This is a note to let you know that I've just added the patch titled
spi: zynqmp-gqspi: fix clock imbalance on probe failure
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
spi-zynqmp-gqspi-fix-clock-imbalance-on-probe-failur.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bc5eee6846668dfa31bf34227ce977ed041fd14d
Author: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Thu Jun 22 10:24:35 2023 +0200
spi: zynqmp-gqspi: fix clock imbalance on probe failure
[ Upstream commit 1527b076ae2cb6a9c590a02725ed39399fcad1cf ]
Make sure that the device is not runtime suspended before explicitly
disabling the clocks on probe failure and on driver unbind to avoid a
clock enable-count imbalance.
Fixes: 9e3a000362ae ("spi: zynqmp: Add pm runtime support")
Cc: stable@xxxxxxxxxxxxxxx # 4.19
Cc: Naga Sureshkumar Relli <naga.sureshkumar.relli@xxxxxxxxxx>
Cc: Shubhrajyoti Datta <shubhrajyoti.datta@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/Message-Id: <20230622082435.7873-1-johan+linaro@xxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c
index 876a41c5d1664..f2dcd1ae77c7d 100644
--- a/drivers/spi/spi-zynqmp-gqspi.c
+++ b/drivers/spi/spi-zynqmp-gqspi.c
@@ -1218,9 +1218,9 @@ static int zynqmp_qspi_probe(struct platform_device *pdev)
return 0;
clk_dis_all:
- pm_runtime_put_sync(&pdev->dev);
- pm_runtime_set_suspended(&pdev->dev);
pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
clk_disable_unprepare(xqspi->refclk);
clk_dis_pclk:
clk_disable_unprepare(xqspi->pclk);
@@ -1244,11 +1244,15 @@ static void zynqmp_qspi_remove(struct platform_device *pdev)
{
struct zynqmp_qspi *xqspi = platform_get_drvdata(pdev);
+ pm_runtime_get_sync(&pdev->dev);
+
zynqmp_gqspi_write(xqspi, GQSPI_EN_OFST, 0x0);
+
+ pm_runtime_disable(&pdev->dev);
+ pm_runtime_put_noidle(&pdev->dev);
+ pm_runtime_set_suspended(&pdev->dev);
clk_disable_unprepare(xqspi->refclk);
clk_disable_unprepare(xqspi->pclk);
- pm_runtime_set_suspended(&pdev->dev);
- pm_runtime_disable(&pdev->dev);
}
static const struct of_device_id zynqmp_qspi_of_match[] = {
