[alsa-devel] [PATCH 1/1] ice1712: check if snd card loaded, if not do not proceed
Takashi Iwai
tiwai at suse.de
Fri Jul 11 12:06:39 CEST 2014
At Thu, 10 Jul 2014 23:19:37 -0500,
Konstantinos Tsimpoukas wrote:
>
> Just adding a simple if statement, which
> verifies if actually card is loaded, if not
> does not continue with the execution
> of the snd_card_free.
It's already referenced by ice, so a NULL check must be peformed at
first. But, basically card is always non-NULL. The remove callback
is called only for objects that was properly bound with probe
callback. snd_ice1712_probe() always sets the card pointer when it
succeeds.
thanks,
Takashi
> Signed-off-by: Konstantinos Tsimpoukas <kostaslinuxxx at gmail.com>
> ---
> sound/pci/ice1712/ice1712.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/sound/pci/ice1712/ice1712.c b/sound/pci/ice1712/ice1712.c
> index d9b9e45..431096b 100644
> --- a/sound/pci/ice1712/ice1712.c
> +++ b/sound/pci/ice1712/ice1712.c
> @@ -2819,7 +2819,8 @@ static void snd_ice1712_remove(struct pci_dev *pci)
>
> if (ice->card_info && ice->card_info->chip_exit)
> ice->card_info->chip_exit(ice);
> - snd_card_free(card);
> + if (card)
> + snd_card_free(card);
> }
>
> #ifdef CONFIG_PM_SLEEP
> --
> 1.9.1
>
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