[PATCH] media: pci: cx23885: Replace mdelay() with msleep() and usleep_range() in altera_ci_slot_reset()

From: Jia-Ju Bai
Date: Thu Jul 26 2018 - 23:09:56 EST


altera_ci_slot_reset() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx>
---
drivers/media/pci/cx23885/altera-ci.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/pci/cx23885/altera-ci.c b/drivers/media/pci/cx23885/altera-ci.c
index 70aec9bb7e95..62bc8049b320 100644
--- a/drivers/media/pci/cx23885/altera-ci.c
+++ b/drivers/media/pci/cx23885/altera-ci.c
@@ -346,7 +346,7 @@ static int altera_ci_slot_reset(struct dvb_ca_en50221 *en50221, int slot)
mutex_unlock(&inter->fpga_mutex);

for (;;) {
- mdelay(50);
+ msleep(50);

mutex_lock(&inter->fpga_mutex);

--
2.17.0