linux-kernel - [PATCH] spi: spi-zynqmp-gqspi: Fix runtime PM imbalance in zynqmp_qspi

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Date:   Thu,  8 Apr 2021 17:25:59 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Mark Brown <broonie@...nel.org>,
        Michal Simek <michal.simek@...inx.com>,
        linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] spi: spi-zynqmp-gqspi: Fix runtime PM imbalance in zynqmp_qspi_probe

When platform_get_irq() fails, a pairing PM usage counter
increment is needed to keep the counter balanced. It's the
same for the following error paths.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/spi/spi-zynqmp-gqspi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index c8fa6ee18ae7..95963a2de64a 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1197,6 +1197,7 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
 	return 0;
 
 clk_dis_all:
+	pm_runtime_get_noresume(&pdev->dev);
 	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
 	clk_disable_unprepare(xqspi->refclk);
-- 
2.17.1