On 02/05/2014 12:04 PM, Daniel Mack wrote:
> 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 <st...@rowland.harvard.edu>
>> Reported-by: Sven Neumann <s.neum...@raumfeld.com>
>> Tested-by: Daniel Mack <zon...@gmail.com>
>> CC: Oliver Neukum <oli...@neukum.org>
>> CC: <sta...@vger.kernel.org>
> 
> Any objections about this patch? It would be good to get it merged for
> 3.14, if possible.

Ping? Did anyone queue this one up?


Thanks,
Daniel


>>  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;
>>  
>>
> 

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