linux-kernel - [PATCH 5.4 101/215] bus: ti-sysc: Do not disable on suspend for no-idle

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Message-Id: <20200720152825.011824505@linuxfoundation.org>
Date:   Mon, 20 Jul 2020 17:36:23 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Grygorii Strashko <grygorii.strashko@...com>,
        Tony Lindgren <tony@...mide.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 101/215] bus: ti-sysc: Do not disable on suspend for no-idle

From: Tony Lindgren <tony@...mide.com>

[ Upstream commit a55de412228cc5a2b4bf8d2a09849898102633e2 ]

If we have "ti,no-idle" specified for a module we must not disable
the the module on suspend to keep things backwards compatible.

Fixes: 386cb76681ca ("bus: ti-sysc: Handle missed no-idle property in addition to no-idle-on-init")
Reported-by: Grygorii Strashko <grygorii.strashko@...com>
Signed-off-by: Tony Lindgren <tony@...mide.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/bus/ti-sysc.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 76e749dfc4fd1..f8bc052cd853a 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -1245,7 +1245,8 @@ static int __maybe_unused sysc_noirq_suspend(struct device *dev)
 
 	ddata = dev_get_drvdata(dev);
 
-	if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+	if (ddata->cfg.quirks &
+	    (SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_NO_IDLE))
 		return 0;
 
 	return pm_runtime_force_suspend(dev);
@@ -1257,7 +1258,8 @@ static int __maybe_unused sysc_noirq_resume(struct device *dev)
 
 	ddata = dev_get_drvdata(dev);
 
-	if (ddata->cfg.quirks & SYSC_QUIRK_LEGACY_IDLE)
+	if (ddata->cfg.quirks &
+	    (SYSC_QUIRK_LEGACY_IDLE | SYSC_QUIRK_NO_IDLE))
 		return 0;
 
 	return pm_runtime_force_resume(dev);
-- 
2.25.1