init_chipset_hpt366() is never called in atomic context. init_chipset_hpt366() is set as ".init_chipset" in struct ide_port_info. This function is not called in atomic context. Despite never getting called from atomic context, init_chipset_hpt366() calls mdelay() to busily wait. This is not necessary and can be replaced with usleep_range() to avoid busy waiting. This is found by a static analysis tool named DCNS written by myself. And I also manually check it. Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> --- drivers/ide/hpt366.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c index 4b5dc01..4045559 100644 --- a/drivers/ide/hpt366.c +++ b/drivers/ide/hpt366.c @@ -984,7 +984,7 @@ static int init_chipset_hpt366(struct pci_dev *dev) for (temp = i = 0; i < 128; i++) { pci_read_config_word(dev, 0x78, &f_cnt); temp += f_cnt & 0x1ff; - mdelay(1); + usleep_range(1000, 2000); } f_cnt = temp / 128; } else -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html