diff options
| author | Javier Martinez Canillas <javier.martinez@collabora.co.uk> | 2014-04-06 16:58:14 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2014-04-28 12:35:08 -0700 |
| commit | 6ef7f385610a235c7041206da0f92f760b5d0e8d (patch) | |
| tree | 6a55811e7bf5dfb6e374a53ebb22d759e9b64aed /drivers/gpio | |
| parent | caebd9db7677166994570db69210cdaa3e30e1fb (diff) | |
| download | linux-6ef7f385610a235c7041206da0f92f760b5d0e8d.tar.bz2 | |
gpio: omap: check gpiochip_add() return value
The gpiochip_add() function can fail if the chip cannot
be registered so the return value has to be checked and
the error propagated in case it happens.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-omap.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c index 3ee9b8d26f71..e71788835319 100644 --- a/drivers/gpio/gpio-omap.c +++ b/drivers/gpio/gpio-omap.c @@ -1081,10 +1081,11 @@ omap_mpuio_alloc_gc(struct gpio_bank *bank, unsigned int irq_start, IRQ_NOREQUEST | IRQ_NOPROBE, 0); } -static void omap_gpio_chip_init(struct gpio_bank *bank) +static int omap_gpio_chip_init(struct gpio_bank *bank) { int j; static int gpio; + int ret; /* * REVISIT eventually switch from OMAP-specific gpio structs @@ -1110,7 +1111,11 @@ static void omap_gpio_chip_init(struct gpio_bank *bank) } bank->chip.ngpio = bank->width; - gpiochip_add(&bank->chip); + ret = gpiochip_add(&bank->chip); + if (ret) { + dev_err(bank->dev, "Could not register gpio chip\n", ret); + return ret; + } for (j = 0; j < bank->width; j++) { int irq = irq_create_mapping(bank->domain, j); @@ -1139,6 +1144,7 @@ static int omap_gpio_probe(struct platform_device *pdev) struct resource *res; struct gpio_bank *bank; int irq_base = 0; + int ret; match = of_match_device(of_match_ptr(omap_gpio_match), dev); @@ -1223,7 +1229,11 @@ static int omap_gpio_probe(struct platform_device *pdev) mpuio_init(bank); omap_gpio_mod_init(bank); - omap_gpio_chip_init(bank); + + ret = omap_gpio_chip_init(bank); + if (ret) + return ret; + omap_gpio_show_rev(bank); pm_runtime_put(bank->dev); |