Commit cfe02147 authored by Jassi Brar's avatar Jassi Brar Committed by Thomas Gleixner
Browse files

irqchip/qcom-mpm: Add missing mailbox TX done acknowledgment 



The mbox_client for qcom-mpm sends NULL doorbell messages via
mbox_send_message() but never signals TX completion.

Set knows_txdone=true and call mbox_client_txdone() after a successful
send, matching the pattern used by other Qualcomm mailbox clients (smp2p,
smsm, qcom_aoss etc).

Fixes: a6199bb5 "irqchip: Add Qualcomm MPM controller driver"
Signed-off-by: default avatarJassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: default avatarThomas Gleixner <tglx@kernel.org>
Reviewed-by: default avatarDouglas Anderson <dianders@chromium.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260322171533.608436-1-jassisinghbrar@gmail.com
parent 6de23f81

drivers/irqchip/irq-qcom-mpm.c

+3 −0
Original line number Diff line number Diff line
@@ -306,6 +306,8 @@ static int mpm_pd_power_off(struct generic_pm_domain *genpd) 
	if (ret < 0)

		return ret;



	mbox_client_txdone(priv->mbox_chan, 0);



	return 0;

}
@@ -434,6 +436,7 @@ static int qcom_mpm_probe(struct platform_device *pdev, struct device_node *pare 
	}



	priv->mbox_client.dev = dev;

	priv->mbox_client.knows_txdone = true;

	priv->mbox_chan = mbox_request_channel(&priv->mbox_client, 0);

	if (IS_ERR(priv->mbox_chan)) {

		ret = PTR_ERR(priv->mbox_chan);