mailbox: check ->last_tx_done for NULL in case of timer-based polling

It is allowed by code to register mailbox controller that sets txdone_poll
flag to request timer-based polling with missed ->last_tx_done() method.
If such thing happens and since presence of last_tx_done() is not checked
it will fail in hrtimer callback function txdone_hrtimer() when first
message will be transmitted.

This patch adds check for this method and logging of error on
registration of mailbox controller if it requested timer-based polling.

Signed-off-by: Alexey Klimov <[email protected]>
Acked-by: Sudeep Holla <[email protected]>
Signed-off-by: Jassi Brar <[email protected]>

0 files changed, 0 insertions, 0 deletions