This command is meant for ATAPI devices only, prohibit acknowledging it with a command aborted response when an IDE device is busy.
Signed-off-by: John Snow <js...@redhat.com> --- hw/ide/core.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/hw/ide/core.c b/hw/ide/core.c index da3baab..ba33064 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -1876,9 +1876,12 @@ void ide_exec_cmd(IDEBus *bus, uint32_t val) return; } - /* Only DEVICE RESET is allowed while BSY or/and DRQ are set */ - if ((s->status & (BUSY_STAT|DRQ_STAT)) && val != WIN_DEVICE_RESET) - return; + /* Only RESET is allowed to an ATAPI device while BSY and/or DRQ are set. */ + if (s->status & (BUSY_STAT|DRQ_STAT)) { + if (!(val == WIN_DEVICE_RESET) && (s->drive_kind == IDE_CD)) { + return; + } + } if (!ide_cmd_permitted(s, val)) { ide_abort_command(s); -- 2.4.3