linux-kernel - [PATCH 1/2] mtd: nand: mxc_nand: use 'time_left' variable with wait_for_completion

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Message-ID: <20240604212919.5038-5-wsa+renesas@sang-engineering.com>
Date: Tue,  4 Jun 2024 23:29:20 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: linux-kernel@...r.kernel.org
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>,
	linux-mtd@...ts.infradead.org
Subject: [PATCH 1/2] mtd: nand: mxc_nand: use 'time_left' variable with wait_for_completion_timeout()

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

	timeout = wait_for_completion_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/mtd/nand/raw/mxc_nand.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/nand/raw/mxc_nand.c b/drivers/mtd/nand/raw/mxc_nand.c
index 9d50f41b3d5a..e22fbea970d1 100644
--- a/drivers/mtd/nand/raw/mxc_nand.c
+++ b/drivers/mtd/nand/raw/mxc_nand.c
@@ -457,14 +457,14 @@ static int wait_op_done(struct mxc_nand_host *host, int useirq)
 		return 0;
 
 	if (useirq) {
-		unsigned long timeout;
+		unsigned long time_left;
 
 		reinit_completion(&host->op_completion);
 
 		irq_control(host, 1);
 
-		timeout = wait_for_completion_timeout(&host->op_completion, HZ);
-		if (!timeout && !host->devtype_data->check_int(host)) {
+		time_left = wait_for_completion_timeout(&host->op_completion, HZ);
+		if (!time_left && !host->devtype_data->check_int(host)) {
 			dev_dbg(host->dev, "timeout waiting for irq\n");
 			ret = -ETIMEDOUT;
 		}
-- 
2.43.0