linux-kernel - [PATCH v2 26/26] mmc: sdhci-pci: add panic write support

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Message-Id: <1352379984-18381-27-git-send-email-dragos.tatulea@intel.com>
Date:	Thu,  8 Nov 2012 15:06:24 +0200
From:	dragos.tatulea@...el.com
To:	linux-kernel@...r.kernel.org, linux-mmc@...r.kernel.org,
	cjb@...top.org
Cc:	kirill.shutemov@...ux.intel.com, irina.tirdea@...el.com,
	octavian.purdila@...el.com, tony.luck@...el.com,
	keescook@...omium.org, dragos.tatulea@...il.com,
	Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH v2 26/26] mmc: sdhci-pci: add panic write support

From: Adrian Hunter <adrian.hunter@...el.com>

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
---
 drivers/mmc/host/sdhci-pci.c |    5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 4bb74b0..bee9a45 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -966,6 +966,8 @@ static void sdhci_pci_hw_reset(struct sdhci_host *host)
 
 	if (!gpio_is_valid(rst_n_gpio))
 		return;
+	if (mmc_panic_task_active(host->mmc))
+		return;
 	gpio_set_value_cansleep(rst_n_gpio, 0);
 	/* For eMMC, minimum is 1us but give it 10us for good measure */
 	udelay(10);
@@ -1278,6 +1280,9 @@ static struct sdhci_pci_slot * __devinit sdhci_pci_probe_slot(
 	}
 
 	host->mmc->pm_caps = MMC_PM_KEEP_POWER | MMC_PM_WAKE_SDIO_IRQ;
+#ifdef CONFIG_MMC_BLOCK_PANIC_WRITE
+	slot->host->mmc->caps2 = MMC_CAP_PANIC_WRITE;
+#endif
 
 	ret = sdhci_add_host(host);
 	if (ret)
-- 
1.7.9.5

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