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mmc: sdhci: report error once the maximum tuning loops exhausted or timeout

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>
Signed-off-by: Chris Ball <cjb@laptop.org>
Dong Aisheng 12 years ago
parent
6b4fb6712a
commit
114f2bf6a1
1 changed files with 1 additions and 0 deletions
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  1. 1 0
      drivers/mmc/host/sdhci.c

+ 1 - 0
drivers/mmc/host/sdhci.c
View File 

@@ -1989,6 +1989,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode)
 
 	if (!tuning_loop_counter || !timeout) {
 
 	if (!tuning_loop_counter || !timeout) {
 
 		ctrl &= ~SDHCI_CTRL_TUNED_CLK;
 
 		ctrl &= ~SDHCI_CTRL_TUNED_CLK;
 
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
 		sdhci_writew(host, ctrl, SDHCI_HOST_CONTROL2);
 
+		err = -EIO;
 
 	} else {
 
 	} else {
 
 		if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
 
 		if (!(ctrl & SDHCI_CTRL_TUNED_CLK)) {
 
 			pr_info(DRIVER_NAME ": Tuning procedure"
 
 			pr_info(DRIVER_NAME ": Tuning procedure"