From: richard.zhao@linaro.org (Richard Zhao)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 4/6] dma/imx-sdma: move clk_enable out of sdma_request_channel
Date: Fri, 13 Jan 2012 11:09:59 +0800 [thread overview]
Message-ID: <1326424201-20056-5-git-send-email-richard.zhao@linaro.org> (raw)
In-Reply-To: <1326424201-20056-1-git-send-email-richard.zhao@linaro.org>
It makes clk_enable/disable pair more readable, and fix one bug:
sdma_init calls sdma_request_channel, but seems don't know
sdma_request_channel enabled the clok.
Signed-off-by: Richard Zhao <richard.zhao@linaro.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
---
drivers/dma/imx-sdma.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index b40f630..015d93f 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -802,8 +802,6 @@ static int sdma_request_channel(struct sdma_channel *sdmac)
sdma->channel_control[channel].base_bd_ptr = sdmac->bd_phys;
sdma->channel_control[channel].current_bd_ptr = sdmac->bd_phys;
- clk_enable(sdma->clk);
-
sdma_set_channel_priority(sdmac, MXC_SDMA_DEFAULT_PRIORITY);
init_completion(&sdmac->done);
@@ -875,6 +873,9 @@ static int sdma_alloc_chan_resources(struct dma_chan *chan)
sdmac->peripheral_type = data->peripheral_type;
sdmac->event_id0 = data->dma_request;
+
+ clk_enable(sdmac->sdma->clk);
+
ret = sdma_request_channel(sdmac);
if (ret)
return ret;
--
1.7.5.4
next prev parent reply other threads:[~2012-01-13 3:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-13 3:09 [PATCH v2 0/6] imx-sdma: patches when I enable imx6q sabrelite audio Richard Zhao
2012-01-13 3:09 ` [PATCH v2 1/6] dma/imx-sdma: let sdma_run_channel call sdma_enable_channel Richard Zhao
2012-01-13 3:09 ` [PATCH v2 2/6] dma/imx-sdma: use readl_relaxed/writel_relaxed and use writel when necessary Richard Zhao
2012-01-13 3:09 ` [PATCH v2 3/6] dma/imx-sdma: call sdma_set_channel_priority after sdma_request_channel Richard Zhao
2012-01-13 3:09 ` Richard Zhao [this message]
2012-01-13 3:10 ` [PATCH v2 5/6] dma/imx-sdma: use num_events to validate event_id0 Richard Zhao
2012-01-13 3:10 ` [PATCH v2 6/6] dma/imx-sdma: convernt to use bit ops Richard Zhao
2012-01-13 3:13 ` [PATCH v2 0/6] imx-sdma: patches when I enable imx6q sabrelite audio Richard Zhao
2012-01-31 3:35 ` Vinod Koul
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