Just for safety. azx_init_cmd_io() and azx_free_cmd_io() may be called when switching to single command mode.
Signed-off-by: Wu Fengguang fengguang.wu@intel.com --- sound/pci/hda/hda_intel.c | 4 ++++ 1 file changed, 4 insertions(+)
--- sound-2.6.orig/sound/pci/hda/hda_intel.c +++ sound-2.6/sound/pci/hda/hda_intel.c @@ -520,6 +520,7 @@ static int azx_alloc_cmd_io(struct azx *
static void azx_init_cmd_io(struct azx *chip) { + spin_lock_irq(&chip->reg_lock); /* CORB set up */ chip->corb.addr = chip->rb.addr; chip->corb.buf = (u32 *)chip->rb.area; @@ -551,13 +552,16 @@ static void azx_init_cmd_io(struct azx * azx_writew(chip, RINTCNT, 1); /* enable rirb dma and response irq */ azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN); + spin_unlock_irq(&chip->reg_lock); }
static void azx_free_cmd_io(struct azx *chip) { + spin_lock_irq(&chip->reg_lock); /* disable ringbuffer DMAs */ azx_writeb(chip, RIRBCTL, 0); azx_writeb(chip, CORBCTL, 0); + spin_unlock_irq(&chip->reg_lock); }
static unsigned int azx_command_addr(u32 cmd)