[PATCH v5 05/18] drm/bridge: analogix_dp: Check all negative return values for &analogix_dp_device.irq

[Damon Ding <damon.ding@rock-chips.com>]

Currently only -ENXIO is checked for dp->irq from gpiod_to_irq(),
which ignores other possible error codes like -EPROBE_DEFER, -ENOENT.

Check for any negative value instead, and propagate the actual error
code rather than hardcoding -ENODEV.

Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://lore.kernel.org/all/20260804083307.84ECA1F000E9@smtp.kernel.org/
Tested-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>

---

Changes in v4:
- Add Tested-by tag.

Changes in v5:
- Change the type of &analogix_dp_device.irq from unsigned int to int
  to fix the dead dp->irq < 0 check, which broke the probe deferral
  for the HPD GPIO. (Sashiko)
---
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 ++--
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.h | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index a3871f28b835..c40ab7419f08 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -1519,9 +1519,9 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
 		irq_flags = IRQF_NO_AUTOEN;
 	}
 
-	if (dp->irq == -ENXIO) {
+	if (dp->irq < 0) {
 		dev_err(&pdev->dev, "failed to get irq\n");
-		return ERR_PTR(-ENODEV);
+		return ERR_PTR(dp->irq);
 	}
 
 	ret = devm_request_threaded_irq(&pdev->dev, dp->irq,
diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
index dc189f0b7a19..cc3466304531 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.h
@@ -159,7 +159,7 @@ struct analogix_dp_device {
 	struct drm_bridge	bridge;
 	struct drm_dp_aux	aux;
 	struct clk		*clock;
-	unsigned int		irq;
+	int			irq;
 	void __iomem		*reg_base;
 
 	struct video_info	video_info;
-- 
2.34.1