On Thu, 2021-06-24 at 19:22 +0800, Coiby Xu wrote:
On Tue, Jun 22, 2021 at 10:20:36AM +0300, Dan Carpenter wrote:
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On Mon, Jun 21, 2021 at 09:48:56PM +0800, Coiby Xu wrote:
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Since wait_count=30 > 0, the for loop is equivalent to do while
loop. This commit also replaces 100 with UDELAY_DELAY.
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diff --git a/drivers/staging/qlge/qlge_main.c b/drivers/staging/qlge/qlge_main.c
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@@ -140,12 +140,13 @@ static int qlge_sem_trylock(struct qlge_adapter *qdev, u32 sem_mask)
int qlge_sem_spinlock(struct qlge_adapter *qdev, u32 sem_mask)
{
unsigned int wait_count = 30;
+ int count;
- do {
+ for (count = 0; count < wait_count; count++) {
if (!qlge_sem_trylock(qdev, sem_mask))
return 0;
- udelay(100);
- } while (--wait_count);
+ udelay(UDELAY_DELAY);
This is an interesting way to silence the checkpatch udelay warning. ;)
I didn't know this could silence the warning :)
It also seems odd to have unsigned int wait_count and int count.
Maybe just use 30 in the loop without using wait_count at all.
I also think using UDELAY_DELAY is silly and essentially misleading
as it's also used as an argument value for mdelay
$ git grep -w UDELAY_DELAY
drivers/staging/qlge/qlge.h:#define UDELAY_DELAY 100
drivers/staging/qlge/qlge_main.c: udelay(UDELAY_DELAY);
drivers/staging/qlge/qlge_main.c: udelay(UDELAY_DELAY);
drivers/staging/qlge/qlge_mpi.c: mdelay(UDELAY_DELAY);
drivers/staging/qlge/qlge_mpi.c: mdelay(UDELAY_DELAY);
drivers/staging/qlge/qlge_mpi.c: mdelay(UDELAY_DELAY); /* 100ms */