diff options
| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-11-27 13:52:54 -0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:42:16 -0200 |
| commit | 0731160aca15df5882387e07d61671e6746c658f (patch) | |
| tree | 0c6945f465424337ee44fa9dcc28e8eefa878ad6 | |
| parent | 1ca31892e3af05ad3a72769e3c922cca3cde4f9d (diff) | |
em28xx: don't load audio modules when AC97 is mis-detected
With em2800 hardware, AC97 hardware can be detected even when it doesn't
exist. If, after probing for AC97, the driver won't find a companion
chip, simply prevents the load of the audio modules.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index 33586004eb4..3f86d36dff2 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -533,8 +533,15 @@ int em28xx_audio_setup(struct em28xx *dev) vid1 = em28xx_read_ac97(dev, AC97_VENDOR_ID1); if (vid1 < 0) { - /* Device likely doesn't support AC97 */ + /* + * Device likely doesn't support AC97 + * Note: (some) em2800 devices without eeprom reports 0x91 on + * CHIPCFG register, even not having an AC97 chip + */ em28xx_warn("AC97 chip type couldn't be determined\n"); + dev->audio_mode.ac97 = EM28XX_NO_AC97; + dev->has_alsa_audio = 0; + dev->audio_mode.has_audio = 0; goto init_audio; } |