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Commit 48686b39 authored by Sarthak Garg's avatar Sarthak Garg
Browse files

mmc: core: Remove SD card upon recovery failure 



In case of bad SD card recovery fails everytime.
Also some SD cards fail on Read/writes but can get initialized
successfully.

Mark card as removed and gracefully remove by calling
mmc_detect_change. Also mark the card as corrupted and return
to avoid reinitialization as sdhci_get_cd will return non zero as the
card is physically present and avoid mmc_rescan from proceeding ahead.

Change-Id: Id4c99d4608ef2b5f49cf5ac796a2aaf6d12a56c2
Signed-off-by: default avatarSarthak Garg <sartgarg@codeaurora.org>
parent 5168327a

drivers/mmc/core/block.c

+9 −0
Original line number Diff line number Diff line
@@ -1840,6 +1840,15 @@ static void mmc_blk_mq_rw_recovery(struct mmc_queue *mq, struct request *req) 
	    err && mmc_blk_reset(md, card->host, type)) {

		pr_err("%s: recovery failed!\n", req->rq_disk->disk_name);

		mqrq->retries = MMC_NO_RETRIES;



#if defined(CONFIG_SDC_QTI)

		/* Completely remove the non-recoverable card */

		if (mmc_card_sd(card)) {

			mmc_card_set_removed(card);

			card->host->corrupted_card = true;

			mmc_detect_change(card->host, msecs_to_jiffies(200));

		}

#endif

		return;

	}

drivers/mmc/core/core.c

+5 −0
Original line number Diff line number Diff line
@@ -2997,6 +2997,11 @@ void mmc_rescan(struct work_struct *work) 
	if (host->bus_ops && !host->bus_dead)

		host->bus_ops->detect(host);



#if defined(CONFIG_SDC_QTI)

	if (host->corrupted_card)

		return;

#endif



	host->detect_change = 0;



	/*

drivers/mmc/core/slot-gpio.c

+5 −0
Original line number Diff line number Diff line
@@ -32,6 +32,11 @@ static irqreturn_t mmc_gpio_cd_irqt(int irq, void *dev_id) 
	struct mmc_host *host = dev_id;

	struct mmc_gpio *ctx = host->slot.handler_priv;



#if defined(CONFIG_SDC_QTI)

	/* New card is not corrupted */

	host->corrupted_card = false;

#endif



	host->trigger_card_event = true;

	mmc_detect_change(host, msecs_to_jiffies(ctx->cd_debounce_delay_ms));

include/linux/mmc/host.h

+3 −1
Original line number Diff line number Diff line
@@ -499,7 +499,9 @@ struct mmc_host { 


	int			rescan_disable;	/* disable card detection */

	int			rescan_entered;	/* used with nonremovable devices */



#if defined(CONFIG_SDC_QTI)

	bool			corrupted_card; /* good/bad associated card */

#endif

	int			need_retune;	/* re-tuning is needed */

	int			hold_retune;	/* hold off re-tuning */

	unsigned int		retune_period;	/* re-tuning period in secs */