linux-kernel - [PATCH 6/6] wifi: zd1211rw: use 'time_left' variable with wait_for_completion

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Date: Mon,  3 Jun 2024 11:15:39 +0200
From: Wolfram Sang <wsa+renesas@...g-engineering.com>
To: linux-kernel@...r.kernel.org
Cc: Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Kalle Valo <kvalo@...nel.org>,
	linux-wireless@...r.kernel.org
Subject: [PATCH 6/6] wifi: zd1211rw: 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/net/wireless/zydas/zd1211rw/zd_usb.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
index f3b567a13ded..2ee4218da1c5 100644
--- a/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
+++ b/drivers/net/wireless/zydas/zd1211rw/zd_usb.c
@@ -1698,7 +1698,7 @@ int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
 	int r, i, req_len, actual_req_len, try_count = 0;
 	struct usb_device *udev;
 	struct usb_req_read_regs *req = NULL;
-	unsigned long timeout;
+	unsigned long time_left;
 	bool retry = false;
 
 	if (count < 1) {
@@ -1748,9 +1748,9 @@ int zd_usb_ioread16v(struct zd_usb *usb, u16 *values,
 		goto error;
 	}
 
-	timeout = wait_for_completion_timeout(&usb->intr.read_regs.completion,
-					      msecs_to_jiffies(50));
-	if (!timeout) {
+	time_left = wait_for_completion_timeout(&usb->intr.read_regs.completion,
+						msecs_to_jiffies(50));
+	if (!time_left) {
 		disable_read_regs_int(usb);
 		dev_dbg_f(zd_usb_dev(usb), "read timed out\n");
 		r = -ETIMEDOUT;
-- 
2.43.0