Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* QOM interface fix (Eduardo)
* RTC fixes (Gaohuai, Igor)
* Memory leak fixes (Li Qiang, me)
* Ctrl-a b regression (Marc-André)
* Stubs cleanups and fixes (Leif, me)
* hxtool tweak (me)
* HAX support (Vincent)
* QemuThread, exec.c and SCSI fixes (Roman, Xinhua, me)
* PC_COMPAT_2_8 fix (Marcelo)
* stronger bitmap assertions (Peter)

# gpg: Signature made Fri 20 Jan 2017 12:49:01 GMT
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (35 commits)
  pc.h: move x-mach-use-reliable-get-clock compat entry to PC_COMPAT_2_8
  bitmap: assert that start and nr are non negative
  Revert "win32: don't run subprocess tests on Mingw32 platform"
  hax: add Darwin support
  Plumb the HAXM-based hardware acceleration support
  target/i386: Add Intel HAX files
  kvm: move cpu synchronization code
  KVM: PPC: eliminate unnecessary duplicate constants
  ramblock-notifier: new
  char: fix ctrl-a b not working
  exec: Add missing rcu_read_unlock
  x86: ioapic: fix fail migration when irqchip=split
  x86: ioapic: dump version for "info ioapic"
  x86: ioapic: add traces for ioapic
  hxtool: emit Texinfo headings as @subsection
  qemu-thread: fix qemu_thread_set_name() race in qemu_thread_create()
  serial: fix memory leak in serial exit
  scsi-block: fix direction of BYTCHK test for VERIFY commands
  pc: fix crash in rtc_set_memory() if initial cpu is marked as hotplugged
  acpi: filter based on CONFIG_ACPI_X86 rather than TARGET
  ...

# Conflicts:
#	include/hw/i386/pc.h

1 files changed, 6 insertions, 5 deletions

diff --git a/hw/scsi/megasas.c b/hw/scsi/megasas.c
index 67fc1e7893..6233865494 100644
--- a/hw/scsi/megasas.c
+++ b/hw/scsi/megasas.c
@@ -683,14 +683,14 @@ static int megasas_map_dcmd(MegasasState *s, MegasasCmd *cmd)
         trace_megasas_dcmd_invalid_sge(cmd->index,
                                        cmd->frame->header.sge_count);
         cmd->iov_size = 0;
-        return -1;
+        return -EINVAL;
     }
     iov_pa = megasas_sgl_get_addr(cmd, &cmd->frame->dcmd.sgl);
     iov_size = megasas_sgl_get_len(cmd, &cmd->frame->dcmd.sgl);
     pci_dma_sglist_init(&cmd->qsg, PCI_DEVICE(s), 1);
     qemu_sglist_add(&cmd->qsg, iov_pa, iov_size);
     cmd->iov_size = iov_size;
-    return cmd->iov_size;
+    return 0;
 }
 
 static void megasas_finish_dcmd(MegasasCmd *cmd, uint32_t iov_size)
@@ -1559,19 +1559,20 @@ static const struct dcmd_cmd_tbl_t {
 
 static int megasas_handle_dcmd(MegasasState *s, MegasasCmd *cmd)
 {
-    int opcode, len;
+    int opcode;
     int retval = 0;
+    size_t len;
     const struct dcmd_cmd_tbl_t *cmdptr = dcmd_cmd_tbl;
 
     opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
     trace_megasas_handle_dcmd(cmd->index, opcode);
-    len = megasas_map_dcmd(s, cmd);
-    if (len < 0) {
+    if (megasas_map_dcmd(s, cmd) < 0) {
         return MFI_STAT_MEMORY_NOT_AVAILABLE;
     }
     while (cmdptr->opcode != -1 && cmdptr->opcode != opcode) {
         cmdptr++;
     }
+    len = cmd->iov_size;
     if (cmdptr->opcode == -1) {
         trace_megasas_dcmd_unhandled(cmd->index, opcode, len);
         retval = megasas_dcmd_dummy(s, cmd);