Re: [PATCH] acpi/nfit: unlock on error in scrub_show()

[Ira Weiny]

On Fri, Oct 18, 2019 at 03:35:34PM +0300, Dan Carpenter wrote:
> We change the locking in this function and forgot to update this error
> path so we are accidentally still holding the "dev->lockdep_mutex".
> 
> Fixes: 87a30e1f05d7 ("driver-core, libnvdimm: Let device subsystems add local lockdep coverage")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>

> ---
>  drivers/acpi/nfit/core.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
> index 1413324982f0..14e68f202f81 100644
> --- a/drivers/acpi/nfit/core.c
> +++ b/drivers/acpi/nfit/core.c
> @@ -1322,7 +1322,7 @@ static ssize_t scrub_show(struct device *dev,
>  	nfit_device_lock(dev);
>  	nd_desc = dev_get_drvdata(dev);
>  	if (!nd_desc) {
> -		device_unlock(dev);
> +		nfit_device_unlock(dev);
>  		return rc;
>  	}
>  	acpi_desc = to_acpi_desc(nd_desc);
> -- 
> 2.20.1
>