scsi: introduce a quirk for false cache reporting

[mirror_ubuntu-artful-kernel.git] / drivers / usb / storage / usb.c

diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c
index c8afd2d4c40b70a245615c08471ac1ae3d6a6fc2..2cba13a532cd82b2a4a53ddf853eced763e7f852 100644 (file)
--- a/drivers/usb/storage/usb.c
+++ b/drivers/usb/storage/usb.c
@@ -498,7 +498,8 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
                        US_FL_NO_READ_DISC_INFO | US_FL_NO_READ_CAPACITY_16 |
                        US_FL_INITIAL_READ10 | US_FL_WRITE_CACHE |
                        US_FL_NO_ATA_1X | US_FL_NO_REPORT_OPCODES |
-                       US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS);
+                       US_FL_MAX_SECTORS_240 | US_FL_NO_REPORT_LUNS |
+                       US_FL_ALWAYS_SYNC);
 
        p = quirks;
        while (*p) {
@@ -581,6 +582,9 @@ void usb_stor_adjust_quirks(struct usb_device *udev, unsigned long *fflags)
                case 'w':
                        f |= US_FL_NO_WP_DETECT;
                        break;
+               case 'y':
+                       f |= US_FL_ALWAYS_SYNC;
+                       break;
                /* Ignore unrecognized flag characters */
                }
        }