media: platform: exynos4-is: Add hardware sync wait to fimc_is_hw_change_mode()

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[ Upstream commit bd9f6ce7d5 ]

In fimc_is_hw_change_mode(), the function changes camera modes without
waiting for hardware completion, risking corrupted data or system hangs
if subsequent operations proceed before the hardware is ready.

Add fimc_is_hw_wait_intmsr0_intmsd0() after mode configuration, ensuring
hardware state synchronization and stable interrupt handling.

Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Wentao Liang 2025-04-22 10:13:45 +08:00 • committed by Greg Kroah-Hartman

parent 7a209e4b6b

commit bb97dfab76

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drivers/media/platform/exynos4-is/fimc-is-regs.c

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