Re: [PATCH v3 2/4] usb: storage: add support for write cache quirkon usb hdd

From: Sergei Shtylyov
Date: Mon Jun 11 2012 - 13:12:05 EST


Hello.

On 10-06-2012 4:30, 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.

Signed-off-by: Namjae Jeon<namjae.jeon@xxxxxxxxxxx>
Signed-off-by: Pankaj Kumar<pankaj.km@xxxxxxxxxxx>
Signed-off-by: Amit Sahrawat<a.sahrawat@xxxxxxxxxxx>
---
drivers/usb/storage/scsiglue.c | 5 +++++
drivers/usb/storage/usb.c | 5 ++++-
include/linux/usb_usual.h | 4 +++-
3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/storage/scsiglue.c
b/drivers/usb/storage/scsiglue.c
index a324a5d..fe42547 100644
--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
[...]
@@ -529,6 +529,9 @@ static void adjust_quirks(struct us_data *us)
case 'o':
f |= US_FL_CAPACITY_OK;
break;
+ case 'p':
+ f |= US_FL_WRITE_CACHE;
+ break;
case 'r':
f |= US_FL_IGNORE_RESIDUE;
break;

You probably should unite this chunk with the documentation update
patch.

Hi Sergei.
I tried to post documentation update patch(4/4) for this chunk.
Do I misunderstand ?

I mean that the documenation should be updated in the same patch where you add the new value.

WBR, Sergei
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