From: Graff Yang <graff.yang@gmail.com>
Date: Mon, 2 Mar 2009 08:31:29 +0000 (+0800)
Subject: [MTD] [CHIPS] cfi_cmdset_0001.c: Fix a bug in inval_cache_and_wait_for_operation().
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6ac15e92dfd3064ae484e2e823890622476c4356;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

[MTD] [CHIPS] cfi_cmdset_0001.c: Fix a bug in inval_cache_and_wait_for_operation().

If the inval_cache_and_wait_for_operation() is re-entered by write operation when erase
operation is in progress, the chip->erase_suspended will be cleared, this cause the erase
timeo is not reset and will result time out error for erase.

Signed-off-by: Graff Yang <graff.yang@gmail.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index f5ab6fa1057b..c240454fd113 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -1236,10 +1236,14 @@ static int inval_cache_and_wait_for_operation(
 			remove_wait_queue(&chip->wq, &wait);
 			spin_lock(chip->mutex);
 		}
-		if (chip->erase_suspended || chip->write_suspended)  {
-			/* Suspend has occured while sleep: reset timeout */
+		if (chip->erase_suspended && chip_state == FL_ERASING)  {
+			/* Erase suspend occured while sleep: reset timeout */
 			timeo = reset_timeo;
 			chip->erase_suspended = 0;
+		}
+		if (chip->write_suspended && chip_state == FL_WRITING)  {
+			/* Write suspend occured while sleep: reset timeout */
+			timeo = reset_timeo;
 			chip->write_suspended = 0;
 		}
 	}