From: Dan Carpenter Date: Fri, 13 Nov 2015 14:23:23 +0000 (+0300) Subject: mvsas: don't allow negative timeouts X-Git-Tag: firefly_0821_release~176^2~600^2^2~15 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=78b7b80cf0abd5ea31d229300b11e9c3a97324ae;p=firefly-linux-kernel-4.4.55.git mvsas: don't allow negative timeouts There is a static checker warning here because "val" is controlled by the user and we have a upper bound on it but allow negative numbers. "val" appears to be a timeout in usec so this bug probably means we have a longer timeout than we should. Let's fix this by changing "val" to unsigned. Signed-off-by: Dan Carpenter Reviewed-by: Jack Wang Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/mvsas/mv_init.c b/drivers/scsi/mvsas/mv_init.c index 1960d956c671..b39fe6473a21 100644 --- a/drivers/scsi/mvsas/mv_init.c +++ b/drivers/scsi/mvsas/mv_init.c @@ -759,7 +759,7 @@ mvs_store_interrupt_coalescing(struct device *cdev, struct device_attribute *attr, const char *buffer, size_t size) { - int val = 0; + unsigned int val = 0; struct mvs_info *mvi = NULL; struct Scsi_Host *shost = class_to_shost(cdev); struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); @@ -767,7 +767,7 @@ mvs_store_interrupt_coalescing(struct device *cdev, if (buffer == NULL) return size; - if (sscanf(buffer, "%d", &val) != 1) + if (sscanf(buffer, "%u", &val) != 1) return -EINVAL; if (val >= 0x10000) {