linux-kernel - Re: [PATCH] gpu: drm: msm: Replace type of paddr to uint32

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Message-ID: <CAMuHMdUCjC8mceiAJpmEHo1jufa1FXNfBxaP9EiFS+uTO=SJCQ@mail.gmail.com>
Date:	Thu, 5 Jun 2014 09:24:02 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Rob Clark <robdclark@...il.com>
Cc:	"Matwey V. Kornilov" <matwey@....msu.ru>,
	David Brown <davidb@...eaurora.org>,
	Daniel Walker <dwalker@...o99.com>,
	Bryan Huntsman <bryanh@...eaurora.org>,
	David Airlie <airlied@...ux.ie>, linux-arm-msm@...r.kernel.org,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	matwey.kornilov@...il.com,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] gpu: drm: msm: Replace type of paddr to uint32_t.

On Thu, Jun 5, 2014 at 2:05 AM, Rob Clark <robdclark@...il.com> wrote:
> On Wed, Jun 4, 2014 at 6:54 AM, Matwey V. Kornilov <matwey@....msu.ru> wrote:
>> From e7147352639fd8f92b1cc85cff9bc5046c7a2130 Mon Sep 17 00:00:00 2001
>> From: "Matwey V. Kornilov" <matwey.kornilov@...il.com>
>> Date: Mon, 2 Jun 2014 20:17:29 +0400
>> Subject: [PATCH] Replace type of paddr to uint32_t.
>>
>> This patch helps to avoid the following build issue:
>>
>> drivers/gpu/drm/msm/msm_fbdev.c:108:2: error: passing argument 3 of
>> 'msm_gem_get_iova_locked' from incompatible pointer type [-Werror]
>>   msm_gem_get_iova_locked(fbdev->bo, 0, &paddr);
>>   ^
>> In file included from drivers/gpu/drm/msm/msm_fbdev.c:18:0:
>> drivers/gpu/drm/msm/msm_drv.h:153:5: note: expected 'uint32_t *' but
>> argument is of type 'dma_addr_t *'
>>  int msm_gem_get_iova_locked(struct drm_gem_object *obj, int id,
>>      ^
>>
>> Signed-off-by: Matwey V. Kornilov <matwey@....msu.ru>
>
> Reviewed-by: Rob Clark <robdclark@...il.com>

Perhaps the uint32_t should become dma_addr_t instead?

drivers/gpu/drm/msm/msm_gem.h has:

        struct {
                // XXX
                uint32_t iova;
        } domain[NUM_DOMAINS];

(note the "XXX").

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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