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| author | Arnd Bergmann <arnd@arndb.de> | 2018-01-18 16:16:38 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-26 12:02:10 +0300 |
| commit | 8afed2798e50f3f9b84a6b0c9eb9810119a0fc3f (patch) | |
| tree | 06f3e499a2b8a54607fc6a1b447ca4bb35677f95 | |
| parent | 800fda575b119312b429fe488680e990b32e2de6 (diff) | |
| download | linux-8afed2798e50f3f9b84a6b0c9eb9810119a0fc3f.tar.xz | |
scsi: fas216: fix sense buffer initialization
[ Upstream commit 96d5eaa9bb74d299508d811d865c2c41b38b0301 ]
While testing with the ARM specific memset() macro removed, I ran into a
compiler warning that shows an old bug:
drivers/scsi/arm/fas216.c: In function 'fas216_rq_sns_done':
drivers/scsi/arm/fas216.c:2014:40: error: argument to 'sizeof' in 'memset' call is the same expression as the destination; did you mean to provide an explicit length? [-Werror=sizeof-pointer-memaccess]
It turns out that the definition of the scsi_cmd structure changed back
in linux-2.6.25, so now we clear only four bytes (sizeof(pointer))
instead of 96 (SCSI_SENSE_BUFFERSIZE). I did not check whether we
actually need to initialize the buffer here, but it's clear that if we
do it, we should use the correct size.
Fixes: de25deb18016 ("[SCSI] use dynamically allocated sense buffer")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/scsi/arm/fas216.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/arm/fas216.c b/drivers/scsi/arm/fas216.c index 24388795ee9a..936e8c735656 100644 --- a/drivers/scsi/arm/fas216.c +++ b/drivers/scsi/arm/fas216.c @@ -2011,7 +2011,7 @@ static void fas216_rq_sns_done(FAS216_Info *info, struct scsi_cmnd *SCpnt, * have valid data in the sense buffer that could * confuse the higher levels. */ - memset(SCpnt->sense_buffer, 0, sizeof(SCpnt->sense_buffer)); + memset(SCpnt->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); //printk("scsi%d.%c: sense buffer: ", info->host->host_no, '0' + SCpnt->device->id); //{ int i; for (i = 0; i < 32; i++) printk("%02x ", SCpnt->sense_buffer[i]); printk("\n"); } /* |