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acpi: add dummy write function for acpi timer 

Otherwise the guest can crash qemu (NULL pointer dereference).

https://bugzilla.redhat.com/show_bug.cgi?id=947691

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1368534544-11826-1-git-send-email-kraxel@redhat.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Gerd Hoffmann 2013-05-14 14:29:04 +02:00 committed by Anthony Liguori
parent 035873283b
commit 2d3b989529
1 changed files with 7 additions and 0 deletions
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7
hw/acpi/core.c
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@ -462,8 +462,15 @@ static uint64_t acpi_pm_tmr_read(void *opaque, hwaddr addr, unsigned width)
return acpi_pm_tmr_get(opaque);
}
static void acpi_pm_tmr_write(void *opaque, hwaddr addr, uint64_t val,
unsigned width)
{
/* nothing */
}
static const MemoryRegionOps acpi_pm_tmr_ops = {
.read = acpi_pm_tmr_read,
.write = acpi_pm_tmr_write,
.valid.min_access_size = 4,
.valid.max_access_size = 4,
.endianness = DEVICE_LITTLE_ENDIAN,