3.13.11.6 -stable review patch. If anyone has any objections, please let me know.
------------------ From: Alan Stern <[email protected]> commit b14bf2d0c0358140041d1c1805a674376964d0e0 upstream. 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 <[email protected]> Reported-by: Michael Büsch <[email protected]> Tested-by: Michael Büsch <[email protected]> Acked-by: James Bottomley <[email protected]> CC: Matthew Dharm <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> [ kamal: backport to 3.13-stable (sd_printk; context) ] Signed-off-by: Kamal Mostafa <[email protected]> --- drivers/scsi/sd.c | 5 ++++- drivers/usb/storage/scsiglue.c | 4 ++++ drivers/usb/storage/unusual_devs.h | 7 +++++++ include/linux/usb_usual.h | 6 ++++-- include/scsi/scsi_device.h | 1 + 5 files changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 410be82..8ee2f56 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2454,7 +2454,10 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) } sdkp->DPOFUA = (data.device_specific & 0x10) != 0; - if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) { + if (sdp->broken_fua) { + sd_printk(KERN_NOTICE, sdkp, "Disabling FUA\n"); + sdkp->DPOFUA = 0; + } else if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) { sd_printk(KERN_NOTICE, sdkp, "Uses READ/WRITE(6), disabling FUA\n"); sdkp->DPOFUA = 0; diff --git a/drivers/usb/storage/scsiglue.c b/drivers/usb/storage/scsiglue.c index 9d38ddc..866b5df 100644 --- a/drivers/usb/storage/scsiglue.c +++ b/drivers/usb/storage/scsiglue.c @@ -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 diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 042c83b0..e2d0050 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -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 <[email protected]> */ +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 <[email protected]> * JMicron responds to USN and several other SCSI ioctls with a * residue that causes subsequent I/O requests to fail. */ diff --git a/include/linux/usb_usual.h b/include/linux/usb_usual.h index 6303568..b2a709b 100644 --- a/include/linux/usb_usual.h +++ b/include/linux/usb_usual.h @@ -67,8 +67,10 @@ /* Initial READ(10) (and others) must be retried */ \ US_FLAG(WRITE_CACHE, 0x00200000) \ /* Write Cache status is not available */ \ - US_FLAG(NEEDS_CAP16, 0x00400000) - /* cannot handle READ_CAPACITY_10 */ + US_FLAG(NEEDS_CAP16, 0x00400000) \ + /* cannot handle READ_CAPACITY_10 */ \ + US_FLAG(BROKEN_FUA, 0x01000000) \ + /* Cannot handle FUA in WRITE or READ CDBs */ \ #define US_FLAG(name, value) US_FL_##name = value , enum { US_DO_ALL_FLAGS }; diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index d65fbec..8e6b70f 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -167,6 +167,7 @@ struct scsi_device { unsigned is_visible:1; /* is the device visible in sysfs */ unsigned wce_default_on:1; /* Cache is ON by default */ unsigned no_dif:1; /* T10 PI (DIF) should be disabled */ + unsigned broken_fua:1; /* Don't set FUA bit */ atomic_t disk_events_disable_depth; /* disable depth for disk events */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
