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media: platform: return early if the iface is not handled 

Clang static analysis reports this issue
ispcsiphy.c:63:14: warning: The left operand of '<<'
  is a garbage value
        reg |= mode << shift;
               ~~~~ ^
The iface switch-statement default case falls through
to ISP_INTERFACE_CCP2B_PHY1.  Which is later checked
to set the mode.  Since the default case is left out
of this check mode is never set.  Instead of falling
through and assuming a ISP_INTERFACE_CCP2B_PHY1
iface, return.

Signed-off-by: Tom Rix <trix@redhat.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
This commit is contained in:
Tom Rix 2022-03-19 15:34:56 +01:00 committed by Mauro Carvalho Chehab
parent 9fadab72a6
commit 6bf9691159
1 changed files with 2 additions and 1 deletions
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1
drivers/media/platform/ti/omap3isp/ispcsiphy.c
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@ -32,6 +32,7 @@ static void csiphy_routing_cfg_3630(struct isp_csiphy *phy,
switch (iface) { switch (iface) {
default: default:
/* Should not happen in practice, but let's keep the compiler happy. */ /* Should not happen in practice, but let's keep the compiler happy. */
return;
case ISP_INTERFACE_CCP2B_PHY1: case ISP_INTERFACE_CCP2B_PHY1:
reg &= ~OMAP3630_CONTROL_CAMERA_PHY_CTRL_CSI1_RX_SEL_PHY2; reg &= ~OMAP3630_CONTROL_CAMERA_PHY_CTRL_CSI1_RX_SEL_PHY2;
shift = OMAP3630_CONTROL_CAMERA_PHY_CTRL_CAMMODE_PHY1_SHIFT; shift = OMAP3630_CONTROL_CAMERA_PHY_CTRL_CAMMODE_PHY1_SHIFT;