https://github.com/torvalds/linux
Revision ea12e2a0cad62f6d634da62e7bf50ffe077de13b authored by Imre Deak on 28 June 2016, 10:37:30 UTC, committed by Jani Nikula on 29 June 2016, 08:17:31 UTC
Since wait_for_atomic doesn't re-check the wait-for condition after
expiry of the timeout it can fail when called from non-atomic context
even if the condition is set correctly before the expiry. Fix this by
using the non-atomic wait_for instead.
I noticed this via the PLL locking timing out incorrectly, with this fix
I couldn't reproduce the problem.
Fixes: 0351b93992aa ("drm/i915: Do not lie about atomic timeout granularity")
CC: Chris Wilson <chris@chris-wilson.co.uk>
CC: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
CC: drm-intel-fixes@lists.freedesktop.org
Link: http://patchwork.freedesktop.org/patch/msgid/1467110253-16046-2-git-send-email-imre.deak@intel.com
(cherry picked from commit 0b786e41c73956126f6297764459021deef8aba7)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
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Tip revision: ea12e2a0cad62f6d634da62e7bf50ffe077de13b authored by Imre Deak on 28 June 2016, 10:37:30 UTC
drm/i915/bxt: Avoid early timeout during PLL enable
drm/i915/bxt: Avoid early timeout during PLL enable
Tip revision: ea12e2a
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| .get_maintainer.ignore | -rw-r--r-- | 31 bytes |
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| .mailmap | -rw-r--r-- | 6.4 KB |
| COPYING | -rw-r--r-- | 18.3 KB |
| CREDITS | -rw-r--r-- | 95.5 KB |
| Kbuild | -rw-r--r-- | 2.8 KB |
| Kconfig | -rw-r--r-- | 252 bytes |
| MAINTAINERS | -rw-r--r-- | 353.7 KB |
| Makefile | -rw-r--r-- | 56.0 KB |
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