mailbox: bcm2835: Fix of_xlate return value
The bcm2835-mailbox returns NULL instead of an error pointer, which could
result in a NULL ptr dereference in mbox_request_channel. So fix this
by returning a proper error pointer.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 0bae6af6d7
("mailbox: Enable BCM2835 mailbox support")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
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@ -134,7 +134,7 @@ static struct mbox_chan *bcm2835_mbox_index_xlate(struct mbox_controller *mbox,
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const struct of_phandle_args *sp)
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{
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if (sp->args_count != 0)
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return NULL;
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return ERR_PTR(-EINVAL);
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return &mbox->chans[0];
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}
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