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dm: timer: Skip device that does not have a valid ofnode in pre_probe()

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It is possible that a timer device has a null ofnode, hence there is
no need to further parse DT for the clock rate.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2019-07-05 09:23:15 -07:00 committed by Simon Glass
parent e3665ba9d7
commit 7efb4a6e09
1 changed files with 4 additions and 0 deletions
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4
drivers/timer/timer-uclass.c
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@ -48,6 +48,10 @@ static int timer_pre_probe(struct udevice *dev)
int err;
ulong ret;
/* It is possible that a timer device has a null ofnode */
if (!dev_of_valid(dev))
return 0;
err = clk_get_by_index(dev, 0, &timer_clk);
if (!err) {
ret = clk_get_rate(&timer_clk);