linux-kernel - Re: [PATCH 0/3] GPU-DRM-Radeon: Fine-tuning for three function implementations

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Message-ID: <1587529.CdsjPgZMHu@avalon>
Date:   Fri, 12 May 2017 14:38:38 +0300
From:   Laurent Pinchart <laurent.pinchart@...asonboard.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Christian König <christian.koenig@....com>,
        Michel Dänzer <michel@...nzer.net>,
        SF Markus Elfring <elfring@...rs.sourceforge.net>,
        Alex Deucher <alexander.deucher@....com>,
        David Airlie <airlied@...ux.ie>,
        kernel-janitors@...r.kernel.org, amd-gfx@...ts.freedesktop.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/3] GPU-DRM-Radeon: Fine-tuning for three function implementations

Hi Christian,

On Wednesday 10 May 2017 13:30:37 Christian König wrote:
> Am 10.05.2017 um 02:23 schrieb Michel Dänzer:
> > On 03/05/17 09:46 PM, Christian König wrote:
> >> Am 02.05.2017 um 22:04 schrieb SF Markus Elfring:
> >>> From: Markus Elfring <elfring@...rs.sourceforge.net>
> >>> Date: Tue, 2 May 2017 22:00:02 +0200
> >>> 
> >>> Three update suggestions were taken into account
> >>> from static source code analysis.
> >>> 
> >>> Markus Elfring (3):
> >>>     Use seq_putc() in radeon_sa_bo_dump_debug_info()
> >>>     Use seq_puts() in radeon_debugfs_pm_info()
> >>>     Use seq_puts() in r100_debugfs_cp_csq_fifo()
> >> 
> >> Reviewed-by: Christian König <christian.koenig@....com>
> > 
> > Based on
> > https://lists.freedesktop.org/archives/dri-devel/2017-May/140837.html
> > and followups, I'm afraid we'll have to make sure Markus' patches have
> > been tested adequately before applying them.
> 
> I can't judge the background of that decision, but at least those tree
> patches for radeon looked trivial to me.
> 
> I don't see much what could go wrong when merging them.

For what it's worth, I've once applied a patch from Markus for the uvcvideo 
driver that seemed trivial but ended up introducing a breakage that I hadn't 
caught during review. I recommend rejecting Markus' patches that are not clear 
improvements, and carefully testing the others.

> On the other hand you are right that trying to find hardware to test that
> stuff could be challenging.

-- 
Regards,

Laurent Pinchart