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authorThomas Gleixner <tglx@linutronix.de>2005-05-31 15:39:20 -0400
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-06-29 08:15:17 -0400
commit0dfc62465ef92c7ddcb1ba223bf062453566fd0f (patch)
tree0156e9b9996cf43dd67ceed53a2b8da0a516cdec /drivers/isdn
parent7ca6448dbfb398bba36eda3c01bc14b86c3675be (diff)
[MTD] NAND: Reorganize chip locking
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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