scsi: do not send MODE SENSE except to QEMU disks

This is the simplest way to avoid breaking boot on USB sticks that
stall when asked for the MODE SENSE page 4.  Some old sticks do
not support the MODE SENSE command at all and just return a
"medium may have changed" unit attention condition when SeaBIOS
sends it!

Reported-by: Dave Frodin <dave@camp.se-eng.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
1 file changed
tree: 4fee30a5e8e3b52d22e430943422e12001ec4c7a
  1. .gitignore
  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. TODO
  7. src/
  8. tools/
  9. vgasrc/