Re: USB serial regression 2.6.31.1 -> 2.6.31.2 [PATCH]

From: Ben Efros
Date: Sun Oct 11 2009 - 12:40:21 EST

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In reply to: Greg KH: "Re: USB serial regression 2.6.31.1 -> 2.6.31.2 [PATCH]"
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----- "Benjamin Herrenschmidt" <benh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Sat, 2009-10-10 at 17:21 -0700, Ben Efros wrote:
> >
> > Ben Herrenschmidt's patch[1] to retry without SANE_SENSE might be
> > combined be able to be used to detect this 'INSANE_SENSE' scenario,
> > but not in its current form.
> >
> > Devices lying about the "additional sense length" doesn't seem all
> > that common, so it might be better to just flag the device as
> insane
> > and not worry about reworking Ben Herrenschmidt's patch.
>
> I don't like flagging devices ... though we already somewhat do it
> for
> the mode switch so it would be possible to stick the flag there.
>
> Another option is to set the insane flag from a retry path similar
> to what I posted so that it doesn't ping pong.

The more i think of it, I don't think removal of the SANE_SENSE flag is a good idea after we've made reasonable effort to detect it. The problem is the buggy devices that trigger SANE_SENSE to be set by error in the first place because they lie about the additional sense length.

Since these Huawei devices are already listed in the unusual devices, we could add the INSANE_SENSE flag to them as I did below... Ben Herrenschmidt, can you confirm that this works for the regression as well?

Add support for INSANE_SENSE flag to disable SANE_SENSE
detection on known buggy usb mass storage devices.

Signed-off-by: Ben Efros <ben@xxxxxxxxxxxxx>

--- linux-2.6.31.3/drivers/usb/storage/transport.c 2009-09-24 08:45:25.000000000 -0700
+++ linux-2.6.31.3/drivers/usb/storage/transport.c 2009-10-11 08:06:26.000000000 -0700
@@ -668,7 +668,7 @@ void usb_stor_invoke_transport(struct sc
*/
if ((srb->cmnd[0] == ATA_16 || srb->cmnd[0] == ATA_12) &&
result == USB_STOR_TRANSPORT_GOOD &&
- !(us->fflags & US_FL_SANE_SENSE) &&
+ !(us->fflags & (US_FL_SANE_SENSE|US_FL_INSANE_SENSE)) &&
!(srb->cmnd[2] & 0x20)) {
US_DEBUGP("-- SAT supported, increasing auto-sense\n");
us->fflags |= US_FL_SANE_SENSE;
@@ -738,8 +744,9 @@ void usb_stor_invoke_transport(struct sc
* The response code must be 70h through 73h inclusive.
*/
if (srb->sense_buffer[7] > (US_SENSE_SIZE - 8) &&
- !(us->fflags & US_FL_SANE_SENSE) &&
+ !(us->fflags & (US_FL_SANE_SENSE|US_FL_INSANE_SENSE)) &&
(srb->sense_buffer[0] & 0x7C) == 0x70) {
+
US_DEBUGP("-- SANE_SENSE support enabled\n");
us->fflags |= US_FL_SANE_SENSE;

--- linux-2.6.31.3/drivers/usb/storage/scsiglue.c 2009-09-24 08:45:25.000000000 -0700
+++ linux-2.6.31.3/drivers/usb/storage/scsiglue.c 2009-10-11 07:52:22.000000000 -0700
@@ -209,8 +209,11 @@ static int slave_configure(struct scsi_d
if (us->fflags & US_FL_CAPACITY_HEURISTICS)
sdev->guess_capacity = 1;

- /* assume SPC3 or latter devices support sense size > 18 */
- if (sdev->scsi_level > SCSI_SPC_2)
+ /* assume SPC3 or latter devices support sense size > 18
+ * if they haven't been marked to have insane sense data
+ */
+ if (sdev->scsi_level > SCSI_SPC_2 &&
+ !(us->fflags & US_FL_INSANE_SENSE))
us->fflags |= US_FL_SANE_SENSE;

/* Some devices report a SCSI revision level above 2 but are
--- linux-2.6.31.3/include/linux/usb_usual.h 2009-09-24 08:45:25.000000000 -0700
+++ linux-2.6.31.3/include/linux/usb_usual.h 2009-10-11 07:54:06.000000000 -0700
@@ -56,7 +56,9 @@
US_FLAG(SANE_SENSE, 0x00008000) \
/* Sane Sense (> 18 bytes) */ \
US_FLAG(CAPACITY_OK, 0x00010000) \
- /* READ CAPACITY response is correct */
+ /* READ CAPACITY response is correct */ \
+ US_FLAG(INSANE_SENSE, 0x00020000) \
+ /* Device does not support SANE_SENSE (> 18 bytes) */

#define US_FLAG(name, value) US_FL_##name = value ,
enum { US_DO_ALL_FLAGS };
--- linux-2.6.31.3/drivers/usb/storage/unusual_devs.h 2009-10-11 08:57:08.000000000 -0700
+++ linux-2.6.31.3/drivers/usb/storage/unusual_devs.h 2009-10-11 08:59:34.000000000 -0700
@@ -1422,332 +1422,332 @@ UNUSUAL_DEV( 0x12d1, 0x1001, 0x0000, 0x
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1003, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1004, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1401, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1402, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1403, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1404, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1405, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1406, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1407, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1408, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1409, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140A, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140B, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140C, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140D, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140E, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x140F, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1410, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1411, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1412, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1413, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1414, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1415, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1416, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1417, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1418, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1419, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141A, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141B, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141C, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141D, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141E, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x141F, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1420, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1421, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1422, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1423, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1424, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1425, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1426, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1427, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1428, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1429, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142A, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142B, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142C, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142D, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142E, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x142F, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1430, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1431, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1432, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1433, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1434, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1435, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1436, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1437, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1438, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x1439, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143A, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143B, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143C, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143D, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143E, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),
UNUSUAL_DEV( 0x12d1, 0x143F, 0x0000, 0x0000,
"HUAWEI MOBILE",
"Mass Storage",
US_SC_DEVICE, US_PR_DEVICE, usb_stor_huawei_e220_init,
- 0),
+ US_FL_INSANE_SENSE),

/* Reported by Vilius Bilinkevicius <vilisas AT xxx DOT lt) */
UNUSUAL_DEV( 0x132b, 0x000b, 0x0001, 0x0001,
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Next message: Joe Korty: "Re: NOHZ: local_softirq_pending 08"
Previous message: Arjan van de Ven: "Re: [PATCH RFC] [PATCH] drivers/scsi/ch.c: Remove BKL in ch_open"
In reply to: Greg KH: "Re: USB serial regression 2.6.31.1 -> 2.6.31.2 [PATCH]"
Next in thread: Benjamin Herrenschmidt: "Re: USB serial regression 2.6.31.1 -> 2.6.31.2 [PATCH]"
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