From: Santosh Nayak <santoshprasadnayak@gmail.com>
Date: Tue, 6 Mar 2012 17:06:59 +0000 (+0530)
Subject: [SCSI] bfa: Fix endian bug in bfad_iocmd_debug_fw_core().
X-Git-Tag: v3.12-rc1~3493^2~32
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=76c8ae4b2fbcbc92601c48e1b534c35638c8d597;p=kernel%2Fkernel-generic.git

[SCSI] bfa: Fix endian bug in bfad_iocmd_debug_fw_core().

Casting pointer from native data type to other type is
endian-sensitive.

"iocmd->offset"  is 64 bit but we use only first 32 bit.
It works in little-endian system but in big-endian system
it will break.

Signed-off-by: Santosh Nayak <santoshprasadnayak@gmail.com>
Acked-by: Jing Huang <huangj@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
---

diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c
index 8005c6c..f62cf49 100644
--- a/drivers/scsi/bfa/bfad_bsg.c
+++ b/drivers/scsi/bfa/bfad_bsg.c
@@ -1918,6 +1918,7 @@ bfad_iocmd_debug_fw_core(struct bfad_s *bfad, void *cmd,
 	struct bfa_bsg_debug_s *iocmd = (struct bfa_bsg_debug_s *)cmd;
 	void	*iocmd_bufptr;
 	unsigned long	flags;
+	u32 offset;
 
 	if (bfad_chk_iocmd_sz(payload_len, sizeof(struct bfa_bsg_debug_s),
 			BFA_DEBUG_FW_CORE_CHUNK_SZ) != BFA_STATUS_OK) {
@@ -1935,8 +1936,10 @@ bfad_iocmd_debug_fw_core(struct bfad_s *bfad, void *cmd,
 
 	iocmd_bufptr = (char *)iocmd + sizeof(struct bfa_bsg_debug_s);
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
+	offset = iocmd->offset;
 	iocmd->status = bfa_ioc_debug_fwcore(&bfad->bfa.ioc, iocmd_bufptr,
-				(u32 *)&iocmd->offset, &iocmd->bufsz);
+				&offset, &iocmd->bufsz);
+	iocmd->offset = offset;
 	spin_unlock_irqrestore(&bfad->bfad_lock, flags);
 out:
 	return 0;