[PATCH 6/7] scsi: aha1542: avoid uninitialized variable warnings

From: Arnd Bergmann
Date: Wed Jan 27 2016 - 10:59:49 EST

Gcc incorrectly detects that two variables in aha1542_queuecommand might
be used without an initialization:

scsi/aha1542.c: In function 'aha1542_queuecommand':
scsi/aha1542.c:382:16: error: 'cptr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
scsi/aha1542.c:379:11: error: 'sg_count' may be used uninitialized in this function [-Werror=maybe-uninitialized]

The only user of these is doing the same check that the assigment
has, so it is actually guaranteed to work. Adding an "else" clause
with a fake initialization shuts up the warning.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
drivers/scsi/aha1542.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/scsi/aha1542.c b/drivers/scsi/aha1542.c
index 5b8b2937a3fe..7db448ec8beb 100644
--- a/drivers/scsi/aha1542.c
+++ b/drivers/scsi/aha1542.c
@@ -403,6 +403,9 @@ static int aha1542_queuecommand(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
cptr = kmalloc(sizeof(*cptr) * sg_count, GFP_KERNEL | GFP_DMA);
if (!cptr)
+ } else {
+ sg_count = 0;
+ cptr = NULL;

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