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[1/8] spi: armada-3700: use 'time_left' variable with wait_for_completion_timeout()

Message ID 20240429112843.67628-2-wsa+renesas@sang-engineering.com (mailing list archive)
State Superseded
Headers show
Series spi: use 'time_left' instead of 'timeout' with wait_for_*() functions | expand

Commit Message

Wolfram Sang April 29, 2024, 11:28 a.m. UTC 
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.

Fix to the proper variable type 'unsigned long' while here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
 drivers/spi/spi-armada-3700.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Comments

Mark Brown April 29, 2024, 3:15 p.m. UTC | #1 
On Mon, Apr 29, 2024 at 01:28:34PM +0200, Wolfram Sang wrote:
> 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:

Please remember to send cover letters to your patch serieses to relevent
maintainers...
diff mbox series

Patch

diff --git a/drivers/spi/spi-armada-3700.c b/drivers/spi/spi-armada-3700.c
index 3c9ed412932f..02c1e625742d 100644
--- a/drivers/spi/spi-armada-3700.c
+++ b/drivers/spi/spi-armada-3700.c
@@ -339,7 +339,7 @@  static irqreturn_t a3700_spi_interrupt(int irq, void *dev_id)
 static bool a3700_spi_wait_completion(struct spi_device *spi)
 {
 	struct a3700_spi *a3700_spi;
-	unsigned int timeout;
+	unsigned long time_left;
 	unsigned int ctrl_reg;
 	unsigned long timeout_jiffies;
 
@@ -361,12 +361,12 @@  static bool a3700_spi_wait_completion(struct spi_device *spi)
 		     a3700_spi->wait_mask);
 
 	timeout_jiffies = msecs_to_jiffies(A3700_SPI_TIMEOUT);
-	timeout = wait_for_completion_timeout(&a3700_spi->done,
-					      timeout_jiffies);
+	time_left = wait_for_completion_timeout(&a3700_spi->done,
+						timeout_jiffies);
 
 	a3700_spi->wait_mask = 0;
 
-	if (timeout)
+	if (time_left)
 		return true;
 
 	/* there might be the case that right after we checked the