diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-22 15:33:27 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-01-23 00:52:56 +0100 |
| commit | c00db2463978ffab59d731773aae1a4f4e11d78c (patch) | |
| tree | ce481cf12691bedf6f23c8909902b7d6a6453d13 /drivers/gpu/drm/i915/intel_display.c | |
| parent | 7b9f35a6dd72f89452c58bbdbaf063027bf857ec (diff) | |
drm/i915: fixup sbi_read/write locking
commit 09153000b8ca32a539a1207edebabd0d40b6c61b
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Dec 12 14:06:44 2012 +0100
drm/i915: rework locking for intel_dpio|sbi_read|write
reworked the locking around sbi_read/write functions for 3.8-fixes.
But
commit dde86e2db54545ef981b64805097a7b4c3156d6e
Author: Paulo Zanoni <paulo.r.zanoni@intel.com>
Date: Sat Dec 1 12:04:25 2012 -0200
drm/i915: add lpt_init_pch_refcl
Added new use-cases in the -next tree which has not been updated in
the merge. Fix it up.
Reported-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Tested-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 305be115319..886124a720e 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -4873,6 +4873,8 @@ static void lpt_init_pch_refclk(struct drm_device *dev) if (!has_vga) return; + mutex_lock(&dev_priv->dpio_lock); + /* XXX: Rip out SDV support once Haswell ships for real. */ if (IS_HASWELL(dev) && (dev->pci_device & 0xFF00) == 0x0C00) is_sdv = true; @@ -5015,6 +5017,8 @@ static void lpt_init_pch_refclk(struct drm_device *dev) tmp = intel_sbi_read(dev_priv, SBI_DBUFF0, SBI_ICLK); tmp |= SBI_DBUFF0_ENABLE; intel_sbi_write(dev_priv, SBI_DBUFF0, tmp, SBI_ICLK); + + mutex_unlock(&dev_priv->dpio_lock); } /* |