A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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gpio: omap: Fix gpiochip_add() handling for deferred probe

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Currently we gpio-omap breaks if gpiochip_add() returns -EPROBE_DEFER:

[    0.570000] gpiochip_add: GPIOs 0..31 (gpio) failed to register
[    0.570000] omap_gpio 48310000.gpio: Could not register gpio chip -517
...
[    3.670000] omap_gpio 48310000.gpio: Unbalanced pm_runtime_enable!

Let's fix the issue by adding the missing pm_runtime_put() on error.

Cc: Grygorii Strashko <[email protected]>
Cc: Javier Martinez Canillas <[email protected]>
Cc: Kevin Hilman <[email protected]>
Cc: Santosh Shilimkar <[email protected]>
Acked-by: Santosh Shilimkar <[email protected]>
Signed-off-by: Tony Lindgren <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Tony Lindgren 2015-08-28 11:44:49 -07:00 • committed by Linus Walleij
commit 5e606abef5
1 changed files with 4 additions and 1 deletions
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5
drivers/gpio/gpio-omap.c
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@ -1253,8 +1253,11 @@ static int omap_gpio_probe(struct platform_device *pdev)
omap_gpio_mod_init(bank);
ret = omap_gpio_chip_init(bank, irqc);
if (ret)
if (ret) {
pm_runtime_put_sync(bank->dev);
pm_runtime_disable(bank->dev);
return ret;
}
omap_gpio_show_rev(bank);