The interrupt controller mask register (PICMR) allows writing any value
to any of the 32 interrupt mask bits. Writing a 0 masks the interrupt
writing a 1 unmasks (enables) the the interrupt.
For some reason the old code was or'ing the write values to the PICMR
meaning it was not possible to ever mask a interrupt once it was
enabled.
I have tested this by running linux 4.18 and my regular checks, I don't
see any issues.
Reported-by: Davidson Francis <davidsond...@gmail.com>
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
Signed-off-by: Stafford Horne <sho...@gmail.com>
---
target/openrisc/sys_helper.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/openrisc/sys_helper.c b/target/openrisc/sys_helper.c
index 541615bfb3..b66a45c1e0 100644
--- a/target/openrisc/sys_helper.c
+++ b/target/openrisc/sys_helper.c
@@ -142,7 +142,7 @@ void HELPER(mtspr)(CPUOpenRISCState *env, target_ulong spr,
target_ulong rb)
}
break;
case TO_SPR(9, 0): /* PICMR */
- env->picmr |= rb;
+ env->picmr = rb;
break;
case TO_SPR(9, 2): /* PICSR */
env->picsr &= ~rb;
--
2.17.0
