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USB: documentation: flags on usb-storage versus UAS 

Document which flags work storage, UAS or both

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20191114112758.32747-4-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2019-11-14 12:27:58 +01:00 committed by Greg Kroah-Hartman
parent 335cbbd576
commit 65cc8bf993
1 changed files with 12 additions and 10 deletions
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22
Documentation/admin-guide/kernel-parameters.txt
View File

@ -4998,13 +4998,13 @@
Flags is a set of characters, each corresponding
to a common usb-storage quirk flag as follows:
a = SANE_SENSE (collect more than 18 bytes
of sense data);
of sense data, not on uas);
b = BAD_SENSE (don't collect more than 18
bytes of sense data);
bytes of sense data, not on uas);
c = FIX_CAPACITY (decrease the reported
device capacity by one sector);
d = NO_READ_DISC_INFO (don't use
READ_DISC_INFO command);
READ_DISC_INFO command, not on uas);
e = NO_READ_CAPACITY_16 (don't use
READ_CAPACITY_16 command);
f = NO_REPORT_OPCODES (don't use report opcodes
@ -5019,17 +5019,18 @@
j = NO_REPORT_LUNS (don't use report luns
command, uas only);
l = NOT_LOCKABLE (don't try to lock and
unlock ejectable media);
unlock ejectable media, not on uas);
m = MAX_SECTORS_64 (don't transfer more
than 64 sectors = 32 KB at a time);
than 64 sectors = 32 KB at a time,
not on uas);
n = INITIAL_READ10 (force a retry of the
initial READ(10) command);
initial READ(10) command, not on uas);
o = CAPACITY_OK (accept the capacity
reported by the device);
reported by the device, not on uas);
p = WRITE_CACHE (the device cache is ON
by default);
by default, not on uas);
r = IGNORE_RESIDUE (the device reports
bogus residue values);
bogus residue values, not on uas);
s = SINGLE_LUN (the device has only one
Logical Unit);
t = NO_ATA_1X (don't allow ATA(12) and ATA(16)
@ -5038,7 +5039,8 @@
w = NO_WP_DETECT (don't test whether the
medium is write-protected).
y = ALWAYS_SYNC (issue a SYNCHRONIZE_CACHE
even if the device claims no cache)
even if the device claims no cache,
not on uas)
Example: quirks=0419:aaf5:rl,0421:0433:rc
user_debug= [KNL,ARM]