From: John Rigby <john.rigby@linaro.org>
Date: Tue, 19 Apr 2011 05:48:14 +0000 (+0000)
Subject: MMC: omap_hsmmc.c: disable multiblock rw on old rev omap34xx silicon
X-Git-Tag: v2011.06-rc1~119^2~2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=4ca9244d74f146a0605f5bee28a66e39aae88d3e;p=kernel%2Fu-boot.git

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

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

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 @@ int omap_mmc_init(int dev_index)
 
 	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;