SCSI] hpsa: enable unit attention reporting" turns on unit attention notifications, but got the change wrong for all architectures other than x86, which now store an uninitialized value into the device register. Gcc helpfully warns about this: ../drivers/scsi/hpsa.c: In function 'hpsa_set_driver_support_bits': ../drivers/scsi/hpsa.c:6373:17: warning: 'driver_support' is used uninitialized in this function [-Wuninitialized] driver_support |= ENABLE_UNIT_ATTN; ^ This moves the #ifdef so only the prefetch-enable is conditional on x86, not also reading the initial register contents. Signed-off-by: Arnd Bergmann Fixes: 28e134464734 "[SCSI] hpsa: enable unit attention reporting" Acked-by: Stephen M. Cameron Signed-off-by: Christoph Hellwig Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/hpsa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 868318a..091f345 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4367,9 +4367,9 @@ static inline void hpsa_set_driver_support_bits(struct ctlr_info *h) { 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)); + /* Need to enable prefetch in the SCSI core for 6400 in x86 */ +#ifdef CONFIG_X86 driver_support |= ENABLE_SCSI_PREFETCH; #endif driver_support |= ENABLE_UNIT_ATTN; -- 2.7.4