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| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-11 21:25:56 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-09-17 23:46:48 +0200 |
| commit | d660467c3ff2a0b7413e1b7a51452b34ffb49e5f (patch) | |
| tree | 39c562957364ba7c23c7d91b99b5e3041dcefc32 /include | |
| parent | drm/i915: intel_display.c handle latency variable efficiently (diff) | |
| download | linux-d660467c3ff2a0b7413e1b7a51452b34ffb49e5f.tar.xz linux-d660467c3ff2a0b7413e1b7a51452b34ffb49e5f.zip | |
drm/i915: prevent FIFO calculation overflows on 32 bits with high dotclocks
A very high dotclock (e.g. 229500kHz as reported by Anton) can cause
the entries_required variable to overflow, potentially leading to a
FIFO watermark value that's too low to support the given mode. Split
the division across the calculation to avoid this.
Cc: stable@kernel.org
Reported-by: Anton Khirnov <wyskas@gmail.com>
Tested-by: Anton Khirnov <wyskas@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions