drm/bridge: tpd12s015: Fix irq registering in tpd12s015_probe

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[ Upstream commit c2530cc961 ]

gpiod_to_irq() return negative value in case of error,
the existing code doesn't handle negative error codes.
If the HPD gpio supports IRQs (gpiod_to_irq returns a
valid number), we use the IRQ. If it doesn't (gpiod_to_irq
returns an error), it gets polled via detect().

Fixes: cff5e6f7e8 ("drm/bridge: Add driver for the TI TPD12S015 HDMI level shifter")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201102143024.26216-1-yuehaibing@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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YueHaibing 2020-11-02 22:30:24 +08:00 • committed by Greg Kroah-Hartman

parent 332a2c3b6f

commit 6ed6e024e3

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/bridge/ti-tpd12s015.c

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