diff options
Diffstat (limited to 'drivers/staging/dgnc')
| -rw-r--r-- | drivers/staging/dgnc/dgnc_sysfs.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/staging/dgnc/dgnc_sysfs.c b/drivers/staging/dgnc/dgnc_sysfs.c index 207fa25cb7da..0d425ada0001 100644 --- a/drivers/staging/dgnc/dgnc_sysfs.c +++ b/drivers/staging/dgnc/dgnc_sysfs.c @@ -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); |