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Mon, 16 Feb 2026 10:11:34 -0800 (PST) Received: from dianders.sjc.corp.google.com ([2a00:79e0:2e7c:8:2953:dae1:1e39:73b3]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-12742c64282sm13724326c88.5.2026.02.16.10.11.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 16 Feb 2026 10:11:33 -0800 (PST) From: Douglas Anderson To: jassisinghbrar@gmail.com Cc: Douglas Anderson , linux-kernel@vger.kernel.org, tglx@kernel.org Subject: [PATCH v3 06/15] irqchip/qcom-mpm: Use mbox_ring_doorbell() instead of NULL message Date: Mon, 16 Feb 2026 10:09:43 -0800 Message-ID: <20260216100943.v3.6.I59d887fd641f70e40950b7545ed31f193cd1c270@changeid> X-Mailer: git-send-email 2.53.0.273.g2a3d683680-goog In-Reply-To: <20260216181002.3475421-1-dianders@chromium.org> References: <20260216181002.3475421-1-dianders@chromium.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" As per the patch ("mailbox: Deprecate NULL mbox messages; Introduce mbox_ring_doorbell()"), we want to switch all users of NULL mailbox messages to use mbox_ring_doorbell(). This client only ever sent NULL messages, so the transition is straightforward. This client didn't previously call mbox_client_txdone() and it appears that the mailboxes it hooks up with (qcom-apcs-ipc-mailbox.c or qcom-ipcc.c) have both `txdone_irq` and `txdone_poll` as false. Presumably this means the client was relying the mailbox core's quirky behavior when sending NULL messages. Signed-off-by: Douglas Anderson Acked-by: Thomas Gleixner --- (no changes since v1) drivers/irqchip/irq-qcom-mpm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-qcom-mpm.c b/drivers/irqchip/irq-qcom-mpm.c index 83f31ea657b7..5b79d95bf1fb 100644 --- a/drivers/irqchip/irq-qcom-mpm.c +++ b/drivers/irqchip/irq-qcom-mpm.c @@ -302,7 +302,7 @@ static int mpm_pd_power_off(struct generic_pm_domain *g= enpd) qcom_mpm_write(priv, MPM_REG_STATUS, i, 0); =20 /* Notify RPM to write vMPM into HW */ - ret =3D mbox_send_message(priv->mbox_chan, NULL); + ret =3D mbox_ring_doorbell(priv->mbox_chan); if (ret < 0) return ret; =20 --=20 2.53.0.273.g2a3d683680-goog