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    Subject[PATCH] sound: Fix warnings relating to ignored return value in snd_card_register
    Do not ignore the return of 'device_create_file' in
    'snd_card_register' and thereby fixing the following warnings:

    sound/core/init.c: In function 'snd_card_register':
    sound/core/init.c:640: warning: ignoring return value of
    'device_create_file', declared with attribute warn_unused_result
    sound/core/init.c:641: warning: ignoring return value of
    'device_create_file', declared with attribute warn_unused_result

    Signed-off-by: Hannes Eder <hannes@hanneseder.net>
    ---
    sound/core/init.c | 6 ++++--
    1 files changed, 4 insertions(+), 2 deletions(-)

    diff --git a/sound/core/init.c b/sound/core/init.c
    index af1e407..814d834 100644
    --- a/sound/core/init.c
    +++ b/sound/core/init.c
    @@ -637,8 +637,10 @@ int snd_card_register(struct snd_card *card)
    #endif
    #ifndef CONFIG_SYSFS_DEPRECATED
    if (card->card_dev) {
    - device_create_file(card->card_dev, &card_id_attrs);
    - device_create_file(card->card_dev, &card_number_attrs);
    + if ((err = device_create_file(card->card_dev, &card_id_attrs)) < 0)
    + return err;
    + if ((err = device_create_file(card->card_dev, &card_number_attrs)) < 0)
    + return err;
    }
    #endif
    return 0;

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