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[v3,3/8] mmc: sdhci: report error once the maximum tuning loops exhausted or timeout

Message ID 1382096930-7964-4-git-send-email-b29396@freescale.com (mailing list archive)
State New, archived
Headers show

Commit Message

Aisheng Dong Oct. 18, 2013, 11:48 a.m. UTC 
The original code missed to report an error when the maximum tuning loops exhausted
or timeout, it will cause the upper layer to wrongly think the tuning process
is passed.

Signed-off-by: Dong Aisheng <b29396@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
---
 drivers/mmc/host/sdhci.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
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Patch

diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 66bce7a..cbde17d 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1989,6 +1989,7 @@  static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
 	if (!tuning_loop_counter || !timeout) {
 		ctrl &= ~SDHCI_CTRL_TUNED_CLK;
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
+		err = -EIO;
 	} else {
 		if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
 			pr_info(DRIVER_NAME ": Tuning procedure"