drm/rockchip: vop: Add timeout for DSP hold

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If hardware is malfunctioning (e.g., misconfigured clocks?), we can get
stuck here forever, holding various DRM locks and eventually locking up
the entire system. It's better to complain loudly and move on, than to
lock up the system.

In local tests, this operation takes less than 20ms.

Signed-off-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20211008153102.1.I2a5dbaaada35023a9703a8db7af501528fbb6e31@changeid

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Brian Norris 2021-10-08 15:31:04 -07:00 • committed by Heiko Stuebner

parent 75ad021f21

commit 085af7d288

1 changed files with 3 additions and 1 deletions

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drivers/gpu/drm/rockchip/rockchip_drm_vop.c

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