[PATCH] mtd/chips: add missing set_current_state() to cfi_{amdstd,staa}_sync()
Dmitry Adamushko
dmitry.adamushko at gmail.com
Thu Apr 3 15:38:23 EDT 2008
From: Dmitry Adamushko <dmitry.adamushko at gmail.com>
Subject: [mtd/chips] add missing set_current_state() to cfi_{amdstd,staa}_sync()
cfi_amdstd_sync() and cfi_staa_sync() call schedule() without changing
task's state appropriately.
In case of e.g. chip->state == FL_ERASING, cfi_*_sync() will be busy-looping
either redundantly for a fixed interval of time (for SCHED_NORMAL tasks) or
possibly endlessly (for RT tasks and UP).
Signed-off-by: Dmitry Adamushko <dmitry.adamushko at gmail.com>
---
diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
index d072e87..458d477 100644
--- a/drivers/mtd/chips/cfi_cmdset_0002.c
+++ b/drivers/mtd/chips/cfi_cmdset_0002.c
@@ -1763,6 +1763,7 @@ static void cfi_amdstd_sync (struct mtd_info *mtd)
default:
/* Not an idle state */
+ set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
spin_unlock(chip->mutex);
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index b344ff8..492e2ab 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -1015,6 +1015,7 @@ static void cfi_staa_sync (struct mtd_info *mtd)
default:
/* Not an idle state */
+ set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&chip->wq, &wait);
spin_unlock_bh(chip->mutex);
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