Commit 32fe6142 authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela

ALSA: mtpav - Fix race in probe

Ingo reported Oops at probing mtpav driver.  It's a race between
the irq handler and the rawmidi instance registration.

This patch fixes the order of registration to avoid the race.
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Tested-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarJaroslav Kysela <perex@perex.cz>
parent 59b3db6c
...@@ -715,6 +715,10 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev) ...@@ -715,6 +715,10 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
card->private_free = snd_mtpav_free; card->private_free = snd_mtpav_free;
err = snd_mtpav_get_RAWMIDI(mtp_card);
if (err < 0)
goto __error;
err = snd_mtpav_get_ISA(mtp_card); err = snd_mtpav_get_ISA(mtp_card);
if (err < 0) if (err < 0)
goto __error; goto __error;
...@@ -724,10 +728,6 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev) ...@@ -724,10 +728,6 @@ static int __devinit snd_mtpav_probe(struct platform_device *dev)
snprintf(card->longname, sizeof(card->longname), snprintf(card->longname, sizeof(card->longname),
"MTPAV on parallel port at 0x%lx", port); "MTPAV on parallel port at 0x%lx", port);
err = snd_mtpav_get_RAWMIDI(mtp_card);
if (err < 0)
goto __error;
snd_mtpav_portscan(mtp_card); snd_mtpav_portscan(mtp_card);
snd_card_set_dev(card, &dev->dev); snd_card_set_dev(card, &dev->dev);
......
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