tree 637c2ed713cbfa712d4306f98a43656379e1c5ba
parent 6e18b27bd0911d4d2495c6fdeeac0c047d915300
author Masato Noguchi <Masato.Noguchi@jp.sony.com> 1150742013 +0200
committer Paul Mackerras <paulus@samba.org> 1150866092 +1000

[POWERPC] spufs: clear class2 interrupt status before wakeup

SPU interrupt status must be cleared before handle it.
Otherwise, kernel may drop some interrupt packet.

Currently, class2 interrupt treated like:
 1) call callback to wake up waiting process
 2) mask raised mailbox interrupt
 3) clear interrupt status

I changed like:
 1) mask raised mailbox interrupt
 2) clear interrupt status
 3) call callback to wake up waiting process

Clearing status before masking will make spurious interrupt.
Thus, it is necessary to hold by steps I described above, I think.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>