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pm80xx : Fix missing NULL pointer checks and memory leaks 

Checking return value for the memory allocattion and freeing it
while exiting the function

Signed-off-by: Viswas G <Viswas.G@pmcs.com>
Signed-off-by: Suresh Thiagarajan <Suresh.Thiagarajan@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Acked-by: Jack Wang <xjtuwjp@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Suresh Thiagarajan 2014-05-09 11:31:01 +05:30 committed by Christoph Hellwig
parent f259d9bdd2
commit b42939aa07
1 changed files with 3 additions and 0 deletions
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3
drivers/scsi/pm8001/pm8001_ctl.c
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@ -395,6 +395,8 @@ static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
payload.offset = 0;
payload.length = 4096;
payload.func_specific = kzalloc(4096, GFP_KERNEL);
if (!payload.func_specific)
return -ENOMEM;
PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
wait_for_completion(&completion);
virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr;
@ -402,6 +404,7 @@ static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
bios_index++)
str += sprintf(str, "%c",
*((u8 *)((u8 *)virt_addr+bios_index)));
kfree(payload.func_specific);
return str - buf;
}
static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);