linux-kernel - Re: [PATCH V2 2/5] watchdog: of_xilinx

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Date:   Mon, 29 Mar 2021 14:54:35 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Srinivas Neeli <srinivas.neeli@...inx.com>
Cc:     shubhraj@...inx.com, sgoud@...inx.com, michal.simek@...inx.com,
        wim@...ux-watchdog.org, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org, git@...inx.com,
        Srinivas Goud <srinivas.goud@...inx.com>
Subject: Re: [PATCH V2 2/5] watchdog: of_xilinx_wdt: Used BIT macro

On Mon, Mar 29, 2021 at 09:49:36PM +0530, Srinivas Neeli wrote:
> From: Srinivas Goud <srinivas.goud@...inx.com>
> 
> Used BIT macro instead of mask value.
> 
> Signed-off-by: Srinivas Goud <srinivas.goud@...inx.com>
> Signed-off-by: Michal Simek <michal.simek@...inx.com>
> Signed-off-by: Srinivas Neeli <srinivas.neeli@...inx.com>

Reviewed-by: Guenter Roeck <linux@...ck-us.net>

> ---
> Changes in V2:
> -Included bits.h header file.
> ---
>  drivers/watchdog/of_xilinx_wdt.c | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c
> index 00549164b3d7..f76ec56859a4 100644
> --- a/drivers/watchdog/of_xilinx_wdt.c
> +++ b/drivers/watchdog/of_xilinx_wdt.c
> @@ -6,6 +6,7 @@
>   * (C) Copyright 2011 (Alejandro Cabrera <aldaya@...il.com>)
>   */
>  
> +#include <linux/bits.h>
>  #include <linux/clk.h>
>  #include <linux/err.h>
>  #include <linux/module.h>
> @@ -24,12 +25,12 @@
>  #define XWT_TBR_OFFSET      0x8 /* Timebase Register Offset */
>  
>  /* Control/Status Register Masks  */
> -#define XWT_CSR0_WRS_MASK   0x00000008 /* Reset status */
> -#define XWT_CSR0_WDS_MASK   0x00000004 /* Timer state  */
> -#define XWT_CSR0_EWDT1_MASK 0x00000002 /* Enable bit 1 */
> +#define XWT_CSR0_WRS_MASK	BIT(3) /* Reset status */
> +#define XWT_CSR0_WDS_MASK	BIT(2) /* Timer state  */
> +#define XWT_CSR0_EWDT1_MASK	BIT(1) /* Enable bit 1 */
>  
>  /* Control/Status Register 0/1 bits  */
> -#define XWT_CSRX_EWDT2_MASK 0x00000001 /* Enable bit 2 */
> +#define XWT_CSRX_EWDT2_MASK	BIT(0) /* Enable bit 2 */
>  
>  /* SelfTest constants */
>  #define XWT_MAX_SELFTEST_LOOP_COUNT 0x00010000
> -- 
> 2.9.1
>