x86, intel-mid: Check get_gpio_by_name() error code on platform code

This patch does cleanup on all intel mid platform code that uses
gpio_get_by_name() function. From now on they should check for any error
code instead of only hardcoded -1.

There are no functional changes from this change.

Signed-off-by: David Cohen <david.a.cohen@linux.intel.com>
Link: http://lkml.kernel.org/r/1389913624-9149-3-git-send-email-david.a.cohen@linux.intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

7 files changed, 12 insertions, 8 deletions

diff --git a/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c b/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c
index 0d942c1d26d5..69a783689d21 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_emc1403.c
@@ -22,7 +22,9 @@ static void __init *emc1403_platform_data(void *info)
         int intr = get_gpio_by_name("thermal_int");
         int intr2nd = get_gpio_by_name("thermal_alert");
 
-        if (intr == -1 || intr2nd == -1)
+        if (intr < 0)
+                return NULL;
+        if (intr2nd < 0)
                 return NULL;
 
         i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c b/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c
index a013a4834bbe..dccae6b0413f 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_gpio_keys.c
@@ -66,7 +66,7 @@ static int __init pb_keys_init(void)
                 gb[i].gpio = get_gpio_by_name(gb[i].desc);
                 pr_debug("info[%2d]: name = %s, gpio = %d\n", i, gb[i].desc,
                                         gb[i].gpio);
-                if (gb[i].gpio == -1)
+                if (gb[i].gpio < 0)
                         continue;
 
                 if (i != good)
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_lis331.c b/arch/x86/platform/intel-mid/device_libs/platform_lis331.c
index 15278c11f714..54226de7541a 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_lis331.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_lis331.c
@@ -21,7 +21,9 @@ static void __init *lis331dl_platform_data(void *info)
         int intr = get_gpio_by_name("accel_int");
         int intr2nd = get_gpio_by_name("accel_2");
 
-        if (intr == -1 || intr2nd == -1)
+        if (intr < 0)
+                return NULL;
+        if (intr2nd < 0)
                 return NULL;
 
         i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_max7315.c b/arch/x86/platform/intel-mid/device_libs/platform_max7315.c
index 94ade10024ae..2c8acbc1e9ad 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_max7315.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_max7315.c
@@ -48,7 +48,7 @@ static void __init *max7315_platform_data(void *info)
         gpio_base = get_gpio_by_name(base_pin_name);
         intr = get_gpio_by_name(intr_pin_name);
 
-        if (gpio_base == -1)
+        if (gpio_base < 0)
                 return NULL;
         max7315->gpio_base = gpio_base;
         if (intr != -1) {
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c b/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c
index dd28d63c84fb..cfe9a47a1e87 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_mpu3050.c
@@ -19,7 +19,7 @@ static void *mpu3050_platform_data(void *info)
         struct i2c_board_info *i2c_info = info;
         int intr = get_gpio_by_name("mpu3050_int");
 
-        if (intr == -1)
+        if (intr < 0)
                 return NULL;
 
         i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c b/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c
index d87182a09263..65c2a9a19db4 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_pmic_gpio.c
@@ -26,7 +26,7 @@ static void __init *pmic_gpio_platform_data(void *info)
         static struct intel_pmic_gpio_platform_data pmic_gpio_pdata;
         int gpio_base = get_gpio_by_name("pmic_gpio_base");
 
-        if (gpio_base == -1)
+        if (gpio_base < 0)
                 gpio_base = 64;
         pmic_gpio_pdata.gpio_base = gpio_base;
         pmic_gpio_pdata.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET;
diff --git a/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c b/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c
index 22881c9a6737..33be0b3be6e1 100644
--- a/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c
+++ b/arch/x86/platform/intel-mid/device_libs/platform_tca6416.c
@@ -34,10 +34,10 @@ static void *tca6416_platform_data(void *info)
         gpio_base = get_gpio_by_name(base_pin_name);
         intr = get_gpio_by_name(intr_pin_name);
 
-        if (gpio_base == -1)
+        if (gpio_base < 0)
                 return NULL;
         tca6416.gpio_base = gpio_base;
-        if (intr != -1) {
+        if (intr >= 0) {
                 i2c_info->irq = intr + INTEL_MID_IRQ_OFFSET;
                 tca6416.irq_base = gpio_base + INTEL_MID_IRQ_OFFSET;
         } else {