2024-06-03 09:30:16

by Wolfram Sang

[permalink] [raw]
Subject: [PATCH 5/8] media: platform: exynos-gsc: 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.

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

Signed-off-by: Wolfram Sang <[email protected]>
---
drivers/media/platform/samsung/exynos-gsc/gsc-core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/samsung/exynos-gsc/gsc-core.c b/drivers/media/platform/samsung/exynos-gsc/gsc-core.c
index 618ae55fe396..f45f5c8612a6 100644
--- a/drivers/media/platform/samsung/exynos-gsc/gsc-core.c
+++ b/drivers/media/platform/samsung/exynos-gsc/gsc-core.c
@@ -1225,7 +1225,7 @@ static void gsc_remove(struct platform_device *pdev)
static int gsc_m2m_suspend(struct gsc_dev *gsc)
{
unsigned long flags;
- int timeout;
+ long time_left;

spin_lock_irqsave(&gsc->slock, flags);
if (!gsc_m2m_pending(gsc)) {
@@ -1236,12 +1236,12 @@ static int gsc_m2m_suspend(struct gsc_dev *gsc)
set_bit(ST_M2M_SUSPENDING, &gsc->state);
spin_unlock_irqrestore(&gsc->slock, flags);

- timeout = wait_event_timeout(gsc->irq_queue,
- test_bit(ST_M2M_SUSPENDED, &gsc->state),
- GSC_SHUTDOWN_TIMEOUT);
+ time_left = wait_event_timeout(gsc->irq_queue,
+ test_bit(ST_M2M_SUSPENDED, &gsc->state),
+ GSC_SHUTDOWN_TIMEOUT);

clear_bit(ST_M2M_SUSPENDING, &gsc->state);
- return timeout == 0 ? -EAGAIN : 0;
+ return time_left == 0 ? -EAGAIN : 0;
}

static void gsc_m2m_resume(struct gsc_dev *gsc)
--
2.43.0