Hans Zhang 8c839e71c4 PCI: cadence: Fix runtime atomic count underflow ...

[ Upstream commit 8805f32a96 ]

If the call to pci_host_probe() in cdns_pcie_host_setup() fails, PM
runtime count is decremented in the error path using pm_runtime_put_sync().
But the runtime count is not incremented by this driver, but only by the
callers (cdns_plat_pcie_probe/j721e_pcie_probe). And the callers also
decrement the runtime PM count in their error path. So this leads to the
below warning from the PM core:

	"runtime PM usage count underflow!"

So fix it by getting rid of pm_runtime_put_sync() in the error path and
directly return the errno.

Fixes: 49e427e6bd ("Merge branch 'pci/host-probe-refactor'")
Signed-off-by: Hans Zhang <18255117159@163.com>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://patch.msgid.link/20250419133058.162048-1-18255117159@163.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-06-19 15:32:09 +02:00

..

cadence

PCI: cadence: Fix runtime atomic count underflow

2025-06-19 15:32:09 +02:00

dwc

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mobiveil

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plda

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Kconfig

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Makefile

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pci-aardvark.c

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pci-ftpci100.c

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pci-host-common.c

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pci-host-generic.c

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pci-hyperv-intf.c

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pci-hyperv.c

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pci-ixp4xx.c

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pci-loongson.c

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pci-mvebu.c

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pci-rcar-gen2.c

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pci-tegra.c

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pci-thunder-ecam.c

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pci-thunder-pem.c

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pci-v3-semi.c

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pci-versatile.c

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pci-xgene-msi.c

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pci-xgene.c

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pcie-altera-msi.c

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pcie-altera.c

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pcie-hisi-error.c

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pcie-iproc-bcma.c

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pcie-iproc-msi.c

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pcie-iproc-platform.c

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pcie-iproc.c

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pcie-iproc.h

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pcie-mediatek-gen3.c

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pcie-mediatek.c

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pcie-mt7621.c

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pcie-rcar-ep.c

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pcie-rcar-host.c

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pcie-rcar.c

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pcie-rcar.h

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pcie-rockchip-ep.c

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pcie-rockchip-host.c

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pcie-rockchip.c

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pcie-rockchip.h

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pcie-xilinx-common.h

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pcie-xilinx-cpm.c

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pcie-xilinx-dma-pl.c

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pcie-xilinx-nwl.c

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pcie-xilinx.c

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vmd.c

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