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Commit 16dabee0 authored by Sahitya Tummala's avatar Sahitya Tummala Committed by Xiaonian Wang
Browse files

mmc: sdhci: Add timestamp debug info for data timeout error 



This helps check the controller timeout logic in case of data
timeout errors.

Change-Id: Ia30757192e49865698c5f52940e1dc5d97746185
Signed-off-by: default avatarSahitya Tummala <stummala@codeaurora.org>
[subhashj@codeaurora.org: fixed minor merge conflict]
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
[xiaonian@codeaurora.org: fix trivial merge conflict]
Signed-off-by: default avatarXiaonian Wang <xiaonian@codeaurora.org>
parent 2886c92c

drivers/mmc/host/sdhci.c

+5 −2
Original line number Diff line number Diff line
@@ -1186,6 +1186,8 @@ void sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd) 
	    cmd->opcode == MMC_SEND_TUNING_BLOCK_HS200)

		flags |= SDHCI_CMD_DATA;



	if (cmd->data)

		host->data_start_time = ktime_get();

	sdhci_writew(host, SDHCI_MAKE_CMD(cmd->opcode, flags), SDHCI_COMMAND);

}

EXPORT_SYMBOL_GPL(sdhci_send_command);
@@ -2736,9 +2738,10 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask) 
			pr_msg = true;

		}

		if (pr_msg) {

			pr_err("%s: data txfr (0x%08x) error: %d\n",

			pr_err("%s: data txfr (0x%08x) error: %d after %lld ms\n",

			       mmc_hostname(host->mmc), intmask,

			       host->data->error);

			       host->data->error, ktime_to_ms(ktime_sub(

			       ktime_get(), host->data_start_time)));

			sdhci_dumpregs(host);

		}

		sdhci_finish_data(host);

drivers/mmc/host/sdhci.h

+1 −0
Original line number Diff line number Diff line
@@ -542,6 +542,7 @@ struct sdhci_host { 


	unsigned int		cpu_dma_latency_us;

	struct pm_qos_request	pm_qos_req_dma;

	ktime_t data_start_time;



	unsigned long private[0] ____cacheline_aligned;

};