Re: [PATCH v3 09/26] sd/milkymist-memcard: Plug minor memory leak in realize

[Philippe Mathieu-Daudé]

On 6/30/20 11:03 AM, Markus Armbruster wrote:
> milkymist_memcard_realize() leaks an Error object when realization of
> its "sd-card" device fails.  Quite harmless, since we only ever
> realize this once, in milkymist_init() via milkymist_memcard_create().
> 
> Plug the leak.
> 
> Fixes: 3d0369ba499866cc6a839f71212d97876500762d
> Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
> Cc: Michael Walle <michael@walle.cc>
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---
>  hw/sd/milkymist-memcard.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/hw/sd/milkymist-memcard.c b/hw/sd/milkymist-memcard.c
> index 482e97191e..afdb8aa0c0 100644
> --- a/hw/sd/milkymist-memcard.c
> +++ b/hw/sd/milkymist-memcard.c
> @@ -280,9 +280,8 @@ static void milkymist_memcard_realize(DeviceState *dev, 
> Error **errp)
>      blk = dinfo ? blk_by_legacy_dinfo(dinfo) : NULL;
>      carddev = qdev_new(TYPE_SD_CARD);
>      qdev_prop_set_drive(carddev, "drive", blk);
> -    qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err);
> -    if (err) {
> -        error_setg(errp, "failed to init SD card: %s", 
> error_get_pretty(err));
> +    if (!qdev_realize_and_unref(carddev, BUS(&s->sdbus), &err)) {
> +        error_propagate_prepend(errp, err, "failed to init SD card: %s");
>          return;
>      }
>      s->enabled = blk && blk_is_inserted(blk);
> 

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>