linux-kernel - [PATCH] drm/bridge: anx7625: Simplify INTERFACE_CHANGE

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Message-ID: <20250325081331.1965917-1-fshao@chromium.org>
Date: Tue, 25 Mar 2025 13:54:43 +0800
From: Fei Shao <fshao@...omium.org>
To: Neil Armstrong <neil.armstrong@...aro.org>,
	Robert Foss <rfoss@...nel.org>
Cc: Xin Ji <xji@...logixsemi.com>,
	Fei Shao <fshao@...omium.org>,
	dri-devel@...ts.freedesktop.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] drm/bridge: anx7625: Simplify INTERFACE_CHANGE_INT reg clear write

Simply clear the INTERFACE_CHANGE_INT register with 0 and replace the
indirect `x & (~x)` pattern, since they are logically the same.
No functional change.

Signed-off-by: Fei Shao <fshao@...omium.org>
---

 drivers/gpu/drm/bridge/analogix/anx7625.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
index 0b97b66de577..df2d1dd95d01 100644
--- a/drivers/gpu/drm/bridge/analogix/anx7625.c
+++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
@@ -1586,8 +1586,7 @@ static int anx7625_hpd_change_detect(struct anx7625_data *ctx)
 	}
 	DRM_DEV_DEBUG_DRIVER(dev, "0x7e:0x44=%x\n", intr_vector);
 	status = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
-				   INTERFACE_CHANGE_INT,
-				   intr_vector & (~intr_vector));
+				   INTERFACE_CHANGE_INT, 0);
 	if (status < 0) {
 		DRM_DEV_ERROR(dev, "cannot clear interrupt change reg.\n");
 		return status;
-- 
2.49.0.395.g12beb8f557-goog