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Commit 0b20bf4b authored by Maya Erez's avatar Maya Erez
Browse files

mmc: sdhci: Dump out descriptors information in case of req timeout 



Recently we observed an interrupt timeout issue on SDIO use case,
that was caused by a SW bug in the preparation of the ADMA descriptor
table.

Dumping out the descriptor information in requests timeouts, will help
to quickly debug such issues in the future.

Change-Id: Ifa18e514df3fdb2e5808dd7e7b54deed467b1d35
Signed-off-by: default avatarMaya Erez <merez@codeaurora.org>
parent e1b54da6

drivers/mmc/host/sdhci.c

+5 −1
Original line number Diff line number Diff line
@@ -59,6 +59,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode); 
static void sdhci_tuning_timer(unsigned long data);

static void sdhci_enable_preset_value(struct sdhci_host *host, bool enable);

static bool sdhci_check_state(struct sdhci_host *);

static void sdhci_show_adma_error(struct sdhci_host *host);



#ifdef CONFIG_PM_RUNTIME

static int sdhci_runtime_pm_get(struct sdhci_host *host);
@@ -2736,6 +2737,9 @@ static void sdhci_timeout_timer(unsigned long data) 
		if (!host->mrq->cmd->ignore_timeout) {

			pr_err("%s: Timeout waiting for hardware interrupt.\n",

			       mmc_hostname(host->mmc));

			if (host->data)

				sdhci_show_adma_error(host);

			else

				sdhci_dumpregs(host);

		}