[PATCH v2] b43: Replace mdelay with usleep_range in b43_radio_2057_init_post
Greg KH <[email protected]>
| Newsgroups | org.infradead.lists.b43-dev,org.kernel.vger.linux-kernel,org.kernel.vger.linux-wireless,org.kernel.vger.netdev |
|---|---|
| Message-ID | <[email protected]> |
On Tue, Jan 09, 2018 at 09:40:06AM +0800, Jia-Ju Bai wrote: > 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 <[email protected]> > --- > v2: > * Replace mdelay with usleep_range, instead of msleep in v1. > Thank Larry for good advice. > --- > drivers/net/wireless/broadcom/b43/phy_n.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/net/wireless/broadcom/b43/phy_n.c b/drivers/net/wireless/broadcom/b43/phy_n.c > index a5557d7..f2a2f41 100644 > --- 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); Where did 3000 come from? Are you sure about that? thanks, greg k-h