mips: vdso: Fix __arch_get_hw_counter()

On some MIPS variants (e.g. MIPS r1), vDSO clock_mode is set to
VDSO_CLOCK_NONE.

When VDSO_CLOCK_NONE is set the expected kernel behavior is to fallback
on syscalls. To do that the generic vDSO library expects UULONG_MAX as
return value of __arch_get_hw_counter().

Fix __arch_get_hw_counter() on MIPS defining a __VDSO_USE_SYSCALL case
that addressed the described scenario.

Reported-by: Maxime Bizon <[email protected]>
Signed-off-by: Vincenzo Frascino <[email protected]>
Tested-by: Maxime Bizon <[email protected]>
Signed-off-by: Paul Burton <[email protected]>
Cc: [email protected]

0 files changed, 0 insertions, 0 deletions