From: Jia-Ju Bai <baijiaju1990@gmail.com>
To: mchehab@kernel.org, brad@nextdimension.cc, hverkuil@xs4all.nl,
arvind.yadav.cs@gmail.com
Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org,
Jia-Ju Bai <baijiaju1990@gmail.com>
Subject: [PATCH] media: pci: cx23885: Replace mdelay() with msleep() in cx23885_reset()
Date: Fri, 27 Jul 2018 11:18:46 +0800 [thread overview]
Message-ID: <20180727031846.3157-1-baijiaju1990@gmail.com> (raw)
cx23885_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@gmail.com>
---
drivers/media/pci/cx23885/cx23885-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/pci/cx23885/cx23885-core.c b/drivers/media/pci/cx23885/cx23885-core.c
index 019fac49db5b..9c08d3a9716f 100644
--- a/drivers/media/pci/cx23885/cx23885-core.c
+++ b/drivers/media/pci/cx23885/cx23885-core.c
@@ -635,7 +635,7 @@ static void cx23885_reset(struct cx23885_dev *dev)
cx_write(CLK_DELAY, cx_read(CLK_DELAY) & 0x80000000);
cx_write(PAD_CTRL, 0x00500300);
- mdelay(100);
+ msleep(100);
cx23885_sram_channel_setup(dev, &dev->sram_channels[SRAM_CH01],
720*4, 0);
--
2.17.0
reply other threads:[~2018-07-27 3:18 UTC|newest]
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