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Commit 52b3f655 authored by Chetan C R's avatar Chetan C R Committed by Gerrit - the friendly Code Review server
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mmc: sdhci-msm: read this reg IPCAT_MINOR_MASK to sdhc host 



When sdcard is removed seeing crash during exit debug
mode. This is fixed by reading IPCAT_MINOR_MASK contents
in probe and saving in sdhc_msm_host minor variable.

Change-Id: Ic2c2e9ffd64ca69778e56e8d93956db6ec36e310
Signed-off-by: default avatarChetan C R <cchinnad@codeaurora.org>
parent c11e7f86

drivers/mmc/host/sdhci-msm.c

+5 −12
Original line number Diff line number Diff line
@@ -1342,11 +1342,8 @@ void sdhci_msm_enter_dbg_mode(struct sdhci_host *host) 
	struct sdhci_msm_host *msm_host = pltfm_host->priv;

	struct platform_device *pdev = msm_host->pdev;

	u32 enable_dbg_feature = 0;

	u32 minor;



	minor = IPCAT_MINOR_MASK(readl_relaxed(host->ioaddr +

				SDCC_IP_CATALOG));

	if (minor < 2 || msm_host->debug_mode_enabled)

	if (msm_host->minor < 2 || msm_host->debug_mode_enabled)

		return;

	if (!(host->quirks2 & SDHCI_QUIRK2_USE_DBG_FEATURE))

		return;
@@ -1360,7 +1357,7 @@ void sdhci_msm_enter_dbg_mode(struct sdhci_host *host) 
			SDCC_TESTBUS_CONFIG) | TESTBUS_EN),

			host->ioaddr + SDCC_TESTBUS_CONFIG);



	if (minor >= 2)

	if (msm_host->minor >= 2)

		enable_dbg_feature |= FSM_HISTORY |

			AUTO_RECOVERY_DISABLE |

			MM_TRIGGER_DISABLE |
@@ -1387,11 +1384,8 @@ void sdhci_msm_exit_dbg_mode(struct sdhci_host *host) 
	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);

	struct sdhci_msm_host *msm_host = pltfm_host->priv;

	struct platform_device *pdev = msm_host->pdev;

	u32 minor;



	minor = IPCAT_MINOR_MASK(readl_relaxed(host->ioaddr +

				SDCC_IP_CATALOG));

	if (minor < 2 || !msm_host->debug_mode_enabled)

	if (msm_host->minor  < 2 || !msm_host->debug_mode_enabled)

		return;

	if (!(host->quirks2 & SDHCI_QUIRK2_USE_DBG_FEATURE))

		return;
@@ -5293,7 +5287,6 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
	void __iomem *tlmm_mem;

	unsigned long flags;

	bool force_probe;

	u32 minor;



	pr_debug("%s: Enter %s\n", dev_name(&pdev->dev), __func__);

	msm_host = devm_kzalloc(&pdev->dev, sizeof(struct sdhci_msm_host),
@@ -5594,7 +5587,7 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
	if (host->quirks2 & SDHCI_QUIRK2_ALWAYS_USE_BASE_CLOCK)

		host->quirks2 |= SDHCI_QUIRK2_DIVIDE_TOUT_BY_4;



	minor = IPCAT_MINOR_MASK(readl_relaxed(host->ioaddr +

	msm_host->minor = IPCAT_MINOR_MASK(readl_relaxed(host->ioaddr +

				SDCC_IP_CATALOG));



	host_version = readw_relaxed((host->ioaddr + SDHCI_HOST_VERSION));
@@ -5796,7 +5789,7 @@ static int sdhci_msm_probe(struct platform_device *pdev) 
		device_remove_file(&pdev->dev, &msm_host->auto_cmd21_attr);

	}



	if (minor >= 2) {

	if (msm_host->minor >= 2) {

		msm_host->mask_and_match.show = show_mask_and_match;

		msm_host->mask_and_match.store = store_mask_and_match;

		sysfs_attr_init(&msm_host->mask_and_match.attr);

drivers/mmc/host/sdhci-msm.h

+1 −0
Original line number Diff line number Diff line
@@ -325,6 +325,7 @@ struct sdhci_msm_host { 
	bool debug_mode_enabled;

	bool reg_store;

	struct reset_control *core_reset;

	u32 minor;

};



extern char *saved_command_line;