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spi: sun4i: use 'time_left' variable with wait_for_completion_timeout()

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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>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20240430114142.28551-7-wsa+renesas@sang-engineering.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Wolfram Sang 2024-04-30 13:41:38 +02:00 committed by Mark Brown
parent e66480aed4
commit 34bed8a33f
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GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 4 deletions
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7
drivers/spi/spi-sun4i.c
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@ -206,7 +206,8 @@ static int sun4i_spi_transfer_one(struct spi_controller *host,
struct spi_transfer *tfr)
{
struct sun4i_spi *sspi = spi_controller_get_devdata(host);
unsigned int mclk_rate, div, timeout;
unsigned int mclk_rate, div;
unsigned long time_left;
unsigned int start, end, tx_time;
unsigned int tx_len = 0;
int ret = 0;
@ -327,10 +328,10 @@ static int sun4i_spi_transfer_one(struct spi_controller *host,
tx_time = max(tfr->len * 8 * 2 / (tfr->speed_hz / 1000), 100U);
start = jiffies;
timeout = wait_for_completion_timeout(&sspi->done,
time_left = wait_for_completion_timeout(&sspi->done,
msecs_to_jiffies(tx_time));
end = jiffies;
if (!timeout) {
if (!time_left) {
dev_warn(&host->dev,
"%s: timeout transferring %u bytes@%iHz for %i(%i)ms",
dev_name(&spi->dev), tfr->len, tfr->speed_hz,