linux-kernel - Re: [PATCH] media: fix a typo CONFIG_HAVE_GENERIC_DMA

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Message-ID: <CA+V-a8tm+bhnXNEtKHsgQWVUJy3m4k1DNzFvOQhuMk42FnqyAw@mail.gmail.com>
Date:	Tue, 27 Nov 2012 13:01:38 +0530
From:	Prabhakar Lad <prabhakar.csengg@...il.com>
To:	Kyungmin Park <kyungmin.park@...sung.com>
Cc:	LMML <linux-media@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Pawel Osciak <pawel@...iak.com>,
	"Lad, Prabhakar" <prabhakar.lad@...com>,
	Manjunath Hadli <manjunath.hadli@...com>
Subject: Re: [PATCH] media: fix a typo CONFIG_HAVE_GENERIC_DMA_COHERENT in videobuf2-dma-contig.c

Hi,

On Tue, Nov 27, 2012 at 12:47 PM, Kyungmin Park
<kyungmin.park@...sung.com> wrote:
> Hi,
>
> Does it right to use CONFIG_HAVE_GENERIC_DMA_COHERENT?
> it defined at init/Kconfig
>
> config HAVE_GENERIC_DMA_COHERENT
>         bool
>         default n
> and use at C file or header file as CONFIG_ prefix?
> e.g., include/asm-generic/dma-coherent.h:#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
>
My Bad right fix should have been this:

------------------x-----------------------
diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c
b/drivers/media/v4l2-core/videobuf2-dma-contig.c
index 5729450..083b065 100644
--- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
+++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
@@ -226,7 +226,7 @@ static int vb2_dc_mmap(void *buf_priv, struct
vm_area_struct *vma)
 /*         DMABUF ops for exporters          */
 /*********************************************/

-#ifdef HAVE_GENERIC_DMA_COHERENT
+#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT

 struct vb2_dc_attachment {
        struct sg_table sgt;

Regards,
--Prabhakar

> Thank you,
> Kyungmin Park
>
> On 11/27/12, Prabhakar Lad <prabhakar.csengg@...il.com> wrote:
>> From: Lad, Prabhakar <prabhakar.lad@...com>
>>
>> from commit 93049b9368a2e257ace66252ab2cc066f3399cad, which adds
>> a check HAVE_GENERIC_DMA_COHERENT for dma ops, the check was wrongly
>> made it should have been HAVE_GENERIC_DMA_COHERENT but it was
>> CONFIG_HAVE_GENERIC_DMA_COHERENT.
>> This patch fixes the typo, which was causing following build error:
>>
>> videobuf2-dma-contig.c:743: error: 'vb2_dc_get_dmabuf' undeclared here (not
>> in a function)
>> make[3]: *** [drivers/media/v4l2-core/videobuf2-dma-contig.o] Error 1
>>
>> Signed-off-by: Lad, Prabhakar <prabhakar.lad@...com>
>> Signed-off-by: Manjunath Hadli <manjunath.hadli@...com>
>> ---
>>  drivers/media/v4l2-core/videobuf2-dma-contig.c |    2 +-
>>  1 files changed, 1 insertions(+), 1 deletions(-)
>>
>> diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> index 5729450..dfea692 100644
>> --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c
>> @@ -739,7 +739,7 @@ static void *vb2_dc_attach_dmabuf(void *alloc_ctx,
>> struct dma_buf *dbuf,
>>  const struct vb2_mem_ops vb2_dma_contig_memops = {
>>       .alloc          = vb2_dc_alloc,
>>       .put            = vb2_dc_put,
>> -#ifdef CONFIG_HAVE_GENERIC_DMA_COHERENT
>> +#ifdef HAVE_GENERIC_DMA_COHERENT
>>       .get_dmabuf     = vb2_dc_get_dmabuf,
>>  #endif
>>       .cookie         = vb2_dc_cookie,
>> --
>> 1.7.0.4
>>
>> --
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