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SubjectRe: [PATCH v3 2/4] usb: storage: add support for write cache quirk on usb hdd
On Sat, 9 Jun 2012, Namjae Jeon wrote:

> Add support for write cache quirk on usb hdd. scsi driver will be set to wce
> by detecting write cache quirk in quirk list when plugging usb hdd.

> --- a/include/linux/usb_usual.h
> +++ b/include/linux/usb_usual.h
> @@ -64,7 +64,9 @@
> US_FLAG(NO_READ_CAPACITY_16, 0x00080000) \
> /* cannot handle READ_CAPACITY_16 */ \
> US_FLAG(INITIAL_READ10, 0x00100000) \
> - /* Initial READ(10) (and others) must be retried */
> + /* Initial READ(10) (and others) must be retried */ \
> + US_FLAG(WRITE_CACHE, 0x00200000) \
> + /* Write Cache status is not available */

The documentation for the new flag should be added in the same patch
along with the flag itself. There's no reason to have separate
patches.

Alan Stern



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