serial: omap: make sure to put() on poll_get_char

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if we would reach serial_omap_get_char() while
Data Ready bit isn't set, we would return from
it without kicking our pm timer. This would mean
we would, eventually, have an unbalanced
pm_runtime_get on our device which would prevent
it from ever sleeping again.

Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Felipe Balbi 2012-09-06 15:45:36 +03:00 • committed by Greg Kroah-Hartman

parent 9727faf470

commit a6b19c333c

1 changed files with 7 additions and 2 deletions

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drivers/tty/serial/omap-serial.c

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