[PATCH] staging: rtl8723bs: replace msleep(1)

[Kisub Choe <kisub.choe.0x1@gmail.com>]

changed msleep to usleep_range to

Adhere to Linux kernel coding style.
Reported by checkpatch:

WARNING: msleep < 20ms can sleep for up to 20ms;
see function description of msleep().

Signed-off-by: Kisub Choe <kisub.choe.0x1@gmail.com>
---
 drivers/staging/rtl8723bs/core/rtw_pwrctrl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c
index 6a2583d0d3eb..82e77cd8d80c 100644
--- a/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c
+++ b/drivers/staging/rtl8723bs/core/rtw_pwrctrl.c
@@ -7,6 +7,7 @@
 #include <drv_types.h>
 #include <hal_data.h>
 #include <linux/jiffies.h>
+#include <linux/delay.h>
 
 void _ips_enter(struct adapter *padapter)
 {
@@ -424,7 +425,7 @@ s32 LPS_RF_ON_check(struct adapter *padapter, u32 delay_ms)
 			err = -1;
 			break;
 		}
-		msleep(1);
+		usleep_range(900, 1000);
 	}
 
 	return err;
@@ -581,7 +582,7 @@ void LPS_Leave_check(struct adapter *padapter)
 		if (jiffies_to_msecs(jiffies - start_time) > 100)
 			break;
 
-		msleep(1);
+		usleep_range(900, 1000);
 	}
 }
 
-- 
2.34.1