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libqos/ahci: allow nondata commands for ahci_io variants

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These variants try to set a data offset, even if you don't specify one.
In the cases where the offset is zero and it's a nondata command, just
ignore the instruction.

Signed-off-by: John Snow <jsnow@redhat.com>
Message-id: 1452282920-21550-7-git-send-email-jsnow@redhat.com
This commit is contained in:
John Snow 2016-01-11 14:10:43 -05:00
parent b1b66c3b5e
commit b682d3a7cf
2 changed files with 5 additions and 12 deletions
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14
tests/ahci-test.c
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@ -1080,7 +1080,6 @@ static void test_flush_retry(void)
AHCIQState *ahci;
AHCICommand *cmd;
uint8_t port;
const char *s;
prepare_blkdebug_script(debug_path, "flush_to_disk");
ahci = ahci_boot_and_enable("-drive file=blkdebug:%s:%s,if=none,id=drive0,"
@ -1094,19 +1093,10 @@ static void test_flush_retry(void)
/* Issue Flush Command and wait for error */
port = ahci_port_select(ahci);
ahci_port_clear(ahci, port);
cmd = ahci_command_create(CMD_FLUSH_CACHE);
ahci_command_commit(ahci, cmd, port);
ahci_command_issue_async(ahci, cmd);
qmp_eventwait("STOP");
/* Complete the command */
s = "{'execute':'cont' }";
qmp_async(s);
qmp_eventwait("RESUME");
ahci_command_wait(ahci, cmd);
ahci_command_verify(ahci, cmd);
cmd = ahci_guest_io_halt(ahci, port, CMD_FLUSH_CACHE, 0, 0, 0);
ahci_guest_io_resume(ahci, cmd);
ahci_command_free(cmd);
ahci_shutdown(ahci);
}

3
tests/libqos/ahci.c
View File

@ -842,6 +842,9 @@ void ahci_command_set_offset(AHCICommand *cmd, uint64_t lba_sect)
if (cmd->props->atapi) {
ahci_atapi_command_set_offset(cmd, lba_sect);
return;
} else if (!cmd->props->data && !lba_sect) {
/* Not meaningful, ignore. */
return;
} else if (cmd->props->lba28) {
g_assert_cmphex(lba_sect, <=, 0xFFFFFFF);
} else if (cmd->props->lba48 || cmd->props->ncq) {