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drm/i915/bios: don't initialize fields based on vbt version

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In theory, these might clobber information for older VBT versions.

We might have to store the BDB version for later parsing, but currently
all code accessing these fields will only use them on newer platforms
with new enough BDB versions.

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/0232d9cb258e8f83c4180cdb8aad1459a312ec2a.1506586821.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2017-09-28 11:21:59 +03:00
parent a87145ca56
commit 2d936f1cf7
1 changed files with 0 additions and 13 deletions
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13
drivers/gpu/drm/i915/intel_bios.c
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@ -1347,19 +1347,6 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
*/
memcpy(child_dev_ptr, child,
min_t(size_t, defs->child_dev_size, sizeof(*child)));
/*
* copied full block, now init values when they are not
* available in current version
*/
if (bdb->version < 196) {
/* Set default values for bits added from v196 */
child_dev_ptr->iboost = 0;
child_dev_ptr->hpd_invert = 0;
}
if (bdb->version < 192)
child_dev_ptr->lspcon = 0;
}
return;
}