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staging: dgnc: Check sscanf return value 

This fixes the following checkpatch.pl warnings:
WARNING: unchecked sscanf return value

Signed-off-by: Roberta Dobrescu <roberta.dobrescu@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Roberta Dobrescu 2014-09-20 00:01:39 +03:00 committed by Greg Kroah-Hartman
parent f23e875fd2
commit fb33aa47a0
1 changed files with 15 additions and 3 deletions
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18
drivers/staging/dgnc/dgnc_sysfs.c
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@ -70,7 +70,11 @@ static ssize_t dgnc_driver_debug_show(struct device_driver *ddp, char *buf)
static ssize_t dgnc_driver_debug_store(struct device_driver *ddp, const char *buf, size_t count)
{
sscanf(buf, "0x%x\n", &dgnc_debug);
int ret;
ret = sscanf(buf, "0x%x\n", &dgnc_debug);
if (ret != 1)
return -EINVAL;
return count;
}
static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgnc_driver_debug_show, dgnc_driver_debug_store);
@ -83,7 +87,11 @@ static ssize_t dgnc_driver_rawreadok_show(struct device_driver *ddp, char *buf)
static ssize_t dgnc_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
{
sscanf(buf, "0x%x\n", &dgnc_rawreadok);
int ret;
ret = sscanf(buf, "0x%x\n", &dgnc_rawreadok);
if (ret != 1)
return -EINVAL;
return count;
}
static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgnc_driver_rawreadok_show, dgnc_driver_rawreadok_store);
@ -96,7 +104,11 @@ static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf)
static ssize_t dgnc_driver_pollrate_store(struct device_driver *ddp, const char *buf, size_t count)
{
sscanf(buf, "%d\n", &dgnc_poll_tick);
int ret;
ret = sscanf(buf, "%d\n", &dgnc_poll_tick);
if (ret != 1)
return -EINVAL;
return count;
}
static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgnc_driver_pollrate_show, dgnc_driver_pollrate_store);