Messages in this thread | | | Date | Sun, 03 Aug 2008 13:56:42 +0200 | From | Douglas Gilbert <> | Subject | Re: [usb-storage] BUG: SCSI: usb storage SDHC card doesn't work in 2.6.27-rc1 |
| |
Matthew Frost wrote: > --- Matthew Frost <artusemrys@sbcglobal.net> wrote: > >> Alan Stern wrote: >>>> The patches to fix this that I have tried do not apply >>>> cleanly to lk 2.6.26 (and break during compile if forced: >>>> "us->fflags" is not defined). >>>> >>>> Is there a lk 2.6.26 patch available? >>> Sorry about that; my patches are against the USB development tree and >>> I tend to forget to redo them against the vanilla kernel. Below is a >>> patch against 2.6.26. Or you can just edit the original patch and >>> change the occurrences of "fflags" to "flags". >>> >>> Alan Stern >>> >>> >>> Index: 2.6.26/drivers/usb/storage/transport.c >>> =================================================================== >>> --- 2.6.26.orig/drivers/usb/storage/transport.c >>> +++ 2.6.26/drivers/usb/storage/transport.c >>> @@ -1034,8 +1034,21 @@ int usb_stor_Bulk_transport(struct scsi_ >>> >>> /* try to compute the actual residue, based on how much data >>> * was really transferred and what the device tells us */ >>> - if (residue) { >>> - if (!(us->flags & US_FL_IGNORE_RESIDUE)) { >>> + if (residue && !(us->flags & US_FL_IGNORE_RESIDUE)) { >>> + >>> + /* Heuristically detect devices that generate bogus residues >>> + * by seeing what happens with INQUIRY and READ CAPACITY >>> + * commands. >>> + */ >>> + if (bcs->Status == US_BULK_STAT_OK && >>> + scsi_get_resid(srb) == 0 && >>> + ((srb->cmnd[0] == INQUIRY && >>> + transfer_length == 36) || >>> + (srb->cmnd[0] == READ_CAPACITY && >>> + transfer_length == 8))) { >>> + us->flags |= US_FL_IGNORE_RESIDUE; >>> + >>> + } else { >>> residue = min(residue, transfer_length); >>> scsi_set_resid(srb, max(scsi_get_resid(srb), >>> (int) residue)); >>> >>> >> Thanks! I've been trying to fix it manually, and it wouldn't work. Trying >> this version now. Let's see if this fixes my problem. >> >> Matt Frost
The above patch made my USB key: Alcor Micro Corp. Transcend JetFlash 110 USB 2.0 Flash Drive (2GB) usable in a pretty clean lk 2.6.26 .
Thanks Doug Gilbert
| |