[PATCH] staging: rts5208: use usleep_range instead of udelay

[PATCH] staging: rts5208: use usleep_range instead of udelay

[Keerthi Reddy]

Since a its a slow device, allow a small range of 100

Signed-off-by: Keerthi Reddy <Keerthigd4990@gmail.com>
---
 drivers/staging/rts5208/rtsx_card.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/rts5208/rtsx_card.c b/drivers/staging/rts5208/rtsx_card.c
index a6b7bff..418e29d 100644
--- a/drivers/staging/rts5208/rtsx_card.c
+++ b/drivers/staging/rts5208/rtsx_card.c
@@ -825,7 +825,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
 	}
 
 	if (sd_vpclk_phase_reset) {
-		udelay(200);
+		usleep_range(200, 300);
 		retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
 					     PHASE_NOT_RESET, PHASE_NOT_RESET);
 		if (retval) {
@@ -838,7 +838,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
 			rtsx_trace(chip);
 			return retval;
 		}
-		udelay(200);
+		usleep_range(200, 300);
 	}
 	retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
 	if (retval) {
-- 
2.7.4

Re: [Outreachy kernel] [PATCH] staging: rts5208: use usleep_range instead of udelay

[Julia Lawall]

On Mon, 2 Oct 2017, Keerthi Reddy wrote:

> Since a its a slow device, allow a small range of 100

How do you know that it is a slow device?

Try to make the commit log message more self contained, not a continuation
of the subject line, and use the imperative.

julia

>
> Signed-off-by: Keerthi Reddy <Keerthigd4990@gmail.com>
> ---
>  drivers/staging/rts5208/rtsx_card.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/staging/rts5208/rtsx_card.c b/drivers/staging/rts5208/rtsx_card.c
> index a6b7bff..418e29d 100644
> --- a/drivers/staging/rts5208/rtsx_card.c
> +++ b/drivers/staging/rts5208/rtsx_card.c
> @@ -825,7 +825,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
>  	}
>
>  	if (sd_vpclk_phase_reset) {
> -		udelay(200);
> +		usleep_range(200, 300);
>  		retval = rtsx_write_register(chip, SD_VPCLK0_CTL,
>  					     PHASE_NOT_RESET, PHASE_NOT_RESET);
>  		if (retval) {
> @@ -838,7 +838,7 @@ int switch_normal_clock(struct rtsx_chip *chip, int clk)
>  			rtsx_trace(chip);
>  			return retval;
>  		}
> -		udelay(200);
> +		usleep_range(200, 300);
>  	}
>  	retval = rtsx_write_register(chip, CLK_CTL, 0xFF, 0);
>  	if (retval) {
> --
> 2.7.4
>
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