2024-06-03 09:29:56

by Wolfram Sang

[permalink] [raw]
Subject: [PATCH 3/8] media: bdisp: 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/st/sti/bdisp/bdisp-v4l2.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c b/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
index 1328b4eb6b9f..c7ee6e1a4451 100644
--- a/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
+++ b/drivers/media/platform/st/sti/bdisp/bdisp-v4l2.c
@@ -1160,7 +1160,7 @@ static void bdisp_irq_timeout(struct work_struct *ptr)
static int bdisp_m2m_suspend(struct bdisp_dev *bdisp)
{
unsigned long flags;
- int timeout;
+ long time_left;

spin_lock_irqsave(&bdisp->slock, flags);
if (!test_bit(ST_M2M_RUNNING, &bdisp->state)) {
@@ -1171,13 +1171,13 @@ static int bdisp_m2m_suspend(struct bdisp_dev *bdisp)
set_bit(ST_M2M_SUSPENDING, &bdisp->state);
spin_unlock_irqrestore(&bdisp->slock, flags);

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

clear_bit(ST_M2M_SUSPENDING, &bdisp->state);

- if (!timeout) {
+ if (!time_left) {
dev_err(bdisp->dev, "%s IRQ timeout\n", __func__);
return -EAGAIN;
}
--
2.43.0