Home
last modified time | relevance | path

Searched hist:"3814 ae092d36da04d5fbaf777c1564dc4ee68559" (Results 1 – 1 of 1) sorted by relevance

/linux/drivers/clocksource/
H A Dem_sti.cdiff 3814ae092d36da04d5fbaf777c1564dc4ee68559 Mon Feb 06 22:12:01 CET 2017 Nicolai Stange <nicstange@gmail.com> clocksource: em_sti: Split clock prepare and enable steps

Currently, the em_sti driver prepares and enables the needed clock in
em_sti_enable(), potentially called through its clockevent device's
->set_state_oneshot().

However, the clk_prepare() step may sleep whereas tick_program_event() and
thus, ->set_state_oneshot(), can be called in atomic context.

Split the clk_prepare_enable() in em_sti_enable() into two steps:
- prepare the clock at device probing via clk_prepare()
- and enable it in em_sti_enable() via clk_enable().
Slightly reorder resource initialization in em_sti_probe() in order to
facilitate error handling in later patches.

Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>