Takashi Iwai f495222e28 ALSA: hda - Register irq handler after the chip initialization ... Currently the IRQ handler in HD-audio controller driver is registered before the chip initialization. That is, we have some window opened between the azx_acquire_irq() call and the CORB/RIRB setup. If an interrupt is triggered in this small window, the IRQ handler may access to the uninitialized RIRB buffer, which leads to a NULL dereference Oops. This is usually no big problem since most of Intel chips do register the IRQ via MSI, and we've already fixed the order of the IRQ enablement and the CORB/RIRB setup in the former commit b61749a89f ("sound: enable interrupt after dma buffer initialization"), hence the IRQ won't be triggered in that room. However, some platforms use a shared IRQ, and this may allow the IRQ trigger by another source. Another possibility is the kdump environment: a stale interrupt might be present in there, the IRQ handler can be falsely triggered as well. For covering this small race, let's move the azx_acquire_irq() call after hda_intel_init_chip() call. Although this is a bit radical change, it can cover more widely than checking the CORB/RIRB setup locally in the callee side. Reported-by: Liwei Song <liwei.song@windriver.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>		2019-04-30 12:18:28 +02:00
..
ac97
aoa
arm
atmel
core	ALSA: core: Don't refer to snd_cards array directly	2019-04-17 07:16:15 +02:00
drivers	ALSA: aloop: Support S24 sample formats	2019-03-25 16:39:18 +01:00
firewire	ALSA: firewire-lib: use 8 byte header for IR context to get isochronous cycle	2019-03-18 14:50:35 +01:00
hda	ALSA: hda: Initialize ext-bus-specific fields in snd_hdac_bus_init(), too	2019-04-13 10:10:26 +02:00
i2c
isa	ALSA: gus: fix misuse of %x	2019-04-28 08:25:18 +02:00
mips
oss
parisc
pci	ALSA: hda - Register irq handler after the chip initialization	2019-04-30 12:18:28 +02:00
pcmcia
ppc	ALSA: ps3: Remove set but not used variables 'start_vaddr' and 'pcm_index'	2019-04-17 21:17:54 +02:00
sh
soc	ASoC: hdac_hda: overwrite hdev type to HDA_DEV_ASOC	2019-04-29 09:12:09 +02:00
sparc
spi
synth	ALSA: emux: Add support of loading GUS-patch	2019-03-26 17:32:02 +01:00
usb	ALSA: usx2y: fix a double free bug	2019-04-29 19:56:41 +02:00
x86
xen	ALSA: xen-front: Do not use stream buffer size before it is set	2019-04-04 14:44:18 +02:00
ac97_bus.c
Kconfig
last.c	ALSA: core: Don't refer to snd_cards array directly	2019-04-17 07:16:15 +02:00
Makefile
sound_core.c