[PATCH v2] hw/misc: use extract64 instead of 1 << i

[Tigran Sogomonian]

1 << i is casted to uint64_t while bitwise and with val.
So this value may become 0xffffffff80000000 but only
31th "start" bit is required.
Use the bitfield extract() API instead.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Tigran Sogomonian <tsogomonian@astralinux.ru>
---
 hw/misc/mps2-fpgaio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/misc/mps2-fpgaio.c b/hw/misc/mps2-fpgaio.c
index d07568248d..04a3da5db0 100644
--- a/hw/misc/mps2-fpgaio.c
+++ b/hw/misc/mps2-fpgaio.c
@@ -198,7 +198,7 @@ static void mps2_fpgaio_write(void *opaque, hwaddr offset, 
uint64_t value,
 
             s->led0 = value & MAKE_64BIT_MASK(0, s->num_leds);
             for (i = 0; i < s->num_leds; i++) {
-                led_set_state(s->led[i], value & (1 << i));
+                led_set_state(s->led[i], extract64(value, i, 1));
             }
         }
         break;
-- 
2.30.2