[060/129] mmc: sd: Fix SDR12 timing regression

From: Greg KH
Date: Mon Jan 23 2012 - 22:04:58 EST


3.2-stable review patch. If anyone has any objections, please let me know.

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Content-Length: 1174
Lines: 32

From: Alexander Elbs <alex@xxxxxxx>

commit dd8df17fe83483d7ea06ff229895e35a42071599 upstream.

This patch fixes a failure to recognize SD cards reported on a Dell
Vostro with O2 Micro SD card reader. Patch 49c468f ("mmc: sd: add
support for uhs bus speed mode selection") caused the problem, by
setting the SDHCI_CTRL_HISPD flag even for legacy timings.

Signed-off-by: Alexander Elbs <alex@xxxxxxx>
Acked-by: Philip Rakity <prakity@xxxxxxxxxxx>
Acked-by: Arindam Nath <arindam.nath@xxxxxxx>
Signed-off-by: Chris Ball <cjb@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
drivers/mmc/host/sdhci.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1364,8 +1364,7 @@ static void sdhci_do_set_ios(struct sdhc
if ((ios->timing == MMC_TIMING_UHS_SDR50) ||
(ios->timing == MMC_TIMING_UHS_SDR104) ||
(ios->timing == MMC_TIMING_UHS_DDR50) ||
- (ios->timing == MMC_TIMING_UHS_SDR25) ||
- (ios->timing == MMC_TIMING_UHS_SDR12))
+ (ios->timing == MMC_TIMING_UHS_SDR25))
ctrl |= SDHCI_CTRL_HISPD;

ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);


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