diff options
| author | Francisco Jerez <currojerez@riseup.net> | 2010-06-19 13:54:48 +0200 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2010-07-13 10:13:06 +1000 |
| commit | 3af76454a70cd09d8e3ede94ee50a35c772ba439 (patch) | |
| tree | 7303371d780613819b5617a569edcb8cef8b9073 /drivers | |
| parent | 190a43783f2c43186180c827444d4eac901b4bcf (diff) | |
drm/nouveau: Ignore broken legacy I2C entries.
The nv05 card in the bug report [1] doesn't have usable I2C port
register offsets (they're all filled with zeros). Ignore them and use
the defaults.
[1] http://bugs.launchpad.net/bugs/569505
Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_bios.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c index 9ab0c83fe9b..ed0f5303850 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bios.c +++ b/drivers/gpu/drm/nouveau/nouveau_bios.c @@ -5167,10 +5167,14 @@ static int parse_bmp_structure(struct drm_device *dev, struct nvbios *bios, unsi bios->legacy.i2c_indices.crt = bios->data[legacy_i2c_offset]; bios->legacy.i2c_indices.tv = bios->data[legacy_i2c_offset + 1]; bios->legacy.i2c_indices.panel = bios->data[legacy_i2c_offset + 2]; - bios->dcb.i2c[0].write = bios->data[legacy_i2c_offset + 4]; - bios->dcb.i2c[0].read = bios->data[legacy_i2c_offset + 5]; - bios->dcb.i2c[1].write = bios->data[legacy_i2c_offset + 6]; - bios->dcb.i2c[1].read = bios->data[legacy_i2c_offset + 7]; + if (bios->data[legacy_i2c_offset + 4]) + bios->dcb.i2c[0].write = bios->data[legacy_i2c_offset + 4]; + if (bios->data[legacy_i2c_offset + 5]) + bios->dcb.i2c[0].read = bios->data[legacy_i2c_offset + 5]; + if (bios->data[legacy_i2c_offset + 6]) + bios->dcb.i2c[1].write = bios->data[legacy_i2c_offset + 6]; + if (bios->data[legacy_i2c_offset + 7]) + bios->dcb.i2c[1].read = bios->data[legacy_i2c_offset + 7]; if (bmplength > 74) { bios->fmaxvco = ROM32(bmp[67]); |