staging: rtl8723bs: os_intfs: replace msleep with usleep_range

checkpatch.pl warns that msleep() of durations <20ms may sleep for up to 20ms. As per Documentation/timers/delay_sleep_functions.rst, usleep_range() should be used whenever the accuracy of msleep() is not sufficient in order to avoid jiffy rounding.

Replaced msleep(10) with usleep_range(10000, 11000) and replaced a 1ms polling loop (msleep(1)) with usleep_range(1000, 2000). This should provide improved scheduling tolerances without changing the minimum delay expectation for the hardware.

---
 drivers/staging/rtl8723bs/os_dep/os_intfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

index f31196f54b3e..ccac4c2c3269 100644
@@ -992,7 +992,7 @@ void rtw_dev_unload(struct adapter *padapter)
 			if (cnt > 5)
 				break;
 			cnt++;
-			msleep(10);
+			usleep_range(10000, 11000);
 		}
 
 		/* check the status of IPS */

@@ -1092,7 +1092,7 @@ void rtw_suspend_common(struct adapter *padapter)
 	pwrpriv->bInSuspend = true;
 
 	while (pwrpriv->bips_processing)
-		msleep(1);
+		usleep_range(1000, 2000);
 
 	if ((!padapter->bup) || (padapter->bDriverStopped) || (padapter->bSurpriseRemoved))
 		return;

2.55.0

Please see the many places in the mailing list archives where we have rejected this same patch :)