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authorMarkus Elfring <elfring@users.sourceforge.net>2017-10-22 20:21:55 +0200
committerLinus Walleij <linus.walleij@linaro.org>2017-10-31 10:09:04 +0100
commit5ac9d2df5bdd7c4e58700ad42aa7c9356bbf154d (patch)
tree07d56fb208dc3fba6b1391c643f12501ee5291ed
parent5a24d4b601561da08a70c065d4630bd9fadb37e8 (diff)
gpio-adnp: Use common error handling code in adnp_gpio_dbg_show()
Add a jump target so that a bit of exception handling can be better reused at the end of this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
-rw-r--r--drivers/gpio/gpio-adnp.c29
1 files changed, 13 insertions, 16 deletions
diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c
index 89863ea25de1..7f475eef3faa 100644
--- a/drivers/gpio/gpio-adnp.c
+++ b/drivers/gpio/gpio-adnp.c
@@ -192,28 +192,20 @@ static void adnp_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
mutex_lock(&adnp->i2c_lock);
err = adnp_read(adnp, GPIO_DDR(adnp) + i, &ddr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_PLR(adnp) + i, &plr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_IER(adnp) + i, &ier);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
err = adnp_read(adnp, GPIO_ISR(adnp) + i, &isr);
- if (err < 0) {
- mutex_unlock(&adnp->i2c_lock);
- return;
- }
+ if (err < 0)
+ goto unlock;
mutex_unlock(&adnp->i2c_lock);
@@ -240,6 +232,11 @@ static void adnp_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
direction, level, interrupt, pending);
}
}
+
+ return;
+
+unlock:
+ mutex_unlock(&adnp->i2c_lock);
}
static int adnp_gpio_setup(struct adnp *adnp, unsigned int num_gpios)