From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Agner Subject: [PATCH 2/2] mmc: sdhci-esdhc-imx: enable IPG clock for sdio interrupts Date: Tue, 2 Dec 2014 17:47:25 +0100 Message-ID: <1417538845-10867-2-git-send-email-stefan@agner.ch> References: <1417538845-10867-1-git-send-email-stefan@agner.ch> Return-path: In-Reply-To: <1417538845-10867-1-git-send-email-stefan@agner.ch> Sender: linux-kernel-owner@vger.kernel.org To: chris@printf.net, ulf.hansson@linaro.org, anton@enomsg.org Cc: rmk+kernel@arm.linux.org.uk, b29396@freescale.com, shawn.guo@linaro.org, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, stefan@agner.ch List-Id: linux-mmc@vger.kernel.org Enable IPG clock for sdio interrupts while runtime PM, since this clock is needed for register access. The need of this clock has been verified on Vybrid, but this is probably true for i.MX53 and maybe others. The need for bus access during runtime suspend has been introduced with be138554a792 ("mmc: sdhci: allow sdio interrupts while sdhci runtime suspended"). Signed-off-by: Stefan Agner --- drivers/mmc/host/sdhci-esdhc-imx.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index 587ee0e..b7e9ad1 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -1193,10 +1193,10 @@ static int sdhci_esdhc_runtime_suspend(struct device *dev) ret = sdhci_runtime_suspend_host(host); - if (!sdhci_sdio_irq_enabled(host)) { + if (!sdhci_sdio_irq_enabled(host)) clk_disable_unprepare(imx_data->clk_per); - clk_disable_unprepare(imx_data->clk_ipg); - } + + clk_disable_unprepare(imx_data->clk_ipg); clk_disable_unprepare(imx_data->clk_ahb); return ret; @@ -1208,10 +1208,10 @@ static int sdhci_esdhc_runtime_resume(struct device *dev) struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct pltfm_imx_data *imx_data = pltfm_host->priv; - if (!sdhci_sdio_irq_enabled(host)) { + if (!sdhci_sdio_irq_enabled(host)) clk_prepare_enable(imx_data->clk_per); - clk_prepare_enable(imx_data->clk_ipg); - } + + clk_prepare_enable(imx_data->clk_ipg); clk_prepare_enable(imx_data->clk_ahb); return sdhci_runtime_resume_host(host); -- 2.1.3