| Message ID | 20201001151821.27575-1-james.quinlan@broadcom.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v1] PCI: brcmstb: fix error return paths in probe() | expand |
On 10/1/2020 8:18 AM, Jim Quinlan wrote: > Fixes two cases where we were returning without calling > clk_disable_unprepare(). Although there is a common place to go on probe() > errors (the 'fail' label), one can only jump there after executing > brcm_pcie_setup(), so we have to add clk_disable_unprepare() calls to the > two error paths. > > Fixes: b98f52bc6495 ("PCI: brcmstb: Add control of rescal reset") > Reported-by: kernel test robot <lkp@intel.com> > Reported-by: Dan Carpenter <dan.carpenter@oracle.com> > Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com>
On Thu, 2020-10-01 at 11:18 -0400, Jim Quinlan wrote: > Fixes two cases where we were returning without calling > clk_disable_unprepare(). Although there is a common place to go on probe() > errors (the 'fail' label), one can only jump there after executing > brcm_pcie_setup(), so we have to add clk_disable_unprepare() calls to the > two error paths. > > Fixes: b98f52bc6495 ("PCI: brcmstb: Add control of rescal reset") > Reported-by: kernel test robot <lkp@intel.com> > Reported-by: Dan Carpenter <dan.carpenter@oracle.com> > Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com> > --- Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Thanks!
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index 6e7aa82a54a3..da2fefe80d47 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -1269,8 +1269,10 @@ static int brcm_pcie_probe(struct platform_device *pdev) return ret; } pcie->rescal = devm_reset_control_get_optional_shared(&pdev->dev, "rescal"); - if (IS_ERR(pcie->rescal)) + if (IS_ERR(pcie->rescal)) { + clk_disable_unprepare(pcie->clk); return PTR_ERR(pcie->rescal); + } ret = reset_control_deassert(pcie->rescal); if (ret) @@ -1279,6 +1281,7 @@ static int brcm_pcie_probe(struct platform_device *pdev) ret = brcm_phy_start(pcie); if (ret) { reset_control_assert(pcie->rescal); + clk_disable_unprepare(pcie->clk); return ret; }
Fixes two cases where we were returning without calling clk_disable_unprepare(). Although there is a common place to go on probe() errors (the 'fail' label), one can only jump there after executing brcm_pcie_setup(), so we have to add clk_disable_unprepare() calls to the two error paths. Fixes: b98f52bc6495 ("PCI: brcmstb: Add control of rescal reset") Reported-by: kernel test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jim Quinlan <james.quinlan@broadcom.com> --- drivers/pci/controller/pcie-brcmstb.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)