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authorChris Wilson <chris@chris-wilson.co.uk>2016-10-21 15:15:40 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2016-10-21 20:23:16 +0200
commit8a5bbf327aa16025c78491266a6425807c7fbee0 (patch)
treec43d7cf6a49be82fe24ee7fcb808f2f8e36b0978 /sound/hda
parent93ca7e00667063a8dc86f04373e85e89a09efef4 (diff)
drm: Use u64 for intermediate dotclock calculations
We have reached the era where monitor bandwidths now exceed 31bits in frequency calculations, though as we stored them in kHz units we are safe from overflow in the modelines for some time. [ 48.723720] UBSAN: Undefined behaviour in ../drivers/gpu/drm/drm_modes.c:325:49 [ 48.726943] signed integer overflow: [ 48.728503] 2240 * 1000000 cannot be represented in type 'int' Reported-by: Martin Liška <marxin.liska@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98372 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/20161021141540.26837-1-chris@chris-wilson.co.uk
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