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Groups > linux.kernel > #1181158 > unrolled thread

[PATCH v2 0/2] dma: rename write-combine APIs with short form

Started by"Luis R. Rodriguez" <mcgrof@do-not-panic.com>
First post2015-07-10 03:40 +0200
Last post2015-07-10 03:40 +0200
Articles 2 — 1 participant

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  [PATCH v2 0/2] dma: rename write-combine APIs with short form "Luis R. Rodriguez" <mcgrof@do-not-panic.com> - 2015-07-10 03:40 +0200
    [PATCH v2 1/2] drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style "Luis R. Rodriguez" <mcgrof@do-not-panic.com> - 2015-07-10 03:40 +0200

#1181158 — [PATCH v2 0/2] dma: rename write-combine APIs with short form

From"Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Date2015-07-10 03:40 +0200
Subject[PATCH v2 0/2] dma: rename write-combine APIs with short form
Message-ID<pKvse-7NE-7@gated-at.bofh.it>
From: "Luis R. Rodriguez" <mcgrof@suse.com>

Ingo,

You had asked for this to be kept in my tree until the end of the
merge window. I sent it a bit earlier than the end of the merge window,
it failed to apply to Boris' tree as my series was based on linux-next
and then I went on a small vacation. Boris is now on vacation as well.
I've respinned this series today -- and fortunatley both of the patches
in this series apply to both Linus' tree and linux-next, I am in hopes
it applies to any other tree as well without conflicts. If not it should
be easy to respin with the Coccinelle SmPL rule defined.

I'll note that there are a few outstanding series related to MTRR, but
those do not have conflicts with these patches at all so feel free
to consider these before or after. Also I tried to get an ack for the
first patch [1] but that has gone under the radar I believe so
merging it now as part of this series and Cc'ing the maintainers.
That change is needed in order to make the code match the grammar
used by Coccinelle used in the expressed transformation.

[0] http://lkml.kernel.org/r/20150601085332.GA14549@gmail.com
[1] http://lkml.kernel.org/r/1434483609-25498-1-git-send-email-mcgrof@do-not-panic.com

Luis R. Rodriguez (2):
  drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style
  dma: rename dma_*_writecombine() to dma_*_wc()

 arch/arm/mach-lpc32xx/phy3250.c           | 13 ++++++-------
 arch/arm/mach-netx/fb.c                   | 14 ++++++--------
 arch/arm/mach-nspire/clcd.c               | 13 ++++++-------
 arch/avr32/include/asm/dma-mapping.h      | 20 ++++++++++----------
 arch/avr32/mm/dma-coherent.c              | 12 ++++++------
 arch/metag/include/asm/dma-mapping.h      |  4 ++--
 arch/metag/kernel/dma.c                   |  6 +++---
 drivers/dma/iop-adma.c                    |  9 +++++----
 drivers/dma/mv_xor.c                      |  4 ++--
 drivers/dma/qcom_bam_dma.c                | 14 +++++++-------
 drivers/gpu/drm/drm_gem_cma_helper.c      | 13 ++++++-------
 drivers/gpu/drm/omapdrm/omap_dmm_tiler.c  | 13 ++++++-------
 drivers/gpu/drm/omapdrm/omap_gem.c        |  8 ++++----
 drivers/gpu/drm/sti/sti_cursor.c          | 20 ++++++++------------
 drivers/gpu/drm/sti/sti_gdp.c             |  3 +--
 drivers/gpu/drm/sti/sti_hqvdp.c           |  6 +++---
 drivers/gpu/drm/tegra/gem.c               | 11 +++++------
 drivers/gpu/host1x/cdma.c                 |  8 ++++----
 drivers/gpu/host1x/job.c                  | 10 ++++------
 drivers/media/platform/coda/coda-bit.c    | 10 +++++-----
 drivers/video/fbdev/acornfb.c             |  4 ++--
 drivers/video/fbdev/amba-clcd-versatile.c | 14 ++++++--------
 drivers/video/fbdev/amba-clcd.c           |  4 ++--
 drivers/video/fbdev/atmel_lcdfb.c         |  9 +++++----
 drivers/video/fbdev/ep93xx-fb.c           |  8 +++-----
 drivers/video/fbdev/gbefb.c               |  8 ++++----
 drivers/video/fbdev/imxfb.c               | 12 ++++++------
 drivers/video/fbdev/mx3fb.c               |  9 ++++-----
 drivers/video/fbdev/nuc900fb.c            |  8 ++++----
 drivers/video/fbdev/omap/lcdc.c           | 16 ++++++++--------
 drivers/video/fbdev/pxa168fb.c            |  8 ++++----
 drivers/video/fbdev/pxafb.c               |  4 ++--
 drivers/video/fbdev/s3c-fb.c              |  7 +++----
 drivers/video/fbdev/s3c2410fb.c           |  8 ++++----
 drivers/video/fbdev/sa1100fb.c            |  8 ++++----
 include/linux/dma-mapping.h               | 16 ++++++++--------
 sound/arm/pxa2xx-pcm-lib.c                | 20 ++++++++------------
 sound/soc/fsl/imx-pcm-fiq.c               | 10 ++++------
 sound/soc/nuc900/nuc900-pcm.c             |  6 ++----
 sound/soc/omap/omap-pcm.c                 | 12 ++++--------
 40 files changed, 186 insertions(+), 216 deletions(-)

-- 
2.3.2.209.gd67f9d5.dirty

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#1181159 — [PATCH v2 1/2] drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style

From"Luis R. Rodriguez" <mcgrof@do-not-panic.com>
Date2015-07-10 03:40 +0200
Subject[PATCH v2 1/2] drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style
Message-ID<pKvse-7NE-13@gated-at.bofh.it>
In reply to#1181158
From: "Luis R. Rodriguez" <mcgrof@suse.com>

dma_alloc_writecombine()'s call and return value check is tangled in all
in one call. Untangle both calls according to kernel coding style.

Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: dmaengine@vger.kernel.org
Cc: Vinod Koul <vinod.koul@intel.com>
Cc: x86@kernel.org
Link: http://lkml.kernel.org/r/1435258191-543-2-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Borislav Petkov <bp@suse.de>
---
 drivers/dma/iop-adma.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index 998826854fdd..e4f43125e0fb 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1300,10 +1300,11 @@ static int iop_adma_probe(struct platform_device *pdev)
 	 * note: writecombine gives slightly better performance, but
 	 * requires that we explicitly flush the writes
 	 */
-	if ((adev->dma_desc_pool_virt = dma_alloc_writecombine(&pdev->dev,
-					plat_data->pool_size,
-					&adev->dma_desc_pool,
-					GFP_KERNEL)) == NULL) {
+	adev->dma_desc_pool_virt = dma_alloc_writecombine(&pdev->dev,
+							  plat_data->pool_size,
+							  &adev->dma_desc_pool,
+							  GFP_KERNEL);
+	if (!adev->dma_desc_pool_virt) {
 		ret = -ENOMEM;
 		goto err_free_adev;
 	}
-- 
2.3.2.209.gd67f9d5.dirty

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