diff options
| author | Gerd Hoffmann <[email protected]> | 2016-01-25 12:02:28 +0100 |
|---|---|---|
| committer | Jani Nikula <[email protected]> | 2016-01-29 08:56:26 +0200 |
| commit | 1e859111c128265f8d62b39ff322e42b1ddb5a20 (patch) | |
| tree | 4e76633050fc79874d5c33d62c5f46c8ec8b3c04 | |
| parent | b16bb01fd2d599ba5cbc031b2c5318eba29efbc7 (diff) | |
drm/i915: refine qemu south bridge detection
The test for the qemu q35 south bridge added by commit
"39bfcd52 drm/i915: more virtual south bridge detection"
also matches on real hardware. Having the check for
virtual systems last in the list is not enough to avoid
that ...
Refine the check by additionally verifying the pci
subsystem id to see whenever it *really* is qemu.
[ v2: fix subvendor tyops ]
Reported-and-tested-by: Bjørn Mork <[email protected]>
Signed-off-by: Gerd Hoffmann <[email protected]>
Tested-by: Bruno Wolff III <[email protected]>
Cc: [email protected]
Signed-off-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c index 706b8eabfaf4..11d8414edbbe 100644 --- a/drivers/gpu/drm/i915/i915_drv.c +++ b/drivers/gpu/drm/i915/i915_drv.c @@ -501,7 +501,9 @@ void intel_detect_pch(struct drm_device *dev) WARN_ON(!IS_SKYLAKE(dev) && !IS_KABYLAKE(dev)); } else if ((id == INTEL_PCH_P2X_DEVICE_ID_TYPE) || - (id == INTEL_PCH_QEMU_DEVICE_ID_TYPE)) { + ((id == INTEL_PCH_QEMU_DEVICE_ID_TYPE) && + pch->subsystem_vendor == 0x1af4 && + pch->subsystem_device == 0x1100)) { dev_priv->pch_type = intel_virt_detect_pch(dev); } else continue; |