1 files changed, 9 insertions, 4 deletions

diff --git a/drivers/gpio/stmpe-gpio.c b/drivers/gpio/stmpe-gpio.c
index 4e1f1b9d5e67..7c9e6a052c45 100644
--- a/drivers/gpio/stmpe-gpio.c
+++ b/drivers/gpio/stmpe-gpio.c
@@ -30,6 +30,7 @@ struct stmpe_gpio {
         struct mutex irq_lock;
 
         int irq_base;
+        unsigned norequest_mask;
 
         /* Caches of interrupt control registers for bus_lock */
         u8 regs[CACHE_NR_REGS][CACHE_NR_BANKS];
@@ -103,6 +104,9 @@ static int stmpe_gpio_request(struct gpio_chip *chip, unsigned offset)
         struct stmpe_gpio *stmpe_gpio = to_stmpe_gpio(chip);
         struct stmpe *stmpe = stmpe_gpio->stmpe;
 
+        if (stmpe_gpio->norequest_mask & (1 << offset))
+                return -EINVAL;
+
         return stmpe_set_altfunc(stmpe, 1 << offset, STMPE_BLOCK_GPIO);
 }
 
@@ -287,8 +291,6 @@ static int __devinit stmpe_gpio_probe(struct platform_device *pdev)
         int irq;
 
         pdata = stmpe->pdata->gpio;
-        if (!pdata)
-                return -ENODEV;
 
         irq = platform_get_irq(pdev, 0);
         if (irq < 0)
@@ -302,6 +304,7 @@ static int __devinit stmpe_gpio_probe(struct platform_device *pdev)
 
         stmpe_gpio->dev = &pdev->dev;
         stmpe_gpio->stmpe = stmpe;
+        stmpe_gpio->norequest_mask = pdata ? pdata->norequest_mask : 0;
 
         stmpe_gpio->chip = template_chip;
         stmpe_gpio->chip.ngpio = stmpe->num_gpios;
@@ -312,11 +315,11 @@ static int __devinit stmpe_gpio_probe(struct platform_device *pdev)
 
         ret = stmpe_enable(stmpe, STMPE_BLOCK_GPIO);
         if (ret)
-                return ret;
+                goto out_free;
 
         ret = stmpe_gpio_irq_init(stmpe_gpio);
         if (ret)
-                goto out_free;
+                goto out_disable;
 
         ret = request_threaded_irq(irq, NULL, stmpe_gpio_irq, IRQF_ONESHOT,
                                    "stmpe-gpio", stmpe_gpio);
@@ -342,6 +345,8 @@ out_freeirq:
         free_irq(irq, stmpe_gpio);
 out_removeirq:
         stmpe_gpio_irq_remove(stmpe_gpio);
+out_disable:
+        stmpe_disable(stmpe, STMPE_BLOCK_GPIO);
 out_free:
         kfree(stmpe_gpio);
         return ret;