From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: mchehab@kernel.org, hverkuil@xs4all.nl
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH 1/2] media: pci: cx88: Replace mdelay() with msleep() in cx88_card_setup_pre_i2c()
Date: Fri, 27 Jul 2018 11:38:23 +0800 [thread overview]
Message-ID: <20180727033823.4148-1-baijiaju1990@gmail.com> (raw)
cx88_card_setup_pre_i2c() 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@gmail.com>
---
drivers/media/pci/cx88/cx88-cards.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/media/pci/cx88/cx88-cards.c b/drivers/media/pci/cx88/cx88-cards.c
index 4c92d2388c26..07e1483e987d 100644
--- a/drivers/media/pci/cx88/cx88-cards.c
+++ b/drivers/media/pci/cx88/cx88-cards.c
@@ -3307,9 +3307,9 @@ static void cx88_card_setup_pre_i2c(struct cx88_core *core)
case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
case CX88_BOARD_PROLINK_PV_8000GT:
cx_write(MO_GP2_IO, 0xcf7);
- mdelay(50);
+ msleep(50);
cx_write(MO_GP2_IO, 0xef5);
- mdelay(50);
+ msleep(50);
cx_write(MO_GP2_IO, 0xcf7);
usleep_range(10000, 20000);
break;
--
2.17.0
reply other threads:[~2018-07-27 3:38 UTC|newest]
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