diff options
| author | Jia-Ju Bai | 2018-07-30 11:24:59 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2018-08-03 01:15:53 +0200 |
| commit | 7a3369e8a78538e813e96294b8c7fce9feb76e0f (patch) | |
| tree | 8c64c9991e28eb489541ef97b326b6f461002e9f /drivers/media | |
| parent | media: usb: em28xx: Replace GFP_ATOMIC with GFP_KERNEL in em28xx_init_usb_xfer() (diff) | |
| download | kernel-qcow2-linux-7a3369e8a78538e813e96294b8c7fce9feb76e0f.tar.gz kernel-qcow2-linux-7a3369e8a78538e813e96294b8c7fce9feb76e0f.tar.xz kernel-qcow2-linux-7a3369e8a78538e813e96294b8c7fce9feb76e0f.zip | |
media: usb: em28xx: Replace mdelay() with msleep() in em28xx_pre_card_setup()
em28xx_pre_card_setup() 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>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-cards.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-cards.c b/drivers/media/usb/em28xx/em28xx-cards.c index 98a428769baa..71c829f31d3b 100644 --- a/drivers/media/usb/em28xx/em28xx-cards.c +++ b/drivers/media/usb/em28xx/em28xx-cards.c @@ -2852,13 +2852,13 @@ static void em28xx_pre_card_setup(struct em28xx *dev) em28xx_write_reg(dev, EM2880_R04_GPO, 0x01); usleep_range(10000, 11000); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfd); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfc); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xdc); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfc); - mdelay(70); + msleep(70); break; case EM2870_BOARD_TERRATEC_XS_MT2060: /* @@ -2866,11 +2866,11 @@ static void em28xx_pre_card_setup(struct em28xx *dev) * demod work */ em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xde); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe); - mdelay(70); + msleep(70); break; case EM2870_BOARD_PINNACLE_PCTV_DVB: /* @@ -2878,11 +2878,11 @@ static void em28xx_pre_card_setup(struct em28xx *dev) * DVB-T demod work */ em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xde); - mdelay(70); + msleep(70); em28xx_write_reg(dev, EM2820_R08_GPIO_CTRL, 0xfe); - mdelay(70); + msleep(70); break; case EM2820_BOARD_GADMEI_UTV310: case EM2820_BOARD_MSI_VOX_USB_2: |