From 65cc8bf99349f651a0a2cee69333525fe581f306 Mon Sep 17 00:00:00 2001

From: Oliver Neukum <oneukum@suse.com>

Date: Thu, 14 Nov 2019 12:27:58 +0100

Subject: [PATCH] USB: documentation: flags on usb-storage versus UAS

Git-commit: 65cc8bf99349f651a0a2cee69333525fe581f306

Patch-mainline: v5.5-rc1

References: bsc#1051510

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>

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 Documentation/admin-guide/kernel-parameters.txt | 22 ++++++++++++----------

 1 file changed, 12 insertions(+), 10 deletions(-)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt

index a84a83f8881e..a02b1799a756 100644

--- a/Documentation/admin-guide/kernel-parameters.txt

+++ b/Documentation/admin-guide/kernel-parameters.txt

@@ -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]

-- 

2.16.4