linux-kernel - [PATCH 8/8] media: ti: cal: use 'time_left' variable with wait_event

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Message-ID: <20240603092841.9500-9-wsa+renesas@sang-engineering.com>
Date: Mon,  3 Jun 2024 11:28:39 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: linux-kernel@...r.kernel.org
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Benoit Parrot <bparrot@...com>,
	Mauro Carvalho Chehab <mchehab@...nel.org>,
	linux-media@...r.kernel.org
Subject: [PATCH 8/8] media: ti: cal: use 'time_left' variable with wait_event_timeout()

There is a confusing pattern in the kernel to use a variable named 'timeout' to
store the result of wait_event_timeout() causing patterns like:

	timeout = wait_event_timeout(...)
	if (!timeout) return -ETIMEDOUT;

with all kinds of permutations. Use 'time_left' as a variable to make the code
self explaining.

Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
---
 drivers/media/platform/ti/cal/cal.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/media/platform/ti/cal/cal.c b/drivers/media/platform/ti/cal/cal.c
index 528909ae4bd6..5c2c04142aee 100644
--- a/drivers/media/platform/ti/cal/cal.c
+++ b/drivers/media/platform/ti/cal/cal.c
@@ -549,7 +549,7 @@ void cal_ctx_start(struct cal_ctx *ctx)
 void cal_ctx_stop(struct cal_ctx *ctx)
 {
 	struct cal_camerarx *phy = ctx->phy;
-	long timeout;
+	long time_left;
 
 	WARN_ON(phy->vc_enable_count[ctx->vc] == 0);
 
@@ -565,9 +565,9 @@ void cal_ctx_stop(struct cal_ctx *ctx)
 	ctx->dma.state = CAL_DMA_STOP_REQUESTED;
 	spin_unlock_irq(&ctx->dma.lock);
 
-	timeout = wait_event_timeout(ctx->dma.wait, cal_ctx_wr_dma_stopped(ctx),
-				     msecs_to_jiffies(500));
-	if (!timeout) {
+	time_left = wait_event_timeout(ctx->dma.wait, cal_ctx_wr_dma_stopped(ctx),
+				       msecs_to_jiffies(500));
+	if (!time_left) {
 		ctx_err(ctx, "failed to disable dma cleanly\n");
 		cal_ctx_wr_dma_disable(ctx);
 	}
-- 
2.43.0