hw_pll_init(), hw_reset_dac() and hw_card_init() are never called in atomic context. They 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 --- sound/pci/ctxfi/cthw20k1.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sound/pci/ctxfi/cthw20k1.c b/sound/pci/ctxfi/cthw20k1.c index 8e6eb9d7984b..6a051a1c3724 100644 --- a/sound/pci/ctxfi/cthw20k1.c +++ b/sound/pci/ctxfi/cthw20k1.c @@ -1319,7 +1319,7 @@ static int hw_pll_init(struct hw *hw, unsigned int rsr) break;

hw_write_20kx(hw, PLLCTL, pllctl); - mdelay(40); + msleep(40); } if (i >= 3) { dev_alert(hw->card->dev, "PLL initialization failed!!!\n"); @@ -1407,7 +1407,7 @@ static int hw_reset_dac(struct hw *hw) /* To be effective, need to reset the DAC twice. */ for (i = 0; i < 2; i++) { /* set gpio */ - mdelay(100); + msleep(100); gpioorg = (u16)hw_read_20kx(hw, GPIO); gpioorg &= 0xfffd; hw_write_20kx(hw, GPIO, gpioorg); @@ -2030,7 +2030,7 @@ static int hw_card_init(struct hw *hw, struct card_conf *info) hw_write_20kx(hw, GIE, 0); /* Reset all SRC pending interrupts */ hw_write_20kx(hw, SRCIP, 0); - mdelay(30); + msleep(30);

/* Detect the card ID and configure GPIO accordingly. */ switch (hw->model) {