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The device can take a while to respond to an open/close request, so
increase the time kernel will wait for response (1 ms to 10ms).
Also, properly clean up a channel on a failed open, by calling the channel
close routine. Just freeing the memory isn't sufficient, the device needs
to be informed that the channel is no longer open, and the device memory
cleared of references to freed dma buffer.
Signed-off-by: David Altobelli <david.altobelli@hp.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
c073b2db00