USB: documentation: flags on usb-storage versus UAS

commit 65cc8bf99349f651a0a2cee69333525fe581f306 upstream.

Document which flags work storage, UAS or both

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20191114112758.32747-4-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[bwh: Backported to 3.16: Drop change relating to ALWAYS_SYNC]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8ab2913d839337d4088faefaa8f0b874dc18c938..01eb7cab04197f4f1acc70781caddf9b2baca54a 100644 (file)
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -3730,13 +3730,13 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                        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
@@ -3751,17 +3751,18 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
                                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)