Re: [usb-storage] Re: 3.16 commit 89fb4cd errors on drives without SYNC CACHE

2014-11-21 Thread Alan Stern
On Fri, 21 Nov 2014, Christoph Hellwig wrote: > > usb-storage sets wce_default_on only for devices that are marked with > > the US_FL_WRITE_CACHE quirk flag. Currently only two devices have that > > flag: the Seagate Portable HDD (vendor ID 0x0bc2, product ID 0x2300) > > and the Western Digita

Re: [usb-storage] Re: 3.16 commit 89fb4cd errors on drives without SYNC CACHE

2014-11-21 Thread Christoph Hellwig
> usb-storage sets wce_default_on only for devices that are marked with > the US_FL_WRITE_CACHE quirk flag. Currently only two devices have that > flag: the Seagate Portable HDD (vendor ID 0x0bc2, product ID 0x2300) > and the Western Digital My Password HDD (vendor ID 0x1058, product ID > 0x07

Re: [usb-storage] Re: 3.16 commit 89fb4cd errors on drives without SYNC CACHE

2014-11-20 Thread Alan Stern
On Wed, 19 Nov 2014, Christoph Hellwig wrote: > On Sat, Nov 15, 2014 at 08:14:57PM -0500, Jeff DeFouw wrote: > > Kernel 3.16 includes commit > > 89fb4cd1f717a871ef79fa7debbe840e3225cd54 > > scsi: handle flush errors properly > > > > I have an old USB backup drive that indicates a write cache but