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|---|---|
| From | Vinod Koul <vinod.koul@intel.com> |
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] rcar-dmac: fixup descriptor pointer for descriptor mode |
| Date | Tue, 30 May 2017 08:20:02 +0200 |
| Message-ID | <tMIFA-3sh-13@gated-at.bofh.it> (permalink) |
| References | <tMIFA-3sh-15@gated-at.bofh.it> |
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| Sender | robomod@news.nic.it |
| List-ID | <linux-kernel.vger.kernel.org> |
| X-Mailing-List | linux-kernel@vger.kernel.org |
| Approved | robomod@news.nic.it |
| Lines | 14 |
| Organization | linux.* mail to news gateway |
| X-Original-Cc | Dan Williams <dan.j.williams@intel.com>, Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>, Geert Uytterhoeven <geert+renesas@glider.be>, dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org |
| X-Original-Date | Tue, 30 May 2017 11:50:05 +0530 |
| X-Original-Message-ID | <20170530062005.GL15061@localhost> |
| X-Original-References | <87shjwt5po.wl%kuninori.morimoto.gx@renesas.com> |
| X-Original-Sender | linux-kernel-owner@vger.kernel.org |
| Xref | csiph.com linux.kernel:1652830 |
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On Tue, May 23, 2017 at 07:08:43AM +0000, Kuninori Morimoto wrote: > > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> > > In descriptor mode, the descriptor running pointer is not maintained > by the interrupt handler, thus, driver finds the running descriptor > from the descriptor pointer field in the CHCRB register. > But, CHCRB::DPTR indicates *next* descriptor pointer, not current. > Thus, The residue calculation will be missed. This patch fixup it. Applied, thanks -- ~Vinod
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Re: [PATCH] rcar-dmac: fixup descriptor pointer for descriptor mode Vinod Koul <vinod.koul@intel.com> - 2017-05-30 08:20 +0200
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