ALSA: hda - Force polling mode on CFL for fixing codec communication

[mirror_ubuntu-artful-kernel.git] / sound / pci / hda / hda_intel.c

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 5ae8ddab641220f2ebb0a1e85438302e50d2b861..f23db5f11d36fd64aa31ee0103753afa39b70ba5 100644 (file)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -371,6 +371,7 @@ enum {
                                        ((pci)->device == 0x160c))
 
 #define IS_BXT(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0x5a98)
+#define IS_CFL(pci) ((pci)->vendor == 0x8086 && (pci)->device == 0xa348)
 
 static char *driver_short_names[] = {
        [AZX_DRIVER_ICH] = "HDA Intel",
@@ -1740,6 +1741,10 @@ static int azx_create(struct snd_card *card, struct pci_dev *pci,
        else
                chip->bdl_pos_adj = bdl_pos_adj[dev];
 
+       /* Workaround for a communication error on CFL (bko#199007) */
+       if (IS_CFL(pci))
+               chip->polling_mode = 1;
+
        err = azx_bus_init(chip, model[dev], &pci_hda_io_ops);
        if (err < 0) {
                kfree(hda);