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| author | Al Viro <viro@parcelfarce.linux.theplanet.co.uk> | 2005-05-16 02:59:55 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-05-26 15:41:15 +0200 |
| commit | 631e8a1398ce4cfef8b30678d51daf0c64313a09 (patch) | |
| tree | 14d3b601b4a7160568c58d53a94a0a4711094588 /drivers/scsi/scsi_scan.c | |
| parent | [SCSI] sym2 version 2.2.1 (diff) | |
| download | linux-631e8a1398ce4cfef8b30678d51daf0c64313a09.tar.xz linux-631e8a1398ce4cfef8b30678d51daf0c64313a09.zip | |
[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 'drivers/scsi/scsi_scan.c')
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index cca772624ae7..588611568d14 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -625,6 +625,7 @@ static int scsi_add_lun(struct scsi_device *sdev, char *inq_result, int *bflags) case TYPE_MEDIUM_CHANGER: case TYPE_ENCLOSURE: case TYPE_COMM: + case TYPE_RBC: sdev->writeable = 1; break; case TYPE_WORM: |