tree 5909a392ea9dcd05abde742b6f61efbdd26f9d36
parent 13a7a6ac0a11197edcd0f756a035f472b42cdf8b
author Yongbae Park <yongbae2@gmail.com> 1425379609 +0900
committer Daniel Lezcano <daniel.lezcano@linaro.org> 1425564096 +0100

clocksource: efm32: Fix a NULL pointer dereference

The initialisation of the efm32 clocksource first sets up the irq and only
after that initialises the data needed for irq handling. In case this
initialisation is delayed the irq handler would dereference a NULL pointer.

I'm not aware of anything that could delay the process in such a way, but it's
better to be safe than sorry, so setup the irq only when the clock event device
is ready.

Cc: stable@vger.kernel.org
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Yongbae Park <yongbae2@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>