diff options
| author | Ben Widawsky <ben@bwidawsk.net> | 2013-05-23 11:09:55 -0700 |
|---|---|---|
| committer | Ben Widawsky <ben@bwidawsk.net> | 2013-05-23 11:12:32 -0700 |
| commit | 57bc7631e161a7bdcf7f68e1a46049dcb49c2256 (patch) | |
| tree | 79dd4f3c8b21e86c3d5f8f3068ac0aaefffd9e75 /lib/intel_mmio.c | |
| parent | a08d62257dbdc8f4d3f5e655e0ba7bd192af37ff (diff) | |
lib/intel_mmio: Fix the fix
commit 16e44f5499e1754dfb10fc62b22675f5aa6ac781
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Apr 3 00:22:41 2013 +0200
lib: fixup register access on gen2/3
THis fix was incorrect for a few reasons:
1. It didn't reflect the state in mmio_data.safe
2. It skipped forcewake on gen6+ which is both incorrect and
unnecessary (for gen<6).
3. It had 2 goto done, the second of which was impossible to hit.
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Diffstat (limited to 'lib/intel_mmio.c')
| -rw-r--r-- | lib/intel_mmio.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/lib/intel_mmio.c b/lib/intel_mmio.c index 7c26a29e..21a84d48 100644 --- a/lib/intel_mmio.c +++ b/lib/intel_mmio.c @@ -191,18 +191,15 @@ intel_register_access_init(struct pci_device *pci_dev, int safe) if (mmio_data.inited) return -1; - if (intel_gen(pci_dev->device_id) >= 6) - goto done; - mmio_data.safe = safe != 0 ? true : false; + mmio_data.safe = (safe != 0 && pci_dev->device_id >= 4) ? true : false; mmio_data.i915_devid = pci_dev->device_id; - if (mmio_data.safe && intel_gen(pci_dev->device_id) >= 4) + if (mmio_data.safe) mmio_data.map = intel_get_register_map(mmio_data.i915_devid); - if (intel_gen(pci_dev->device_id) >= 6) - goto done; - - /* Find where the forcewake lock is */ + /* Find where the forcewake lock is. Forcewake doesn't exist + * gen < 6, but the debugfs should do the right things for us. + */ ret = find_debugfs_path("/sys/kernel/debug/dri"); if (ret) { ret = find_debugfs_path("/debug/dri"); |