Hi,
On 10/21/21 11:29, Sanket Goswami wrote:
> Store the root port information in amd_pmc_probe() so that the
> information can be used across multiple routines.
>
> Signed-off-by: Sanket Goswami <Sanket.Goswami@xxxxxxx>
> ---
> Changes in v2:
> - Store the rdev info in amd_pmc_probe() as suggested by Hans.
Thank you, but there are still some issues, see below.
> drivers/platform/x86/amd-pmc.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/platform/x86/amd-pmc.c b/drivers/platform/x86/amd-pmc.c
> index 55f14bdfdbfd..502f37eaba1f 100644
> --- a/drivers/platform/x86/amd-pmc.c
> +++ b/drivers/platform/x86/amd-pmc.c
> @@ -119,6 +119,7 @@ struct amd_pmc_dev {
> u16 minor;
> u16 rev;
> struct device *dev;
> + struct pci_dev *rdev;
> struct mutex lock; /* generic mutex lock */
> #if IS_ENABLED(CONFIG_DEBUG_FS)
> struct dentry *dbgfs_dir;
> @@ -482,6 +483,7 @@ static int amd_pmc_probe(struct platform_device *pdev)
> return -ENODEV;
> }
>
> + dev->rdev = rdev;
> dev->cpu_id = rdev->device;
> err = pci_write_config_dword(rdev, AMD_PMC_SMU_INDEX_ADDRESS, AMD_PMC_BASE_ADDR_LO);
> if (err) {
> @@ -512,7 +514,6 @@ static int amd_pmc_probe(struct platform_device *pdev)
> }
>
> base_addr_hi = val & AMD_PMC_BASE_ADDR_LO_MASK;
> - pci_dev_put(dev->rdev);
The current code here actually reads:
pci_dev_put(rdev);
Note (rdev) not (dev->rdev). I don't know what you based this on, this is weird.
Also there are a bunch of error-exits from amd_pmc_probe() which not all
need a "pci_dev_put(rdev)" added to them before there "return ERROR;"
statement.
It would be best to add:
err_pci_dev_put:
pci_dev_put(rdev);
return err;
Add the end off the function (after the return 0;) and replace all
"return FOO" error-exits with:
err = <FOO>;
goto err_pci_dev_put;
}
Regards,
Hans
> base_addr = ((u64)base_addr_hi << 32 | base_addr_lo);
>
> dev->regbase = devm_ioremap(dev->dev, base_addr + AMD_PMC_BASE_ADDR_OFFSET,
> @@ -546,6 +547,7 @@ static int amd_pmc_remove(struct platform_device *pdev)
> struct amd_pmc_dev *dev = platform_get_drvdata(pdev);
>
> amd_pmc_dbgfs_unregister(dev);
> + pci_dev_put(dev->rdev);
> mutex_destroy(&dev->lock);
> return 0;
> }
>
