linux-kernel - Re: [PATCH] drm/vc4: Drop debug print at boot with DPI enabled.

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Date:   Thu, 9 Feb 2017 18:11:15 +0100
From:   Daniel Vetter <daniel@...ll.ch>
To:     Eric Anholt <eric@...olt.net>
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/vc4: Drop debug print at boot with DPI enabled.

On Wed, Feb 08, 2017 at 12:47:01PM -0800, Eric Anholt wrote:
> Unlike the other encoders in the driver, I've also dropped the debug
> dump function.  There's only really one register to this device, and
> we have the debugfs reg entry still.
> 
> Signed-off-by: Eric Anholt <eric@...olt.net>

Yeah, dmesg spew by default isn't cool. Btw if you ever want to have fancy
debug printers, there's drm_printer, which allows you to spam both dmesg
and debugfs with the same code. Rob did that, I recently converted drm_mm,
it's pretty cool.

Acked-by: Daniel Vetter <daniel.vetter@...ll.ch>
> ---
>  drivers/gpu/drm/vc4/vc4_dpi.c | 13 -------------
>  1 file changed, 13 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vc4/vc4_dpi.c b/drivers/gpu/drm/vc4/vc4_dpi.c
> index 1e1f6b8184d0..3f360cf6cf5a 100644
> --- a/drivers/gpu/drm/vc4/vc4_dpi.c
> +++ b/drivers/gpu/drm/vc4/vc4_dpi.c
> @@ -144,17 +144,6 @@ static const struct {
>  	DPI_REG(DPI_ID),
>  };
>  
> -static void vc4_dpi_dump_regs(struct vc4_dpi *dpi)
> -{
> -	int i;
> -
> -	for (i = 0; i < ARRAY_SIZE(dpi_regs); i++) {
> -		DRM_INFO("0x%04x (%s): 0x%08x\n",
> -			 dpi_regs[i].reg, dpi_regs[i].name,
> -			 DPI_READ(dpi_regs[i].reg));
> -	}
> -}
> -
>  #ifdef CONFIG_DEBUG_FS
>  int vc4_dpi_debugfs_regs(struct seq_file *m, void *unused)
>  {
> @@ -416,8 +405,6 @@ static int vc4_dpi_bind(struct device *dev, struct device *master, void *data)
>  	if (IS_ERR(dpi->regs))
>  		return PTR_ERR(dpi->regs);
>  
> -	vc4_dpi_dump_regs(dpi);
> -
>  	if (DPI_READ(DPI_ID) != DPI_ID_VALUE) {
>  		dev_err(dev, "Port returned 0x%08x for ID instead of 0x%08x\n",
>  			DPI_READ(DPI_ID), DPI_ID_VALUE);
> -- 
> 2.11.0
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

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