zd1201_probe() is never called in atomic context. zd1201_probe() is only set as ".probe" in struct usb_driver.
Despite never getting called from atomic context, zd1201_probe() calls mdelay() to busily wait. This is not necessary and can be replaced with msleep() 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 <baijiaju1...@gmail.com> --- drivers/net/wireless/zydas/zd1201.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/zydas/zd1201.c b/drivers/net/wireless/zydas/zd1201.c index 581e857..12774e9 100644 --- a/drivers/net/wireless/zydas/zd1201.c +++ b/drivers/net/wireless/zydas/zd1201.c @@ -1767,7 +1767,7 @@ static int zd1201_probe(struct usb_interface *interface, goto err_zd; } - mdelay(100); + msleep(100); err = zd1201_drvr_start(zd); if (err) goto err_zd; -- 1.9.1