diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-08 22:07:57 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:25:19 +0200 |
| commit | e708e5db25085d42481dfc8da49cac67e3b103b2 (patch) | |
| tree | f6d92df7fc9d4af1f60c47ac72bdfe74fff1b614 /drivers/gpio | |
| parent | 2ea1c197bfbd166723c788f3e346265b3f8f27c0 (diff) | |
gpio: exar: add a check for the return value of ida_simple_get fails
commit 7ecced0934e574b528a1ba6c237731e682216a74 upstream.
ida_simple_get may fail and return a negative error number.
The fix checks its return value; if it fails, go to err_destroy.
Cc: <stable@vger.kernel.org>
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-exar.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-exar.c b/drivers/gpio/gpio-exar.c index 0ecd2369c2ca..a09d2f9ebacc 100644 --- a/drivers/gpio/gpio-exar.c +++ b/drivers/gpio/gpio-exar.c @@ -148,6 +148,8 @@ static int gpio_exar_probe(struct platform_device *pdev) mutex_init(&exar_gpio->lock); index = ida_simple_get(&ida_index, 0, 0, GFP_KERNEL); + if (index < 0) + goto err_destroy; sprintf(exar_gpio->name, "exar_gpio%d", index); exar_gpio->gpio_chip.label = exar_gpio->name; |