drm/etnaviv: reject timeouts with tv_nsec >= NSEC_PER_SEC

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Most kernel interfaces that take a timespec require normalized
representation with tv_nsec between 0 and NSEC_PER_SEC.

Passing values larger than 0x100000000ull further behaves differently
on 32-bit and 64-bit kernels, and can cause the latter to spend a long
time counting seconds in timespec64_sub()/set_normalized_timespec64().

Reject those large values at the user interface to enforce sane and
portable behavior.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

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Arnd Bergmann 2019-11-11 17:20:04 +01:00

parent 6cedb8b377

commit 245595e83f

1 changed files with 9 additions and 0 deletions

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drivers/gpu/drm/etnaviv/etnaviv_drv.c

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