linux-kernel - Re: [PATCH v3] video: fbdev: atmel_lcdfb: add COMPILE

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Date:   Sat, 1 Jun 2019 23:06:51 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] video: fbdev: atmel_lcdfb: add COMPILE_TEST support

On 30/05/2019 14:30:19+0200, Bartlomiej Zolnierkiewicz wrote:
> Add COMPILE_TEST support to atmel_lcdfb driver for better compile
> testing coverage.
> 
> While at it fix improper use of UL (to silence build warnings on
> x86_64).
> 
> Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
Acked-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> Cc: Ludovic Desroches <ludovic.desroches@...rochip.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
> v3: fix build warnings on x86_64

Hopefully, no building errors anymore ;)

> 
> v2: add missing HAVE_CLK && HAS IOMEM dependencies
> 
>  drivers/video/fbdev/Kconfig       |    3 ++-
>  drivers/video/fbdev/atmel_lcdfb.c |    4 ++--
>  2 files changed, 4 insertions(+), 3 deletions(-)
> 
> Index: b/drivers/video/fbdev/Kconfig
> ===================================================================
> --- a/drivers/video/fbdev/Kconfig
> +++ b/drivers/video/fbdev/Kconfig
> @@ -855,7 +855,8 @@ config FB_S1D13XXX
>  
>  config FB_ATMEL
>  	tristate "AT91 LCD Controller support"
> -	depends on FB && OF && HAVE_FB_ATMEL
> +	depends on FB && OF && HAVE_CLK && HAS_IOMEM
> +	depends on HAVE_FB_ATMEL || COMPILE_TEST
>  	select FB_BACKLIGHT
>  	select FB_CFB_FILLRECT
>  	select FB_CFB_COPYAREA
> Index: b/drivers/video/fbdev/atmel_lcdfb.c
> ===================================================================
> --- a/drivers/video/fbdev/atmel_lcdfb.c
> +++ b/drivers/video/fbdev/atmel_lcdfb.c
> @@ -673,7 +673,7 @@ static int atmel_lcdfb_set_par(struct fb
>  	lcdc_writel(sinfo, ATMEL_LCDC_MVAL, 0);
>  
>  	/* Disable all interrupts */
> -	lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0UL);
> +	lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0U);
>  	/* Enable FIFO & DMA errors */
>  	lcdc_writel(sinfo, ATMEL_LCDC_IER, ATMEL_LCDC_UFLWI | ATMEL_LCDC_OWRI | ATMEL_LCDC_MERI);
>  
> @@ -1291,7 +1291,7 @@ static int atmel_lcdfb_suspend(struct pl
>  	 * We don't want to handle interrupts while the clock is
>  	 * stopped. It may take forever.
>  	 */
> -	lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0UL);
> +	lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0U);
>  
>  	sinfo->saved_lcdcon = lcdc_readl(sinfo, ATMEL_LCDC_CONTRAST_CTR);
>  	lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, 0);

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com