Am Donnerstag, 1. Juni 2017, 15:51:45 CEST schrieb Arvind Yadav: > clk_prepare_enable() can fail here and we must check its return value. > > Signed-off-by: Arvind Yadav <arvind.yadav.cs@xxxxxxxxx> looks good, but you may want to include Bjorn Helgaas <bhelgaas@xxxxxxxxxx> who is the maintainer of the pci subsystem and would be the one to apply your patch. Aynway, the patch itself looks good to me Reviewed-by: Heiko Stuebner <heiko@xxxxxxxxx> Cheers Heiko > --- > drivers/pci/host/pcie-rockchip.c | 34 ++++++++++++++++++++++++++++------ > 1 file changed, 28 insertions(+), 6 deletions(-) > > diff --git a/drivers/pci/host/pcie-rockchip.c b/drivers/pci/host/pcie-rockchip.c > index 0e020b6..0a248cd 100644 > --- a/drivers/pci/host/pcie-rockchip.c > +++ b/drivers/pci/host/pcie-rockchip.c > @@ -1259,24 +1259,46 @@ static int __maybe_unused rockchip_pcie_resume_noirq(struct device *dev) > struct rockchip_pcie *rockchip = dev_get_drvdata(dev); > int err; > > - clk_prepare_enable(rockchip->clk_pcie_pm); > - clk_prepare_enable(rockchip->hclk_pcie); > - clk_prepare_enable(rockchip->aclk_perf_pcie); > - clk_prepare_enable(rockchip->aclk_pcie); > + err = clk_prepare_enable(rockchip->clk_pcie_pm); > + if (err) > + goto err_pcie_pm; > + > + err = clk_prepare_enable(rockchip->hclk_pcie); > + if (err) > + goto err_hclk_pcie; > + > + err = clk_prepare_enable(rockchip->aclk_perf_pcie); > + if (err) > + goto err_aclk_perf_pcie; > + > + err = clk_prepare_enable(rockchip->aclk_pcie); > + if (err) > + goto err_aclk_pcie; > > err = rockchip_pcie_init_port(rockchip); > if (err) > - return err; > + goto err_pcie_resume; > > err = rockchip_cfg_atu(rockchip); > if (err) > - return err; > + goto err_pcie_resume; > > /* Need this to enter L1 again */ > rockchip_pcie_update_txcredit_mui(rockchip); > rockchip_pcie_enable_interrupts(rockchip); > > return 0; > + > +err_pcie_resume: > + clk_disable_unprepare(rockchip->aclk_pcie); > +err_aclk_pcie: > + clk_disable_unprepare(rockchip->aclk_perf_pcie); > +err_aclk_perf_pcie: > + clk_disable_unprepare(rockchip->hclk_pcie); > +err_hclk_pcie: > + clk_disable_unprepare(rockchip->clk_pcie_pm); > +err_pcie_pm: > + return err; > } > > static int rockchip_pcie_probe(struct platform_device *pdev) >
