linux-kernel - [PATCH] spi: zynqmp-gqspi: Undo runtime PM changes at driver exit time

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20240920091135.2741574-1-ruanjinjie@huawei.com>
Date: Fri, 20 Sep 2024 17:11:35 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <broonie@...nel.org>, <michal.simek@....com>,
	<naga.sureshkumar.relli@...inx.com>, <shubhrajyoti.datta@...inx.com>,
	<linux-spi@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH] spi: zynqmp-gqspi: Undo runtime PM changes at driver exit time

It's important to undo pm_runtime_use_autosuspend() with
pm_runtime_dont_use_autosuspend() at driver exit time.

So, call pm_runtime_dont_use_autosuspend() at driver exit time
to fix it.

Fixes: 9e3a000362ae ("spi: zynqmp: Add pm runtime support")
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
 drivers/spi/spi-zynqmp-gqspi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index fcd0ca996684..b9df39e06e7c 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1351,6 +1351,7 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 
 clk_dis_all:
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	clk_disable_unprepare(xqspi->refclk);
@@ -1379,6 +1380,7 @@ static void zynqmp_qspi_remove(struct platform_device *pdev)
 	zynqmp_gqspi_write(xqspi, GQSPI_EN_OFST, 0x0);
 
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_dont_use_autosuspend(&pdev->dev);
 	pm_runtime_put_noidle(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	clk_disable_unprepare(xqspi->refclk);
-- 
2.34.1