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[RFC] mmc: davinci: fix corruption after surprise card eject

Message ID 1296724233-3903-1-git-send-email-jon.povey@racelogic.co.uk (mailing list archive)
State New, archived
Headers show

Commit Message

Jon Povey Feb. 3, 2011, 9:10 a.m. UTC
None
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Patch

diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c
index 33d9f1b..e5ee1c1 100644
--- a/drivers/mmc/host/davinci_mmc.c
+++ b/drivers/mmc/host/davinci_mmc.c
@@ -795,6 +795,9 @@  static void calculate_clk_divider(struct mmc_host *mmc, struct mmc_ios *ios)
 	}
 }
 
+static void
+davinci_abort_data(struct mmc_davinci_host *host, struct mmc_data *data);
+
 static void mmc_davinci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 {
 	struct mmc_davinci_host *host = mmc_priv(mmc);
@@ -856,9 +859,14 @@  static void mmc_davinci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
 		}
 		if (lose)
 			dev_warn(mmc_dev(host->mmc), "powerup timeout\n");
-	}
 
-	/* FIXME on power OFF, reset things ... */
+	} else if (ios->power_mode == MMC_POWER_OFF) {
+
+		/* Controller maybe in bad state, e.g. card pulled while writing */
+		davinci_abort_data(host, NULL);
+
+		/* FIXME on power OFF, reset more things ...? */
+	}
 }
 
 static void