On Tue, Jan 02, 2018 at 03:39:59PM +0530, Keerthy wrote:
> From: Ladislav Michl <ladis@xxxxxxxxxxxxxx>
>
> Invalid prescaler value is silently ignored. Fix that
> by returning -EINVAL in such case. As invalid value
> disabled use of the prescaler, use -1 explicitely for
> that purpose.
>
> Signed-off-by: Ladislav Michl <ladis@xxxxxxxxxxxxxx>
> ---
> drivers/clocksource/timer-dm.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/clocksource/timer-dm.c b/drivers/clocksource/timer-dm.c
> index 60db173..01a9cb0 100644
> --- a/drivers/clocksource/timer-dm.c
> +++ b/drivers/clocksource/timer-dm.c
> @@ -672,6 +672,9 @@ int omap_dm_timer_set_prescaler(struct omap_dm_timer *timer, int prescaler)
> if (prescaler >= 0x00 && prescaler <= 0x07) {
> l |= OMAP_TIMER_CTRL_PRE;
> l |= prescaler << 2;
> + } else {
> + if (prescaler != -1)
> + return -EINVAL;
Argh... This is actually wrong, as it leaves timer enabled.
I suggest simply dropping this patch and I'll rethink whole
approach a bit later (and better).
> }
> omap_dm_timer_write_reg(timer, OMAP_TIMER_CTRL_REG, l);
>
Sorry for the noise,
ladis
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