media: camss: csiphy-3ph: avoid undefined behavior

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[ Upstream commit 05fb9ace34 ]

Marking a case of the switch statement as unreachable means the
compiler treats it as undefined behavior, which is then caught by
an objtool warning:

drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.o: warning: objtool: csiphy_lanes_enable() falls through to next function csiphy_lanes_disable()

Instead of simply continuing execution at a random place of the
driver, print a warning and return from to the caller, which
makes it possible to understand what happens and avoids the
warning.

Fixes: 53655d2a0f ("media: camss: csiphy-3ph: add support for SM8250 CSI DPHY")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Arnd Bergmann 2022-12-15 17:28:46 +01:00 • committed by Greg Kroah-Hartman

parent 76ae28181c

commit e057d12dae

1 changed files with 2 additions and 1 deletions

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drivers/media/platform/qcom/camss/camss-csiphy-3ph-1-0.c

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