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| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2016-02-29 17:43:30 +0530 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-02-29 13:23:46 +0100 |
| commit | 0bbf7e025fc89ded4925daeaf3619722b13b12d4 (patch) | |
| tree | aec62ff32406b1f15e893e63e2cad57941d11415 /sound/drivers/mts64.c | |
| parent | 1387e3eafa94837342b044b429b79830998009ac (diff) | |
| download | linux-0bbf7e025fc89ded4925daeaf3619722b13b12d4.tar.gz linux-0bbf7e025fc89ded4925daeaf3619722b13b12d4.tar.bz2 linux-0bbf7e025fc89ded4925daeaf3619722b13b12d4.zip | |
ALSA: mts64: fix NULL pointer dereference
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/drivers/mts64.c')
| -rw-r--r-- | sound/drivers/mts64.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/sound/drivers/mts64.c b/sound/drivers/mts64.c index c76bd87071c6..fd4d18df84d3 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"); |