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| author |   YueHaibing <yuehaibing@huawei.com> | 2020-11-02 22:30:24 +0800 |
|---|---|---|
| committer |   Sam Ravnborg <sam@ravnborg.org> | 2020-11-05 22:09:09 +0100 |
| commit | c2530cc9610d84a5a0118ba40d0f09309605047f (patch) | |
| tree | 82f88f573dd2b7825d8030e0dc669955e78aa02b /drivers/gpu/drm/bridge | |
| parent | drm/kmb: Build files for KeemBay Display driver (diff) | |
| download | linux-dev-c2530cc9610d84a5a0118ba40d0f09309605047f.tar.xz linux-dev-c2530cc9610d84a5a0118ba40d0f09309605047f.zip | |
drm/bridge: tpd12s015: Fix irq registering in tpd12s015_probe
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: cff5e6f7e83f ("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
Diffstat (limited to 'drivers/gpu/drm/bridge')
| -rw-r--r-- | drivers/gpu/drm/bridge/ti-tpd12s015.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/bridge/ti-tpd12s015.c b/drivers/gpu/drm/bridge/ti-tpd12s015.c index 514cbf0eac75..e0e015243a60 100644 --- a/drivers/gpu/drm/bridge/ti-tpd12s015.c +++ b/drivers/gpu/drm/bridge/ti-tpd12s015.c @@ -160,7 +160,7 @@ static int tpd12s015_probe(struct platform_device *pdev) /* Register the IRQ if the HPD GPIO is IRQ-capable. */ tpd->hpd_irq = gpiod_to_irq(tpd->hpd_gpio); - if (tpd->hpd_irq) { + if (tpd->hpd_irq >= 0) { ret = devm_request_threaded_irq(&pdev->dev, tpd->hpd_irq, NULL, tpd12s015_hpd_isr, IRQF_TRIGGER_RISING | |