On 01/15/2014 09:37 PM, Alan Stern wrote: > Evidently some wacky USB-ATA bridges don't recognize the SYNCHRONIZE > CACHE command, as shown in this email thread: > > http://marc.info/?t=138978356200002&r=1&w=2 > > The fact that we can't tell them to drain their caches shouldn't > prevent the system from going into suspend. Therefore sd_sync_cache() > shouldn't return an error if the device replies with an Invalid > Command ASC. > > Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > Reported-by: Sven Neumann <s.neumann@xxxxxxxxxxxx> > Tested-by: Daniel Mack <zonque@xxxxxxxxx> > CC: Oliver Neukum <oliver@xxxxxxxxxx> > CC: <stable@xxxxxxxxxxxxxxx> Any objections about this patch? It would be good to get it merged for 3.14, if possible. Thanks, Daniel > > --- > > > [as1734] > > > drivers/scsi/sd.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > Index: usb-3.13/drivers/scsi/sd.c > =================================================================== > --- usb-3.13.orig/drivers/scsi/sd.c > +++ usb-3.13/drivers/scsi/sd.c > @@ -1463,8 +1463,8 @@ static int sd_sync_cache(struct scsi_dis > sd_print_sense_hdr(sdkp, &sshdr); > /* we need to evaluate the error return */ > if (scsi_sense_valid(&sshdr) && > - /* 0x3a is medium not present */ > - sshdr.asc == 0x3a) > + (sshdr.asc == 0x3a || /* medium not present */ > + sshdr.asc == 0x20)) /* invalid command */ > /* this is no error here */ > return 0; > > -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
