xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

usb-storage/SCSI: Add broken_fua blacklist flag

Browse Source 
Some buggy JMicron USB-ATA bridges don't know how to translate the FUA
bit in READs or WRITEs.  This patch adds an entry in unusual_devs.h
and a blacklist flag to tell the sd driver not to use FUA.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Michael Büsch <m@bues.ch>
Tested-by: Michael Büsch <m@bues.ch>
Acked-by: James Bottomley <James.Bottomley@HansenPartnership.com>
CC: Matthew Dharm <mdharm-usb@one-eyed-alien.net>
CC: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern
2014-06-30 11:04:21 -04:00
committed by Greg Kroah-Hartman
parent ba1ba3a4ed
commit b14bf2d0c0
5 changed files with 19 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/storage/scsiglue.c
View File

@@ -256,6 +256,10 @@ static int slave_configure(struct scsi_device *sdev)
if (us->fflags & US_FL_WRITE_CACHE)
sdev->wce_default_on = 1;
/* A few buggy USB-ATA bridges don't understand FUA */
if (us->fflags & US_FL_BROKEN_FUA)
sdev->broken_fua = 1;
} else {
/* Non-disk-type devices don't need to blacklist any pages

7
drivers/usb/storage/unusual_devs.h
View File

@@ -1936,6 +1936,13 @@ UNUSUAL_DEV( 0x14cd, 0x6600, 0x0201, 0x0201,
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_IGNORE_RESIDUE ),
/* Reported by Michael Büsch <m@bues.ch> */
UNUSUAL_DEV( 0x152d, 0x0567, 0x0114, 0x0114,
"JMicron",
"USB to ATA/ATAPI Bridge",
USB_SC_DEVICE, USB_PR_DEVICE, NULL,
US_FL_BROKEN_FUA ),
/* Reported by Alexandre Oliva <oliva@lsd.ic.unicamp.br>
* JMicron responds to USN and several other SCSI ioctls with a
* residue that causes subsequent I/O requests to fail. */