linux-kernel - [PATCH v10 16/33] remoteproc: k3-dsp: Correct Reset deassert logic for devices w/o lresets

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Message-ID: <20250417182001.3903905-17-b-padhi@ti.com>
Date: Thu, 17 Apr 2025 23:49:44 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <andersson@...nel.org>, <mathieu.poirier@...aro.org>
CC: <afd@...com>, <hnagalla@...com>, <u-kumar1@...com>, <jm@...com>,
        <jan.kiszka@...mens.com>, <christophe.jaillet@...adoo.fr>,
        <jkangas@...hat.com>, <eballetbo@...hat.com>, <b-padhi@...com>,
        <linux-remoteproc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v10 16/33] remoteproc: k3-dsp: Correct Reset deassert logic for devices w/o lresets

The k3_dsp_rproc_release() function erroneously deasserts the local
reset even for devices which do not support it. Even though it results
in a no-operation, Update the logic to explicitly deassert the local
reset for devices that support it and only the global reset for those
that do not.

Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
v10: Changelog:
1. Split [v9 13/26] into [v10 16/33] and [v10 17/33] patches. 

Link to v9:
https://lore.kernel.org/all/20250317120622.1746415-14-b-padhi@ti.com/

 drivers/remoteproc/ti_k3_dsp_remoteproc.c | 26 +++++++++++------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git a/drivers/remoteproc/ti_k3_dsp_remoteproc.c b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
index f8a5282df5b71..b10b35326bd6b 100644
--- a/drivers/remoteproc/ti_k3_dsp_remoteproc.c
+++ b/drivers/remoteproc/ti_k3_dsp_remoteproc.c
@@ -30,24 +30,22 @@ static int k3_dsp_rproc_release(struct k3_rproc *kproc)
 	struct device *dev = kproc->dev;
 	int ret;
 
-	if (kproc->data->uses_lreset)
-		goto lreset;
+	if (kproc->data->uses_lreset) {
+		ret = reset_control_deassert(kproc->reset);
+		if (ret) {
+			dev_err(dev, "local-reset deassert failed, (%pe)\n", ERR_PTR(ret));
+			if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
+								  kproc->ti_sci_id))
+				dev_warn(dev, "module-reset assert back failed\n");
+		}
 
-	ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
-						    kproc->ti_sci_id);
-	if (ret) {
-		dev_err(dev, "module-reset deassert failed (%pe)\n", ERR_PTR(ret));
 		return ret;
 	}
 
-lreset:
-	ret = reset_control_deassert(kproc->reset);
-	if (ret) {
-		dev_err(dev, "local-reset deassert failed, (%pe)\n", ERR_PTR(ret));
-		if (kproc->ti_sci->ops.dev_ops.put_device(kproc->ti_sci,
-							  kproc->ti_sci_id))
-			dev_warn(dev, "module-reset assert back failed\n");
-	}
+	ret = kproc->ti_sci->ops.dev_ops.get_device(kproc->ti_sci,
+						    kproc->ti_sci_id);
+	if (ret)
+		dev_err(dev, "module-reset deassert failed (%pe)\n", ERR_PTR(ret));
 
 	return ret;
 }
-- 
2.34.1