While registering pardev, the irq_func was also registered. As a result when we tried to probe for the card, an interrupt was generated and in the ISR we tried to dereference private_data. But private_data is still NULL as we have not yet done snd_mts64_create(). Lets probe for the card after mts64 is created.
Reported-by: Fengguang Wu fengguang.wu@intel.com Fixes: 94a573500d48 ("ALSA: mts64: use new parport device model") Signed-off-by: Sudip Mukherjee sudip.mukherjee@codethink.co.uk --- sound/drivers/mts64.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/sound/drivers/mts64.c b/sound/drivers/mts64.c index c76bd87..fd4d18d 100644 --- a/sound/drivers/mts64.c +++ b/sound/drivers/mts64.c @@ -964,11 +964,6 @@ static int snd_mts64_probe(struct platform_device *pdev) err = -EIO; goto free_pardev; } - err = mts64_probe(p); - if (err) { - err = -EIO; - goto release_pardev; - }
if ((err = snd_mts64_create(card, pardev, &mts)) < 0) { snd_printd("Cannot create main component\n"); @@ -976,6 +971,12 @@ static int snd_mts64_probe(struct platform_device *pdev) } card->private_data = mts; card->private_free = snd_mts64_card_private_free; + + err = mts64_probe(p); + if (err) { + err = -EIO; + goto __err; + } if ((err = snd_mts64_rawmidi_create(card)) < 0) { snd_printd("Creating Rawmidi component failed\n");