V4L/DVB (7217): Replace NO_GPIO with gpio_is_valid()

Upon suggestion by David Brownell use a gpio_is_valid() predicate
instead of an explicit NO_GPIO macro. The respective patch to
include/asm-generic/gpio.h has been accepted upstream.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

2 files changed, 10 insertions, 10 deletions

diff --git a/drivers/media/video/mt9m001.c b/drivers/media/video/mt9m001.c
index 3c5867c378d3..b65ff7745b8d 100644
--- a/drivers/media/video/mt9m001.c
+++ b/drivers/media/video/mt9m001.c
@@ -154,7 +154,7 @@ static int bus_switch_request(struct mt9m001 *mt9m001,
         int ret;
         unsigned int gpio = icl->gpio;
 
-        if (gpio != NO_GPIO) {
+        if (gpio_is_valid(gpio)) {
                 /* We have a data bus switch. */
                 ret = gpio_request(gpio, "mt9m001");
                 if (ret < 0) {
@@ -174,7 +174,7 @@ static int bus_switch_request(struct mt9m001 *mt9m001,
 
         mt9m001->switch_gpio = gpio;
 #else
-        mt9m001->switch_gpio = NO_GPIO;
+        mt9m001->switch_gpio = -EINVAL;
 #endif
         return 0;
 }
@@ -182,7 +182,7 @@ static int bus_switch_request(struct mt9m001 *mt9m001,
 static void bus_switch_release(struct mt9m001 *mt9m001)
 {
 #ifdef CONFIG_MT9M001_PCA9536_SWITCH
-        if (mt9m001->switch_gpio != NO_GPIO)
+        if (gpio_is_valid(mt9m001->switch_gpio))
                 gpio_free(mt9m001->switch_gpio);
 #endif
 }
@@ -190,7 +190,7 @@ static void bus_switch_release(struct mt9m001 *mt9m001)
 static int bus_switch_act(struct mt9m001 *mt9m001, int go8bit)
 {
 #ifdef CONFIG_MT9M001_PCA9536_SWITCH
-        if (mt9m001->switch_gpio == NO_GPIO)
+        if (!gpio_is_valid(mt9m001->switch_gpio))
                 return -ENODEV;
 
         gpio_set_value_cansleep(mt9m001->switch_gpio, go8bit);
@@ -224,7 +224,7 @@ static int mt9m001_set_capture_format(struct soc_camera_device *icd,
             (mt9m001->datawidth != 9  && (width_flag == IS_DATAWIDTH_9)) ||
             (mt9m001->datawidth != 8  && (width_flag == IS_DATAWIDTH_8))) {
                 /* data width switch requested */
-                if (mt9m001->switch_gpio == NO_GPIO)
+                if (!gpio_is_valid(mt9m001->switch_gpio))
                         return -EINVAL;
 
                 /* Well, we actually only can do 10 or 8 bits... */
diff --git a/drivers/media/video/mt9v022.c b/drivers/media/video/mt9v022.c
index 9b406e41902a..5fbeaa305f35 100644
--- a/drivers/media/video/mt9v022.c
+++ b/drivers/media/video/mt9v022.c
@@ -187,7 +187,7 @@ static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *i
         int ret;
         unsigned int gpio = icl->gpio;
 
-        if (gpio != NO_GPIO) {
+        if (gpio_is_valid(gpio)) {
                 /* We have a data bus switch. */
                 ret = gpio_request(gpio, "mt9v022");
                 if (ret < 0) {
@@ -206,7 +206,7 @@ static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *i
 
         mt9v022->switch_gpio = gpio;
 #else
-        mt9v022->switch_gpio = NO_GPIO;
+        mt9v022->switch_gpio = -EINVAL;
 #endif
         return 0;
 }
@@ -214,7 +214,7 @@ static int bus_switch_request(struct mt9v022 *mt9v022, struct soc_camera_link *i
 static void bus_switch_release(struct mt9v022 *mt9v022)
 {
 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
-        if (mt9v022->switch_gpio != NO_GPIO)
+        if (gpio_is_valid(mt9v022->switch_gpio))
                 gpio_free(mt9v022->switch_gpio);
 #endif
 }
@@ -222,7 +222,7 @@ static void bus_switch_release(struct mt9v022 *mt9v022)
 static int bus_switch_act(struct mt9v022 *mt9v022, int go8bit)
 {
 #ifdef CONFIG_MT9V022_PCA9536_SWITCH
-        if (mt9v022->switch_gpio == NO_GPIO)
+        if (!gpio_is_valid(mt9v022->switch_gpio))
                 return -ENODEV;
 
         gpio_set_value_cansleep(mt9v022->switch_gpio, go8bit);
@@ -303,7 +303,7 @@ static int mt9v022_set_capture_format(struct soc_camera_device *icd,
             (mt9v022->datawidth != 9  && (width_flag == IS_DATAWIDTH_9)) ||
             (mt9v022->datawidth != 8  && (width_flag == IS_DATAWIDTH_8))) {
                 /* data width switch requested */
-                if (mt9v022->switch_gpio == NO_GPIO)
+                if (!gpio_is_valid(mt9v022->switch_gpio))
                         return -EINVAL;
 
                 /* Well, we actually only can do 10 or 8 bits... */