[Qemu-devel] [PATCH] fix acpi regression

[Wen Congyang <wency@cn.fujitsu.com>]

This bug is introduced by commit 23910d3f.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>

---
 hw/acpi.c |   10 +++-------
 1 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/hw/acpi.c b/hw/acpi.c
index e372474..790bd3b 100644
--- a/hw/acpi.c
+++ b/hw/acpi.c
@@ -355,7 +355,7 @@ static uint8_t *acpi_gpe_ioport_get_ptr(ACPIGPE *gpe, uint32_t addr)
     if (addr < gpe->len / 2) {
         cur = gpe->sts + addr;
     } else if (addr < gpe->len) {
-        cur = gpe->en + addr;
+        cur = gpe->en + addr - gpe->len / 2;
     } else {
         abort();
     }
@@ -369,12 +369,8 @@ void acpi_gpe_ioport_writeb(ACPIGPE *gpe, uint32_t addr, uint32_t val)
 
     addr -= gpe->blk;
     cur = acpi_gpe_ioport_get_ptr(gpe, addr);
-    if (addr < gpe->len / 2) {
-        /* GPE_STS */
-        *cur = (*cur) & ~val;
-    } else if (addr < gpe->len) {
-        /* GPE_EN */
-        *cur = val;
+    if (cur != NULL) {
+        *cur = val & 0xff;
     } else {
         abort();
     }
-- 
1.7.1