diff options
| author | Icenowy Zheng <icenowy@aosc.io> | 2019-01-03 11:26:17 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-07 17:23:29 +0100 |
| commit | c5603d2fdb424849360fe7e3f8c1befc97571b8c (patch) | |
| tree | 2a3f30f9ce80ed64583f1d8e4f768436d467f36a | |
| parent | 34aabf918717dd14e05051896aaecd3b16b53d95 (diff) | |
| download | linux-0-day-c5603d2fdb424849360fe7e3f8c1befc97571b8c.tar.gz linux-0-day-c5603d2fdb424849360fe7e3f8c1befc97571b8c.tar.xz | |
USB: storage: don't insert sane sense for SPC3+ when bad sense specified
Currently the code will set US_FL_SANE_SENSE flag unconditionally if
device claims SPC3+, however we should allow US_FL_BAD_SENSE flag to
prevent this behavior, because SMI SM3350 UFS-USB bridge controller,
which claims SPC4, will show strange behavior with 96-byte sense
(put the chip into a wrong state that cannot read/write anything).
Check the presence of US_FL_BAD_SENSE when assuming US_FL_SANE_SENSE on
SPC4+ devices.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Cc: stable <stable@vger.kernel.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/storage/scsiglue.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index fde2e71a6ade3..a73ea495d5a7b 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -235,8 +235,12 @@ static int slave_configure(struct scsi_device *sdev) if (!(us->fflags & US_FL_NEEDS_CAP16)) sdev->try_rc_10_first = 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 + * unless US_FL_BAD_SENSE quirk is specified. + */ + if (sdev->scsi_level > SCSI_SPC_2 && + !(us->fflags & US_FL_BAD_SENSE)) us->fflags |= US_FL_SANE_SENSE; /* |