diff options
| author | Takashi Iwai <tiwai@suse.de> | 2008-04-22 17:28:11 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2008-04-24 12:00:41 +0200 |
| commit | ebf029da38829ede6b53ac8a5ad45b149064ea16 (patch) | |
| tree | aebf6bddd245a874577fc321978b3f7137e8ac39 /sound/pci/echoaudio | |
| parent | 6b9a9b329640b7e8143df7b2782884ea758650f7 (diff) | |
[ALSA] Fix possible races at free_irq in PCI drivers
The irq handler of PCI drivers must be released before releasing other
resources since the handler for a shared irq can be still called and
may access the freed resource again.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/echoaudio')
| -rw-r--r-- | sound/pci/echoaudio/echoaudio.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/pci/echoaudio/echoaudio.c b/sound/pci/echoaudio/echoaudio.c index 90ec090792ba..e16dc92e82fb 100644 --- a/sound/pci/echoaudio/echoaudio.c +++ b/sound/pci/echoaudio/echoaudio.c @@ -1852,15 +1852,16 @@ static irqreturn_t snd_echo_interrupt(int irq, void *dev_id) static int snd_echo_free(struct echoaudio *chip) { DE_INIT(("Stop DSP...\n")); - if (chip->comm_page) { + if (chip->comm_page) rest_in_peace(chip); - snd_dma_free_pages(&chip->commpage_dma_buf); - } DE_INIT(("Stopped.\n")); if (chip->irq >= 0) free_irq(chip->irq, chip); + if (chip->comm_page) + snd_dma_free_pages(&chip->commpage_dma_buf); + if (chip->dsp_registers) iounmap(chip->dsp_registers); |