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mailbox: pcc: Mark Tx as complete in PCC IRQ handler

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The PCC IRQ handler clears channel-in-use and notifies clients with
mbox_chan_received_data(), but it does not explicitly mark the
transmit as complete. In IRQ completion mode this could leave Tx complete
waiters hanging or lead to generic timeouts in the mailbox core.

Invoke mbox_chan_txdone() in the IRQ path once the platform has
acknowledged the transfer so the core can wake any waiters and update
state accordingly.

Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Adam Young <admiyo@os.amperecomputing.com>
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
This commit is contained in:
Sudeep Holla 2025-10-16 20:08:18 +01:00 • committed by Jassi Brar
parent 3349f80060
commit 9c753f7c95
1 changed files with 1 additions and 0 deletions
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1
drivers/mailbox/pcc.c
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@ -340,6 +340,7 @@ static irqreturn_t pcc_mbox_irq(int irq, void *p)
*/
pchan->chan_in_use = false;
mbox_chan_received_data(chan, NULL);
mbox_chan_txdone(chan, 0);
pcc_chan_acknowledge(pchan);