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Groups > linux.kernel > #1652830 > unrolled thread
| Started by | Vinod Koul <vinod.koul@intel.com> |
|---|---|
| First post | 2017-05-30 08:20 +0200 |
| Last post | 2017-05-30 08:20 +0200 |
| Articles | 1 — 1 participant |
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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
| From | Vinod Koul <vinod.koul@intel.com> |
|---|---|
| Date | 2017-05-30 08:20 +0200 |
| Subject | Re: [PATCH] rcar-dmac: fixup descriptor pointer for descriptor mode |
| Message-ID | <tMIFA-3sh-13@gated-at.bofh.it> |
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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