[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>
diff --git a/sound/pci/cs46xx/cs46xx_lib.c b/sound/pci/cs46xx/cs46xx_lib.c
index 87ddffc..e214e56 100644
--- a/sound/pci/cs46xx/cs46xx_lib.c
+++ b/sound/pci/cs46xx/cs46xx_lib.c
@@ -2772,6 +2772,9 @@
if (chip->irq >= 0)
free_irq(chip->irq, chip);
+ if (chip->active_ctrl)
+ chip->active_ctrl(chip, -chip->amplifier);
+
for (idx = 0; idx < 5; idx++) {
struct snd_cs46xx_region *region = &chip->region.idx[idx];
if (region->remap_addr)
@@ -2779,9 +2782,6 @@
release_and_free_resource(region->resource);
}
- if (chip->active_ctrl)
- chip->active_ctrl(chip, -chip->amplifier);
-
#ifdef CONFIG_SND_CS46XX_NEW_DSP
if (chip->dsp_spos_instance) {
cs46xx_dsp_spos_destroy(chip);