Commit fb4056da authored Apr 25, 2017 by Vijay Viswanath Committed by Veerabhadrarao Badiganti Sep 14, 2017

mmc: sdhci: Add logs when ignoring timeout due to quirk



Due to some quirks, hardware timeout interrupts of commands with R1B
response get ignored. This is required as some commands take more time
to complete than what hardware controller can wait. But when actual
hardware timeout occurs due to faulty card or any other issue, the
issue will appear as software timeout and the information that a
hardware timeout occurred will be lost. So added logs through
ratelimited prink and ring buffer so that the information will be
present when debugging is required.

Change-Id: Ib8fe83c792251c55889909282d2defe466a123e7
Signed-off-by: Vijay Viswanath <vviswana@codeaurora.org>

parent d8975304

drivers/mmc/host/sdhci.c

+8 −1

Original line number	Diff line number	Diff line
		@@ -3102,8 +3102,15 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
		return;
		}
		if (host->quirks2 &
		SDHCI_QUIRK2_IGNORE_DATATOUT_FOR_R1BCMD)
		SDHCI_QUIRK2_IGNORE_DATATOUT_FOR_R1BCMD) {
		pr_err_ratelimited("%s: %s: ignoring interrupt: 0x%08x due to DATATOUT_FOR_R1B quirk\n",
		mmc_hostname(host->mmc),
		__func__, intmask);
		MMC_TRACE(host->mmc,
		"%s: Quirk ignoring intr: 0x%08x\n",
		__func__, intmask);
		return;
		}
		if (intmask & SDHCI_INT_DATA_TIMEOUT) {
		host->data_cmd = NULL;
		data_cmd->error = -ETIMEDOUT;