From: nicolas.ferre@atmel•com (Nicolas Ferre)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 2/8] at_hdmac: prepare clk before calling enable
Date: Thu, 20 Jun 2013 09:43:52 +0200 [thread overview]
Message-ID: <51C2B2B8.2040104@atmel.com> (raw)
In-Reply-To: <1371640494-9472-1-git-send-email-b.brezillon@overkiz.com>
On 19/06/2013 13:14, Boris BREZILLON :
> Replace clk_enable/disable with clk_prepare_enable/disable_unprepare to
> avoid common clk framework warnings.
>
> Signed-off-by: Boris BREZILLON <b.brezillon@overkiz•com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel•com>
BTW Vinod, it seems that we have several slave-dma patches pending: do
you want me to collect them and send you a pull-request for 3.11?
Best regards,
> ---
> drivers/dma/at_hdmac.c | 17 +++++++++++------
> 1 file changed, 11 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
> index e923cda..19a484a 100644
> --- a/drivers/dma/at_hdmac.c
> +++ b/drivers/dma/at_hdmac.c
> @@ -1374,7 +1374,9 @@ static int __init at_dma_probe(struct platform_device *pdev)
> err = PTR_ERR(atdma->clk);
> goto err_clk;
> }
> - clk_enable(atdma->clk);
> + err = clk_prepare_enable(atdma->clk);
> + if (err)
> + goto err_clk_prepare;
>
> /* force dma off, just in case */
> at_dma_off(atdma);
> @@ -1475,7 +1477,8 @@ err_pool_create:
> platform_set_drvdata(pdev, NULL);
> free_irq(platform_get_irq(pdev, 0), atdma);
> err_irq:
> - clk_disable(atdma->clk);
> + clk_disable_unprepare(atdma->clk);
> +err_clk_prepare:
> clk_put(atdma->clk);
> err_clk:
> iounmap(atdma->regs);
> @@ -1512,7 +1515,7 @@ static int at_dma_remove(struct platform_device *pdev)
> list_del(&chan->device_node);
> }
>
> - clk_disable(atdma->clk);
> + clk_disable_unprepare(atdma->clk);
> clk_put(atdma->clk);
>
> iounmap(atdma->regs);
> @@ -1531,7 +1534,7 @@ static void at_dma_shutdown(struct platform_device *pdev)
> struct at_dma *atdma = platform_get_drvdata(pdev);
>
> at_dma_off(platform_get_drvdata(pdev));
> - clk_disable(atdma->clk);
> + clk_disable_unprepare(atdma->clk);
> }
>
> static int at_dma_prepare(struct device *dev)
> @@ -1588,7 +1591,7 @@ static int at_dma_suspend_noirq(struct device *dev)
>
> /* disable DMA controller */
> at_dma_off(atdma);
> - clk_disable(atdma->clk);
> + clk_disable_unprepare(atdma->clk);
> return 0;
> }
>
> @@ -1618,7 +1621,9 @@ static int at_dma_resume_noirq(struct device *dev)
> struct dma_chan *chan, *_chan;
>
> /* bring back DMA controller */
> - clk_enable(atdma->clk);
> + err = clk_prepare_enable(atdma->clk);
> + if (err)
> + return err;
> dma_writel(atdma, EN, AT_DMA_ENABLE);
>
> /* clear any pending interrupt */
>
--
Nicolas Ferre
next prev parent reply other threads:[~2013-06-20 7:43 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-19 11:11 [PATCH 0/8] ARM: at91: prepare the move to common clk framework Boris BREZILLON
2013-06-19 11:13 ` [PATCH 1/8] ARM: at91/tc/clocksource: replace clk_enable/disable with clk_prepare_enable/disable_unprepare Boris BREZILLON
2013-06-20 7:33 ` Nicolas Ferre
2013-06-19 11:14 ` [PATCH 2/8] at_hdmac: prepare clk before calling enable Boris BREZILLON
2013-06-20 7:43 ` Nicolas Ferre [this message]
2013-06-21 2:40 ` Vinod Koul
2013-06-24 17:40 ` Nicolas Ferre
2013-06-19 11:15 ` Boris BREZILLON
2013-06-19 11:16 ` [PATCH 3/8] mmc: atmel-mci: " Boris BREZILLON
2013-06-19 12:50 ` Ludovic Desroches
2013-06-19 11:17 ` [PATCH 4/8] tty: atmel_serial: " Boris BREZILLON
2013-06-20 7:48 ` Nicolas Ferre
2013-06-20 8:06 ` boris brezillon
2013-06-20 10:20 ` Nicolas Ferre
2013-06-19 11:18 ` [PATCH 5/8] usb: gadget: at91_udc: " Boris BREZILLON
2013-06-19 11:20 ` [PATCH 6/8] ehci-atmel.c: " Boris BREZILLON
2013-06-19 11:21 ` [PATCH 7/8] USB: ohci-at91: " Boris BREZILLON
2013-06-19 11:22 ` [PATCH 8/8] at91/avr32/atmel_lcdfb: " Boris BREZILLON
2013-06-20 7:49 ` Nicolas Ferre
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