forked from luck/tmp_suning_uos_patched
gpio: exar: add a check for the return value of ida_simple_get fails
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>
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@ -148,6 +148,8 @@ static int gpio_exar_probe(struct platform_device *pdev)
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mutex_init(&exar_gpio->lock);
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index = ida_simple_get(&ida_index, 0, 0, GFP_KERNEL);
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if (index < 0)
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goto err_destroy;
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sprintf(exar_gpio->name, "exar_gpio%d", index);
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exar_gpio->gpio_chip.label = exar_gpio->name;
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