On Wed, Apr 22, 2009 at 10:42:36AM -0400, Alan Stern wrote: > This patch (as1196) adds a new scsi_device flag to tell sd.c that it > should verify the results of READ CAPACITY by trying the read the last > sector. This is necessary because a large percentage of USB > mass-storage devices -- too many for a blacklist -- have a bug whereby > they return the total number of sectors rather than the index of the > last sector. > > The new sd_read_last_sector() routine carries out the test, using a > very short timeout and a small number of retries. Any working device > for which the check_capacity flag is set should be able to pass the > test easily. > > Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> > > --- > > James & Greg: > > Although part of this patch touches usb-storage, the majority of > it affects SCSI files. Is it okay if the whole thing goes in via > James's tree? No objection from me at all. Feel free to add a: Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxx> to the patch and push it through James. thanks, greg k-h -- 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
