b43: Replace mdelay with usleep_range in b43_radio_2057_init_post

b43_radio_2057_init_post is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with usleep_range,
to reduce busy wait.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/broadcom/b43/phy_n.c b/drivers/net/wireless/broadcom/b43/phy_n.c
index a5557d7..f2a2f41 100644 (file)
--- a/drivers/net/wireless/broadcom/b43/phy_n.c
+++ b/drivers/net/wireless/broadcom/b43/phy_n.c
@@ -1031,7 +1031,7 @@ static void b43_radio_2057_init_post(struct b43_wldev *dev)
 
        b43_radio_set(dev, R2057_RFPLL_MISC_CAL_RESETN, 0x78);
        b43_radio_set(dev, R2057_XTAL_CONFIG2, 0x80);
-       mdelay(2);
+       usleep_range(2000, 3000);
        b43_radio_mask(dev, R2057_RFPLL_MISC_CAL_RESETN, ~0x78);
        b43_radio_mask(dev, R2057_XTAL_CONFIG2, ~0x80);