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[Qemu-devel] [PULL 3/4] megasas: Add write function to handle write acce
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 3/4] megasas: Add write function to handle write access to PCI BAR 3 |
Date: |
Tue, 28 Jul 2015 10:04:54 +0200 |
From: Salva Peiró <address@hidden>
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 <address@hidden>
Acked-by: Hannes Reinecke <address@hidden>
Message-Id: <address@hidden>
Signed-off-by: Paolo Bonzini <address@hidden>
---
hw/scsi/megasas.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 51ba9e0..a04369c 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -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,
--
2.4.3