if output->wm_num is bigger than 1, the value for reg is
not initialized, as warned by smatch:
drivers/media/platform/qcom/camss-8x16/camss-vfe.c:633 vfe_set_xbar_cfg() error: uninitialized symbol 'reg'.
drivers/media/platform/qcom/camss-8x16/camss-vfe.c:637 vfe_set_xbar_cfg() error: uninitialized symbol 'reg'.
I didn't check the logic into its details, but there is at least
one point where wm_num is made equal to two. So, something
seem broken.
For now, I just reset it to zero, and added a FIXME. Hopefully,
the driver authors will know if this is OK, or if something else
is needed there.
Signed-off-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxxx>
---
drivers/media/platform/qcom/camss-8x16/camss-vfe.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
index b22d2dfcd3c2..388431f747fa 100644
--- a/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
+++ b/drivers/media/platform/qcom/camss-8x16/camss-vfe.c
@@ -622,6 +622,8 @@ static void vfe_set_xbar_cfg(struct vfe_device *vfe, struct vfe_output *output,
reg = VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_EN;
if (p == V4L2_PIX_FMT_NV12 || p == V4L2_PIX_FMT_NV16)
reg |= VFE_0_BUS_XBAR_CFG_x_M_PAIR_STREAM_SWAP_INTER_INTRA;
+ } else {
+ reg = 0; /* FIXME: is it the right value for i > 1? */
}
if (output->wm_idx[i] % 2 == 1)
--
2.13.6
