A single fix for late microcode loading to handle the correct return
value from stop_machine(), from Mihai Carabas.
x86/microcode: Fix return value for microcode late loading
The return value from stop_machine() might not be consistent.
stop_machine_cpuslocked() returns:
- zero if all functions have returned 0.
- a non-zero value if at least one of the functions returned
a non-zero value.
There is no way to know if it is negative or positive. So make
__reload_late() return 0 on success or negative otherwise.
[ bp: Unify ret val check and touch up. ]
Signed-off-by: Mihai Carabas <mihai.carabas@oracle.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/1587497318-4438-1-git-send-email-mihai.carabas@oracle.com
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