[MTD] NAND: Reorganize chip locking

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The code was wrong in several aspects. The locking order was
inconsistent, the device aquire code did not reset a variable
after a wakeup and the wakeup handling was not working for
applications where multiple chips are sharing a single
hardware controller.
When a hardware controller is available the locking is now
reduced to the hardware controller lock and the waitqueue is
moved to the hardware controller structure in order to avoid
a wake_up_all().

The problem was pointed out by Ben Dooks, who also found the
missing variable reset as main cause for his deadlock problem.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

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Thomas Gleixner 2005-05-31 20:39:20 +01:00 • committed by Thomas Gleixner

parent 7ca6448dbf

commit 0dfc62465e

2 changed files with 33 additions and 29 deletions

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5

include/linux/mtd/nand.h

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