media: staging: media: imx: initialize hs_settle to avoid warning

Initialize hs_settle to 0 to avoid this compiler warning:

imx8mq-mipi-csi2.c: In function 'imx8mq_mipi_csi_start_stream.part.0':
imx8mq-mipi-csi2.c:91:55: warning: 'hs_settle' may be used uninitialized [-Wmaybe-uninitialized]
   91 | #define GPR_CSI2_1_S_PRG_RXHS_SETTLE(x) (((x) & 0x3f) << 2)
      |                                                       ^~
imx8mq-mipi-csi2.c:357:13: note: 'hs_settle' was declared here
  357 |         u32 hs_settle;
      |             ^~~~~~~~~

It's a false positive, but it is too complicated for the compiler to detect that.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reviewed-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/staging/media/imx/imx8mq-mipi-csi2.c b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
index 32700cb8bc4d551055b8d6f36618acbe07088042..ca2efcc21efe3063df15e811d2cb9a317bd3b8c1 100644 (file)
--- a/drivers/staging/media/imx/imx8mq-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx8mq-mipi-csi2.c
@@ -354,7 +354,7 @@ static int imx8mq_mipi_csi_start_stream(struct csi_state *state,
                                        struct v4l2_subdev_state *sd_state)
 {
        int ret;
-       u32 hs_settle;
+       u32 hs_settle = 0;
 
        ret = imx8mq_mipi_csi_sw_reset(state);
        if (ret)