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[5/7] mtd: Blackfin NFC: make sure to check NAND_ALE in cmd_ctrl

Message ID 1281020864-26842-5-git-send-email-vapier@gentoo.org
State Accepted
Commit fd508da2208696db146cd1be2bb2e8b799f6e3a2
Headers show

Commit Message

Mike Frysinger Aug. 5, 2010, 3:07 p.m. UTC 
From: Barry Song <barry.song@analog.com>

The NAND base may send some controls which are neither CLE nor ALE, so
we need to explicitly check both instead of assuming things are always
one or the other.  Otherwise, we sometimes send out illegal addresses
to the NAND device.

Signed-off-by: Barry Song <barry.song@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
 drivers/mtd/nand/bf5xx_nand.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/mtd/nand/bf5xx_nand.c b/drivers/mtd/nand/bf5xx_nand.c
index 949f656..2f90cac 100644
--- a/drivers/mtd/nand/bf5xx_nand.c
+++ b/drivers/mtd/nand/bf5xx_nand.c
@@ -203,7 +203,7 @@  static void bf5xx_nand_hwcontrol(struct mtd_info *mtd, int cmd,
 
 	if (ctrl & NAND_CLE)
 		bfin_write_NFC_CMD(cmd);
-	else
+	else if (ctrl & NAND_ALE)
 		bfin_write_NFC_ADDR(cmd);
 	SSYNC();
 }