gpio: omap: Fix GPIO numbering for deferred probe

If gpio-omap probe fails with -EPROBE_DEFER, the GPIO numbering
keeps increasing. Only increase the gpio count if gpiochip_add()
was successful as otherwise the numbers will increase for each
probe attempt.

Cc: Javier Martinez Canillas <javier@dowhile0.org>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Santosh Shilimkar <ssantosh@kernel.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpio/gpio-omap.c b/drivers/gpio/gpio-omap.c
index 892a9d1192fd..072af5239bc1 100644
--- a/drivers/gpio/gpio-omap.c
+++ b/drivers/gpio/gpio-omap.c
@@ -1098,7 +1098,6 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
         } else {
                 bank->chip.label = "gpio";
                 bank->chip.base = gpio;
-                gpio += bank->width;
         }
         bank->chip.ngpio = bank->width;
 
@@ -1108,6 +1107,9 @@ static int omap_gpio_chip_init(struct gpio_bank *bank, struct irq_chip *irqc)
                 return ret;
         }
 
+        if (!bank->is_mpuio)
+                gpio += bank->width;
+
 #ifdef CONFIG_ARCH_OMAP1
         /*
          * REVISIT: Once we have OMAP1 supporting SPARSE_IRQ, we can drop