Merge commit 'f430694188293f99a316bfa375b7cc17d23a06ed' into upstream-merge

* commit 'f430694188293f99a316bfa375b7cc17d23a06ed': (248 commits)
  add pc-1.3 machine type
  Cleanup unused global var qemu_system_powerdown
  target-sparc: use notifier for signaling guest system_powerdown command
  target-arm: use notifier for signaling guest system_powerdown command
  acpi: use notifier for signaling guest system_powerdown command
  Introduce powerdown_notifiers
  tcg/i386: fix build with -march < i686
  tcg: Streamline movcond_i64 using movcond_i32
  tcg: Streamline movcond_i64 using 32-bit arithmetic
  tcg: Sanity check goto_tb input
  tcg: Sanity check deposit inputs
  tcg: Add tcg_debug_assert
  tcg: Implement concat*_i64 with deposit_i64
  tcg: Emit XORI as NOT for appropriate constants
  tcg: Optimize initial inputs for ori_i64
  tcg: Emit ANDI as EXTU for appropriate constants
  tcg: Adjust descriptions of *cond opcodes
  tcg/mips: fix MIPS32(R2) detection
  block: remove keep_read_only flag from BlockDriverState struct
  block: convert bdrv_commit() to use bdrv_reopen()
  ...

Conflicts:
	hw/pc_piix.c

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 18 insertions, 5 deletions

diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c
index 4981a0243..058d3b237 100644
--- a/hw/scsi-bus.c
+++ b/hw/scsi-bus.c
@@ -801,26 +801,39 @@ static int ata_passthrough_16_xfer_size(SCSIDevice *dev, uint8_t *buf)
     return xfer * unit;
 }
 
-static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
+uint32_t scsi_data_cdb_length(uint8_t *buf)
+{
+    if ((buf[0] >> 5) == 0 && buf[4] == 0) {
+        return 256;
+    } else {
+        return scsi_cdb_length(buf);
+    }
+}
+
+uint32_t scsi_cdb_length(uint8_t *buf)
 {
     switch (buf[0] >> 5) {
     case 0:
-        cmd->xfer = buf[4];
+        return buf[4];
         break;
     case 1:
     case 2:
-        cmd->xfer = lduw_be_p(&buf[7]);
+        return lduw_be_p(&buf[7]);
         break;
     case 4:
-        cmd->xfer = ldl_be_p(&buf[10]) & 0xffffffffULL;
+        return ldl_be_p(&buf[10]) & 0xffffffffULL;
         break;
     case 5:
-        cmd->xfer = ldl_be_p(&buf[6]) & 0xffffffffULL;
+        return ldl_be_p(&buf[6]) & 0xffffffffULL;
         break;
     default:
         return -1;
     }
+}
 
+static int scsi_req_length(SCSICommand *cmd, SCSIDevice *dev, uint8_t *buf)
+{
+    cmd->xfer = scsi_cdb_length(buf);
     switch (buf[0]) {
     case TEST_UNIT_READY:
     case REWIND: