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alpha: fix lazy-FPU mis(merged/applied/whatnot) 

Looks like a braino that used to be fixed in e.g. #next.alpha
had gotten into alpha.git cherry-picked version of that patch.

Sure, alpha has no preempt, but preempt_enable() in place of
preempt_disable() is actively confusing the readers...

Other than that, the cherry-picked variant matches what I have.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2023-03-06 19:58:56 -05:00
parent fe15c26ee2
commit c64c67c074
1 changed files with 2 additions and 2 deletions
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4
arch/alpha/lib/fpreg.c
View File

@ -23,7 +23,7 @@ alpha_read_fp_reg (unsigned long reg)
if (unlikely(reg >= 32))
return 0;
preempt_enable();
preempt_disable();
if (current_thread_info()->status & TS_SAVED_FP)
val = current_thread_info()->fp[reg];
else switch (reg) {
@ -133,7 +133,7 @@ alpha_read_fp_reg_s (unsigned long reg)
if (unlikely(reg >= 32))
return 0;
preempt_enable();
preempt_disable();
if (current_thread_info()->status & TS_SAVED_FP) {
LDT(0, current_thread_info()->fp[reg]);
STS(0, val);