Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (425 commits)
  V4L/DVB (11870): gspca - main: VIDIOC_ENUM_FRAMESIZES ioctl added.
  V4L/DVB (12004): poll method lose race condition
  V4L/DVB (11894): flexcop-pci: dmesg visible names broken
  V4L/DVB (11892): Siano: smsendian - declare function as extern
  V4L/DVB (11891): Siano: smscore - bind the GPIO SMS protocol
  V4L/DVB (11890): Siano: smscore - remove redundant code
  V4L/DVB (11889): Siano: smsdvb - add DVB v3 events
  V4L/DVB (11888): Siano: smsusb - remove redundant ifdef
  V4L/DVB (11887): Siano: smscards - add board (target) events
  V4L/DVB (11886): Siano: smscore - fix some new GPIO definitions names
  V4L/DVB (11885): Siano: Add new GPIO management interface
  V4L/DVB (11884): Siano: smssdio - revert to stand alone module
  V4L/DVB (11883): Siano: cards - add two additional (USB) devices
  V4L/DVB (11824): Siano: smsusb - change exit func debug msg
  V4L/DVB (11823): Siano: smsusb - fix typo in module description
  V4L/DVB (11822): Siano: smscore - bug fix at get_device_mode
  V4L/DVB (11821): Siano: smscore - fix isdb-t firmware name
  V4L/DVB (11820): Siano: smscore - fix byte ordering bug
  V4L/DVB (11819): Siano: smscore - fix get_common_buffer bug
  V4L/DVB (11818): Siano: smscards - assign gpio to HPG targets
  ...

1 files changed, 16 insertions, 7 deletions

diff --git a/arch/arm/mach-pxa/pcm990-baseboard.c b/arch/arm/mach-pxa/pcm990-baseboard.c
index 095521e9ee24..01791d74e08e 100644
--- a/arch/arm/mach-pxa/pcm990-baseboard.c
+++ b/arch/arm/mach-pxa/pcm990-baseboard.c
@@ -380,12 +380,12 @@ static struct pca953x_platform_data pca9536_data = {
         .gpio_base      = NR_BUILTIN_GPIO,
 };
 
-static int gpio_bus_switch;
+static int gpio_bus_switch = -EINVAL;
 
 static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
-                unsigned long flags)
+                                       unsigned long flags)
 {
-        if (gpio_bus_switch <= 0) {
+        if (gpio_bus_switch < 0) {
                 if (flags == SOCAM_DATAWIDTH_10)
                         return 0;
                 else
@@ -404,25 +404,34 @@ static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
 {
         int ret;
 
-        if (!gpio_bus_switch) {
+        if (gpio_bus_switch < 0) {
                 ret = gpio_request(NR_BUILTIN_GPIO, "camera");
                 if (!ret) {
                         gpio_bus_switch = NR_BUILTIN_GPIO;
                         gpio_direction_output(gpio_bus_switch, 0);
-                } else
-                        gpio_bus_switch = -EINVAL;
+                }
         }
 
-        if (gpio_bus_switch > 0)
+        if (gpio_bus_switch >= 0)
                 return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
         else
                 return SOCAM_DATAWIDTH_10;
 }
 
+static void pcm990_camera_free_bus(struct soc_camera_link *link)
+{
+        if (gpio_bus_switch < 0)
+                return;
+
+        gpio_free(gpio_bus_switch);
+        gpio_bus_switch = -EINVAL;
+}
+
 static struct soc_camera_link iclink = {
         .bus_id = 0, /* Must match with the camera ID above */
         .query_bus_param = pcm990_camera_query_bus_param,
         .set_bus_param = pcm990_camera_set_bus_param,
+        .free_bus = pcm990_camera_free_bus,
 };
 
 /* Board I2C devices. */