[media] soc_camera: fix compiler warning

media_build/v4l/soc_camera.c: In function 'soc_camera_host_register':
media_build/v4l/soc_camera.c:1513:10: warning: 'sasd' may be used uninitialized in this function [-Wmaybe-uninitialized]
  snprintf(clk_name, sizeof(clk_name), "%d-%04x",
          ^
media_build/v4l/soc_camera.c:1464:34: note: 'sasd' was declared here
  struct soc_camera_async_subdev *sasd;
                                  ^
By changing the type of 'i' to unsigned and changing a condition we finally
convince the compiler that sasd is really initialized.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c
index 4b42572..dc1b26c 100644 (file)
--- a/drivers/media/platform/soc_camera/soc_camera.c
+++ b/drivers/media/platform/soc_camera/soc_camera.c
@@ -1466,7 +1466,8 @@ static int scan_async_group(struct soc_camera_host *ici,
        struct soc_camera_device *icd;
        struct soc_camera_desc sdesc = {.host_desc.bus_id = ici->nr,};
        char clk_name[V4L2_SUBDEV_NAME_SIZE];
-       int ret, i;
+       unsigned int i;
+       int ret;
 
        /* First look for a sensor */
        for (i = 0; i < size; i++) {
@@ -1475,7 +1476,7 @@ static int scan_async_group(struct soc_camera_host *ici,
                        break;
        }
 
-       if (i == size || asd[i]->match_type != V4L2_ASYNC_MATCH_I2C) {
+       if (i >= size || asd[i]->match_type != V4L2_ASYNC_MATCH_I2C) {
                /* All useless */
                dev_err(ici->v4l2_dev.dev, "No I2C data source found!\n");
                return -ENODEV;