Re: [PATCH] driver: pmc_atom: free pmc->regmap in pmc_setup_dev

[Dan Carpenter <dan.carpenter@oracle.com>]

On Tue, Nov 30, 2021 at 10:35:25PM +0800, Dongliang Mu wrote:
> Smatch reports:
> 
> drivers/platform/x86/pmc_atom.c:496
> pmc_setup_dev() warn: 'pmc->regmap' not released on lines: 496.
> 
> Fix this by deallocating pm->regmap.
> 
> CC: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
> ---
>  drivers/platform/x86/pmc_atom.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
> index a9d2a4b98e57..95ba108ed716 100644
> --- a/drivers/platform/x86/pmc_atom.c
> +++ b/drivers/platform/x86/pmc_atom.c
> @@ -492,6 +492,7 @@ static int pmc_setup_dev(struct pci_dev *pdev, const struct pci_device_id *ent)
>  		dev_warn(&pdev->dev, "platform clocks register failed: %d\n",
>  			 ret);
>  
> +	iounmap(pmc->regmap);

This releases it on the success path so it will break the driver.

regards,
dan carpenter

>  	pmc->init = true;
>  	return ret;
>  }
> -- 
> 2.25.1