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authorAl Viro <viro@parcelfarce.linux.theplanet.co.uk>2005-05-16 01:59:55 +0100
committerJames Bottomley <jejb@mulgrave.(none)>2005-05-26 08:41:15 -0500
commit631e8a1398ce4cfef8b30678d51daf0c64313a09 (patch)
tree14d3b601b4a7160568c58d53a94a0a4711094588 /include/scsi/scsi.h
parent53222b906903fd861dc24ebccfa07ee125941313 (diff)
downloadop-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/scsi/scsi.h')
-rw-r--r--include/scsi/scsi.h1
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
/*
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