[PATCH v2 2/3] drm/bridge: tc358767: Only print GPIO debug output if they actually occur

From: Alexander Stein
Date: Thu May 16 2024 - 02:25:41 EST


Currently the output the following output is printed upon each interrupt:
tc358767 1-000f: GPIO0:
This spams the kernel log while debugging an IRQ storm from the bridge.
Only print the debug output if the GPIO hotplug event actually happened.

Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/tc358767.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/bridge/tc358767.c b/drivers/gpu/drm/bridge/tc358767.c
index de62a7e2eafec..8874713bdd4a4 100644
--- a/drivers/gpu/drm/bridge/tc358767.c
+++ b/drivers/gpu/drm/bridge/tc358767.c
@@ -2146,11 +2146,11 @@ static irqreturn_t tc_irq_handler(int irq, void *arg)
bool h = val & INT_GPIO_H(tc->hpd_pin);
bool lc = val & INT_GPIO_LC(tc->hpd_pin);

- dev_dbg(tc->dev, "GPIO%d: %s %s\n", tc->hpd_pin,
- h ? "H" : "", lc ? "LC" : "");
-
- if (h || lc)
+ if (h || lc) {
+ dev_dbg(tc->dev, "GPIO%d: %s %s\n", tc->hpd_pin,
+ h ? "H" : "", lc ? "LC" : "");
drm_kms_helper_hotplug_event(tc->bridge.dev);
+ }
}

regmap_write(tc->regmap, INTSTS_G, val);
--
2.34.1