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| author | Al Viro <viro@parcelfarce.linux.theplanet.co.uk> | 2005-05-16 01:59:55 +0100 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-05-26 08:41:15 -0500 |
| commit | 631e8a1398ce4cfef8b30678d51daf0c64313a09 (patch) | |
| tree | 14d3b601b4a7160568c58d53a94a0a4711094588 /include | |
| parent | 53222b906903fd861dc24ebccfa07ee125941313 (diff) | |
| download | op-kernel-dev-631e8a1398ce4cfef8b30678d51daf0c64313a09.zip op-kernel-dev-631e8a1398ce4cfef8b30678d51daf0c64313a09.tar.gz | |
[SCSI] TYPE_RBC cache fixes (sbp2.c affected)
a) TYPE_SDAD renamed to TYPE_RBC and taken to scsi.h
b) in sbp2.c remapping of TYPE_RPB to TYPE_DISK turned off
c) relevant places in midlayer and sd.c taught to accept TYPE_RBC
d) sd.c::sd_read_cache_type() looks into page 6 when dealing with
TYPE_RBC - these guys have writeback cache flag there and are not guaranteed
to have page 8 at all.
e) sd_read_cache_type() got an extra sanity check - it checks that
it got the page it asked for before using its contents. And screams if
mismatch had happened. Rationale: there are broken devices out there that
are "helpful" enough to go for "I don't have a page you've asked for, here,
have another one". For example, PL3507 had been caught doing just that...
f) sbp2 sets sdev->use_10_for_rw and sdev->use_10_for_ms instead
of bothering to remap READ6/WRITE6/MOD_SENSE, so most of the conversions
in there are gone now.
Incidentally, I wonder if USB storage devices that have no
mode page 8 are simply RBC ones. I haven't touched that, but it might
be interesting to check...
Signed-off-by: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/scsi/scsi.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h index ca1e3b4a..1fb2337 100644 --- a/include/scsi/scsi.h +++ b/include/scsi/scsi.h @@ -213,6 +213,7 @@ static inline int scsi_status_is_good(int status) #define TYPE_COMM 0x09 /* Communications device */ #define TYPE_ENCLOSURE 0x0d /* Enclosure Services Device */ #define TYPE_RAID 0x0c +#define TYPE_RBC 0x0e #define TYPE_NO_LUN 0x7f /* |
