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authorFelipe Balbi <balbi@ti.com>2012-09-06 08:45:26 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-06 12:17:01 -0400
commit660ac5f48a64026ad54c77d06f8360544e84dc84 (patch)
treedda250aa4856567c3f884232b9457b34fe327cf4 /fs/xfs/xfs_buf.h
parentbf63a0862c964f9015d0d8e3c2ccca7005eebea2 (diff)
serial: omap: stick to put_autosuspend
Everytime we're done using our TTY, we want the pm timer to be reinitilized. By sticking to pm_runtime_pm_autosuspend() we make sure that this will always be the case. The idea behind this patch is to make sure we will always reinitialize the pm timer so that we don't fall into a situation where pm_runtime_put() expires right away (if timer was already about to expire when we made the call to pm_runtime_put()). While suspending right away wouldn't cause any issues, reinitializing the pm timer can help us avoiding unnecessary context save & restore operations (which are somewhat expensive) if there's another read/write/set_termios request coming right after. IOW, we are trying to make sure UART is still powered up while it's still under heavy usage. Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/xfs/xfs_buf.h')
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