* [PATCH v1] PCI: brcmstb: fix error return paths in probe()
@ 2020-10-01 15:18 Jim Quinlan
2020-10-01 18:51 ` Florian Fainelli
2020-10-08 9:58 ` Nicolas Saenz Julienne
0 siblings, 2 replies; 3+ messages in thread
From: Jim Quinlan @ 2020-10-01 15:18 UTC (permalink / raw)
To: Dan Carpenter, Lorenzo Pieralisi, Nicolas Saenz Julienne,
bcm-kernel-feedback-list, james.quinlan
Cc: Rob Herring, Bjorn Helgaas, Florian Fainelli, Jim Quinlan,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS, open list
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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(-)
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;
}
--
2.17.1
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^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH v1] PCI: brcmstb: fix error return paths in probe()
2020-10-01 15:18 [PATCH v1] PCI: brcmstb: fix error return paths in probe() Jim Quinlan
@ 2020-10-01 18:51 ` Florian Fainelli
2020-10-08 9:58 ` Nicolas Saenz Julienne
1 sibling, 0 replies; 3+ messages in thread
From: Florian Fainelli @ 2020-10-01 18:51 UTC (permalink / raw)
To: Jim Quinlan, Dan Carpenter, Lorenzo Pieralisi,
Nicolas Saenz Julienne, bcm-kernel-feedback-list
Cc: Rob Herring, Bjorn Helgaas, Jim Quinlan,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS, open list
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>
--
Florian
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH v1] PCI: brcmstb: fix error return paths in probe()
2020-10-01 15:18 [PATCH v1] PCI: brcmstb: fix error return paths in probe() Jim Quinlan
2020-10-01 18:51 ` Florian Fainelli
@ 2020-10-08 9:58 ` Nicolas Saenz Julienne
1 sibling, 0 replies; 3+ messages in thread
From: Nicolas Saenz Julienne @ 2020-10-08 9:58 UTC (permalink / raw)
To: Jim Quinlan, Dan Carpenter, Lorenzo Pieralisi, bcm-kernel-feedback-list
Cc: Rob Herring, Bjorn Helgaas, Florian Fainelli, Jim Quinlan,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
moderated list:BROADCOM BCM2711/BCM2835 ARM ARCHITECTURE,
open list:PCI NATIVE HOST BRIDGE AND ENDPOINT DRIVERS, open list
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!
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