linux-kernel - Re: [PATCH] Staging: fbtft: Use BIT macro

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Date:	Tue, 6 Oct 2015 10:01:30 +0200
From:	Michał Kępień <kernel@...pniu.pl>
To:	Ronit Halder <ronit.crj@...il.com>
Cc:	thomas.petazzoni@...e-electrons.com, devel@...verdev.osuosl.org,
	gregkh@...uxfoundation.org, noralf@...nnes.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Staging: fbtft: Use BIT macro

> Replace (1 << x) by BIT(x)
> 
> Signed-off-by: Ronit halder <ronit.crj@...il.com>

Minor nit: you stopped capitalizing your surname in your SoBs sometime
between Jul 10 and Aug 19 (judging from a quick peek at git log).

> diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
> index 6dd42b2..375af6b 100644
> --- a/drivers/staging/fbtft/fbtft.h
> +++ b/drivers/staging/fbtft/fbtft.h
> @@ -374,39 +374,39 @@ module_exit(fbtft_driver_module_exit);
>  #define DEBUG_LEVEL_6	(DEBUG_LEVEL_4 | DEBUG_LEVEL_5)
>  #define DEBUG_LEVEL_7	0xFFFFFFFF
>  
> -#define DEBUG_DRIVER_INIT_FUNCTIONS (1<<3)
> -#define DEBUG_TIME_FIRST_UPDATE     (1<<4)
> -#define DEBUG_TIME_EACH_UPDATE      (1<<5)
> -#define DEBUG_DEFERRED_IO           (1<<6)
> -#define DEBUG_FBTFT_INIT_FUNCTIONS  (1<<7)
> +#define DEBUG_DRIVER_INIT_FUNCTIONS	BIT(3)
> +#define DEBUG_TIME_FIRST_UPDATE		BIT(4)
> +#define DEBUG_TIME_EACH_UPDATE		BIT(5)
> +#define DEBUG_DEFERRED_IO			BIT(6)

You put one tab too much in here.

> +#define DEBUG_FBTFT_INIT_FUNCTIONS	BIT(7)
>  
>  /* fbops */
> -#define DEBUG_FB_READ               (1<<8)
> -#define DEBUG_FB_WRITE              (1<<9)
> -#define DEBUG_FB_FILLRECT           (1<<10)
> -#define DEBUG_FB_COPYAREA           (1<<11)
> -#define DEBUG_FB_IMAGEBLIT          (1<<12)
> -#define DEBUG_FB_SETCOLREG          (1<<13)
> -#define DEBUG_FB_BLANK              (1<<14)
> +#define DEBUG_FB_READ               BIT(8)
> +#define DEBUG_FB_WRITE              BIT(9)
> +#define DEBUG_FB_FILLRECT           BIT(10)
> +#define DEBUG_FB_COPYAREA           BIT(11)
> +#define DEBUG_FB_IMAGEBLIT          BIT(12)
> +#define DEBUG_FB_SETCOLREG          BIT(13)
> +#define DEBUG_FB_BLANK              BIT(14)
>  
> -#define DEBUG_SYSFS                 (1<<16)
> +#define DEBUG_SYSFS                 BIT(16)
>  
>  /* fbtftops */
> -#define DEBUG_BACKLIGHT             (1<<17)
> -#define DEBUG_READ                  (1<<18)
> -#define DEBUG_WRITE                 (1<<19)
> -#define DEBUG_WRITE_VMEM            (1<<20)
> -#define DEBUG_WRITE_REGISTER        (1<<21)
> -#define DEBUG_SET_ADDR_WIN          (1<<22)
> -#define DEBUG_RESET                 (1<<23)
> -#define DEBUG_MKDIRTY               (1<<24)
> -#define DEBUG_UPDATE_DISPLAY        (1<<25)
> -#define DEBUG_INIT_DISPLAY          (1<<26)
> -#define DEBUG_BLANK                 (1<<27)
> -#define DEBUG_REQUEST_GPIOS         (1<<28)
> -#define DEBUG_FREE_GPIOS            (1<<29)
> -#define DEBUG_REQUEST_GPIOS_MATCH   (1<<30)
> -#define DEBUG_VERIFY_GPIOS          (1<<31)
> +#define DEBUG_BACKLIGHT             BIT(17)
> +#define DEBUG_READ                  BIT(18)
> +#define DEBUG_WRITE                 BIT(19)
> +#define DEBUG_WRITE_VMEM            BIT(20)
> +#define DEBUG_WRITE_REGISTER        BIT(21)
> +#define DEBUG_SET_ADDR_WIN          BIT(22)
> +#define DEBUG_RESET                 BIT(23)
> +#define DEBUG_MKDIRTY               BIT(24)
> +#define DEBUG_UPDATE_DISPLAY        BIT(25)
> +#define DEBUG_INIT_DISPLAY          BIT(26)
> +#define DEBUG_BLANK                 BIT(27)
> +#define DEBUG_REQUEST_GPIOS         BIT(28)
> +#define DEBUG_FREE_GPIOS            BIT(29)
> +#define DEBUG_REQUEST_GPIOS_MATCH   BIT(30)
> +#define DEBUG_VERIFY_GPIOS          BIT(31)

Why did you replace spaces with tabs only in the first hunk of your
patch?

-- 
Best regards,
Michał Kępień
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