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| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-08 22:07:57 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-03 06:26:27 +0200 |
| commit | b26f7e86d3cc0e8744cf198118e313911f20f1f6 (patch) | |
| tree | 1e1144535ceb1873fcd3ae91c740716b8584ca26 | |
| parent | df74e70ffec6757f9ea75e7d1ea35de29c7d8b1a (diff) | |
| download | linux-stable-b26f7e86d3cc0e8744cf198118e313911f20f1f6.tar.gz linux-stable-b26f7e86d3cc0e8744cf198118e313911f20f1f6.tar.bz2 linux-stable-b26f7e86d3cc0e8744cf198118e313911f20f1f6.zip | |
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>
| -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; |