mailbox: ti-msgmgr: Do not report rx poll timeout as a send failure

In polled rx mode, used from system suspend until resume,
ti_msgmgr_send_data() writes the message to the tx queue and then
waits for the response. If no response arrives in time it returns
the poll error.

The mailbox core treats a ->send_data() error as a send failure.
So, it leaves the message queued without making it the active request,
and mbox_send_message() still returns success. The message is then
submitted again on the next tx_tick() or mbox_send_message(), after the
client has probably timed out and moved on. So, the firmware receives
the same message twice, and later requests are sent late and can have
responses matched to the wrong request.

The message has already been transmitted at this point, so return 0
and only log the missing response. The client detects this case with
its own response timeout anyways.

Signed-off-by: Beleswar Padhi <b-padhi@ti.com>
Acked-by: Andrew Davis <afd@ti.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>

0 files changed, 0 insertions, 0 deletions