diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2017-07-18 12:30:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-28 17:08:16 -0700 |
| commit | 0d0d4d21a09981e65b2bd386c999e8c0ecc6444e (patch) | |
| tree | dc459922ebe8cd9bfa55c9bec874453806baa462 /drivers/staging/fbtft | |
| parent | c2d79b4b6dcf7b92003b129a3df90f89e878c8c4 (diff) | |
staging: fbtft: array underflow in fbtft_request_gpios_match()
"val" can be negative, so we'd write before the start of the
par->gpio.db[] array.
Fixes: c296d5f9957c ("staging: fbtft: core support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/fbtft')
| -rw-r--r-- | drivers/staging/fbtft/fbtft-core.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index b742ee786615..6d0363deba61 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -84,7 +84,7 @@ static unsigned long fbtft_request_gpios_match(struct fbtft_par *par, const struct fbtft_gpio *gpio) { int ret; - long val; + unsigned int val; fbtft_par_dbg(DEBUG_REQUEST_GPIOS_MATCH, par, "%s('%s')\n", __func__, gpio->name); @@ -108,7 +108,7 @@ static unsigned long fbtft_request_gpios_match(struct fbtft_par *par, par->gpio.latch = gpio->gpio; return GPIOF_OUT_INIT_LOW; } else if (gpio->name[0] == 'd' && gpio->name[1] == 'b') { - ret = kstrtol(&gpio->name[2], 10, &val); + ret = kstrtouint(&gpio->name[2], 10, &val); if (ret == 0 && val < 16) { par->gpio.db[val] = gpio->gpio; return GPIOF_OUT_INIT_LOW; |