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megasas: Add write function to handle write access to PCI BAR 3

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This patch fixes a QEMU SEGFAULT when a write operation is performed on
the memory region of the PCI BAR 3 (base address space).
When a writeb(0xe0000000) is performed the .write function is invoked to
handle the write access, however, since the .write is not initialised,
the call to 0, causes QEMU to SEGFAULT.

Signed-off-by: Salva Peiró <speirofr@gmail.com>
Acked-by: Hannes Reinecke <hare@suse.com>
Message-Id: <1437987112-24744-1-git-send-email-speirofr@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Salva Peiró 2015-07-27 10:51:52 +02:00 committed by Paolo Bonzini
parent 019c2ab862
commit 55875fc4ca
1 changed files with 7 additions and 0 deletions
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7
hw/scsi/megasas.c
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@ -2202,8 +2202,15 @@ static uint64_t megasas_queue_read(void *opaque, hwaddr addr,
return 0;
}
static void megasas_queue_write(void *opaque, hwaddr addr,
uint64_t val, unsigned size)
{
return;
}
static const MemoryRegionOps megasas_queue_ops = {
.read = megasas_queue_read,
.write = megasas_queue_write,
.endianness = DEVICE_LITTLE_ENDIAN,
.impl = {
.min_access_size = 8,