From f8e30e447c692aaa728c65930ebc0146f65e1e7b Mon Sep 17 00:00:00 2001 From: Dmitry Adamushko Date: Tue, 8 Apr 2008 17:41:59 -0700 Subject: [PATCH] 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 Cc: David Woodhouse Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/mtd/chips/cfi_cmdset_0002.c | 1 + drivers/mtd/chips/cfi_cmdset_0020.c | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index d072e87ce4e2..458d477614d6 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 b344ff858b2d..492e2ab27420 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);