commit 91fcc4bb3cf317e44d8de87970f79657f6cf6c3d
author John Rigby <john.rigby@linaro.org> Tue Apr 19 05:48:14 2011 +0000
committer Andy Fleming <afleming@freescale.com> Fri Apr 29 03:22:17 2011 -0500
tree 3845de661f7730fe033b9849a190218fb5322e3c
parent f2f4366ef4167f3debfef7a40a8e56331f7bded3

MMC: omap_hsmmc.c: disable multiblock rw on old rev omap34xx silicon

Signed-off-by: John Rigby <john.rigby@linaro.org>

drivers/mmc/omap_hsmmc.c

diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c
index dcbde89..957b987 100644
--- a/drivers/mmc/omap_hsmmc.c
+++ b/drivers/mmc/omap_hsmmc.c
@@ -467,6 +467,14 @@
 
 	mmc->b_max = 0;
 
+#if defined(CONFIG_OMAP34XX)
+	/*
+	 * Silicon revs 2.1 and older do not support multiblock transfers.
+	 */
+	if ((get_cpu_family() == CPU_OMAP34XX) && (get_cpu_rev() <= CPU_3XX_ES21))
+		mmc->b_max = 1;
+#endif
+
 	mmc_register(mmc);
 
 	return 0;