The msleep() function is not recommended for delays under 20ms
as it may sleep for longer than desired. Replace msleep(10) with
usleep_range(10000, 11000) to ensure a more precise delay and
better kernel scheduling behavior.
This resolves a checkpatch.pl warning.

Signed-off-by: Marcos Andrade <marcosandrade95963@gmail.com>
---
 drivers/staging/rtl8723bs/core/rtw_cmd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
index abb84f8ae..261d2e306 100644
--- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
+++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
@@ -4,6 +4,7 @@
  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
  *
  ******************************************************************************/
+#include "linux/delay.h"
 #include <drv_types.h>
 #include <hal_btcoex.h>
 #include <linux/jiffies.h>
@@ -214,7 +215,7 @@ void _rtw_free_evt_priv(struct	evt_priv *pevtpriv)
 {
 	_cancel_workitem_sync(&pevtpriv->c2h_wk);
 	while (pevtpriv->c2h_wk_alive)
-		msleep(10);
+		usleep_range(10000, 11000);
 
 	while (!rtw_cbuf_empty(pevtpriv->c2h_queue)) {
 		void *c2h = rtw_cbuf_pop(pevtpriv->c2h_queue);
-- 
2.53.0

On Sat Mar 14, 2026 at 12:11 AM CDT, Marcos Andrade wrote:
> The msleep() function is not recommended for delays under 20ms
> as it may sleep for longer than desired. Replace msleep(10) with
> usleep_range(10000, 11000) to ensure a more precise delay and
> better kernel scheduling behavior.
> This resolves a checkpatch.pl warning.
>
> Signed-off-by: Marcos Andrade <marcosandrade95963@gmail.com>

...


> +#include "linux/delay.h"

This would be <linux/delay.h>.

>  #include <drv_types.h>
>  #include <hal_btcoex.h>
>  #include <linux/jiffies.h>

This has already came up before and Greg decided to drop it. [1]

Thanks,

ET

[1] https://lore.kernel.org/linux-staging/20260214173139.49094-1-ofekalm100@gmail.com/