diff options
| author | Jassi Brar <jassisinghbrar@gmail.com> | 2026-03-22 12:15:33 -0500 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-03-26 16:11:53 +0100 |
| commit | cfe02147e86307a17057ee4e3604f5f5919571d2 (patch) | |
| tree | fa98dbd2d1a4bc7b683738d8a646ceebb60a0976 | |
| parent | 6de23f81a5e08be8fbf5e8d7e9febc72a5b5f27f (diff) | |
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: a6199bb514d8a6 "irqchip: Add Qualcomm MPM controller driver"
Signed-off-by: Jassi Brar <jassisinghbrar@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260322171533.608436-1-jassisinghbrar@gmail.com
| -rw-r--r-- | drivers/irqchip/irq-qcom-mpm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-qcom-mpm.c b/drivers/irqchip/irq-qcom-mpm.c index 83f31ea657b7..181320528a47 100644 --- a/drivers/irqchip/irq-qcom-mpm.c +++ b/drivers/irqchip/irq-qcom-mpm.c @@ -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); |