[Qemu-devel] [PATCH] allow disabling IDE block mode

[Carlo Marcelo Arenas Belon]

Greetings,

the following patch changes the logic for the processing of WIN_SETMULT so
that setting it to 0 (off) is a valid operation as shown by (running Linux
on qemu)

  # hdparm -m0 /dev/hda

  /dev/hda:
  setting multcount to 0
  multcount    =  0 (off)

this is specially visible while running Ubuntu Linux 6.06 (dapper) on qemu as
it by default disables multmode at boot resulting in the following error :

  hda: set_multmode: status=0x41 { DriveReady Error }
  hda: set_multmode: error=0x04 { DriveStatusError }
  ide: failed opcode was: 0xef

Carlo

qemu-disable-multsect.patch
Description: Text document