USB: storage: make the "quirks=" module parameter writable

This patch (as1190) makes usb-storage's "quirks=" module parameter
writable, so that users can add entries for their devices at runtime
with no need to reboot or reload usb-storage.

New codes are added for the SANE_SENSE, CAPACITY_HEURISTICS, and
CAPACITY_OK flags.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8eb6e35405cd..a58fc8b73398 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2396,14 +2396,21 @@ and is between 256 and 4096 characters. It is defined in the file
                         and Product ID values (4-digit hex numbers) and
                         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);
                                 c = FIX_CAPACITY (decrease the reported
                                         device capacity by one sector);
+                                h = CAPACITY_HEURISTICS (decrease the
+                                        reported device capacity by one
+                                        sector if the number is odd);
                                 i = IGNORE_DEVICE (don't bind to this
                                         device);
                                 l = NOT_LOCKABLE (don't try to lock and
                                         unlock ejectable media);
                                 m = MAX_SECTORS_64 (don't transfer more
                                         than 64 sectors = 32 KB at a time);
+                                o = CAPACITY_OK (accept the capacity
+                                        reported by the device);
                                 r = IGNORE_RESIDUE (the device reports
                                         bogus residue values);
                                 s = SINGLE_LUN (the device has only one