From: Vinod Koul <vinod.koul@intel.com>
To: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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
Subject: Re: [PATCH] rcar-dmac: fixup descriptor pointer for descriptor mode
Date: Tue, 30 May 2017 11:50:05 +0530 [thread overview]
Message-ID: <20170530062005.GL15061@localhost> (raw)
In-Reply-To: <87shjwt5po.wl%kuninori.morimoto.gx@renesas.com>
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
prev parent reply other threads:[~2017-05-30 6:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-23 7:08 [PATCH] rcar-dmac: fixup descriptor pointer for descriptor mode Kuninori Morimoto
2017-05-30 6:20 ` Vinod Koul [this message]
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