Re: [PATCH] nvmem: core: Prevent memory leak when device is unregistered

Andrey Smirnov
2017-05-16T21:34:08Z

On Mon, May 15, 2017 at 4:13 AM, Mika Westerberg
<mika.westerberg@linux.intel.com> wrote:
> The nvmem_unregister() calls device_del() for the device but forgets to
> call put_device() to actually release the device object which causes
> that memory to be leaked.
>
> Fix this by calling device_unregister() for the device intead which also
> calls put_device() for the device releasing it eventually.
>
> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
> ---

FWIW, I submitted similar fix for this here:

lkml.kernel.org/r/20170418142454.23921-2-andrew.smirnov@gmail.com

> drivers/nvmem/core.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/nvmem/core.c b/drivers/nvmem/core.c
> index 8c830a80a648..112c8072e0f3 100644
> --- a/drivers/nvmem/core.c
> +++ b/drivers/nvmem/core.c
> @@ -528,7 +528,7 @@ int nvmem_unregister(struct nvmem_device *nvmem)
> device_remove_bin_file(nvmem->base_dev, &nvmem->eeprom);
>
> nvmem_device_remove_all_cells(nvmem);
> - device_del(&nvmem->dev);
> + device_unregister(&nvmem->dev);
>
> return 0;
> }
> --
> 2.11.0
>