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Dmitry G. Gorbachev: After kbd controller init, the System Flag should be set to 1.

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Fixes rebooting on real hardware (famous "Flushing cache" hang).
See issue #1842 for more details.

svn path=/trunk/; revision=24744
This commit is contained in:
Aleksey Bragin
2006-11-13 12:40:02 +00:00
parent e884800c6c
commit 23c4a96e42
1 changed files with 27 additions and 0 deletions
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reactos/drivers/input/i8042prt/i8042prt.c
+27
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@@ -599,6 +599,7 @@ static NTSTATUS STDCALL I8042BasicDetect(PDEVICE_EXTENSION DevExt)
static NTSTATUS STDCALL I8042Initialize(PDEVICE_EXTENSION DevExt)
{
NTSTATUS Status;
UCHAR Value = 0;
Status = I8042BasicDetect(DevExt);
if (!NT_SUCCESS(Status)) {
@@ -632,6 +633,32 @@ static NTSTATUS STDCALL I8042Initialize(PDEVICE_EXTENSION DevExt)
I8042MouseEnable(DevExt);
}
/*
* Some machines do not reboot if SF is not set.
*/
if (!I8042Write(DevExt, I8042_CTRL_PORT, KBD_READ_MODE)) {
DPRINT1("Can't read i8042 mode\n");
return Status;
}
Status = I8042ReadDataWait(DevExt, &Value);
if (!NT_SUCCESS(Status)) {
DPRINT1("No response after read i8042 mode\n");
return Status;
}
Value |= CCB_SYSTEM_FLAG;
if (!I8042Write(DevExt, I8042_CTRL_PORT, KBD_WRITE_MODE)) {
DPRINT1("Can't set i8042 mode\n");
return Status;
}
if (!I8042Write(DevExt, I8042_DATA_PORT, Value)) {
DPRINT1("Can't send i8042 mode\n");
return Status;
}
return STATUS_SUCCESS;
}