android_kernel_samsung_msm8976/include/scsi
Huacai Chen ad40571b7a scsi: libsas: align sata_device's rps_resp on a cacheline
commit c2e8fbf908afd81ad502b567a6639598f92c9b9d upstream.

The rps_resp buffer in ata_device is a DMA target, but it isn't
explicitly cacheline aligned. Due to this, adjacent fields can be
overwritten with stale data from memory on non-coherent architectures.
As a result, the kernel is sometimes unable to communicate with an SATA
device behind a SAS expander.

Fix this by ensuring that the rps_resp buffer is cacheline aligned.

This issue is similar to that fixed by Commit 84bda12af3 ("libata:
align ap->sector_buf") and Commit 4ee34ea3a12396f35b26 ("libata: Align
ata_device's id on a cacheline").

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
2019-07-27 21:46:11 +02:00
..
fc
fc_encode.h
fc_frame.h
fcoe_sysfs.h
iscsi_if.h
iscsi_proto.h
libfc.h
libfcoe.h
libiscsi.h
libiscsi_tcp.h
libsas.h
libsrp.h
osd_attributes.h
osd_initiator.h
osd_ore.h
osd_protocol.h
osd_sec.h
osd_sense.h
osd_types.h
sas.h
sas_ata.h
scsi.h
scsi_bsg_iscsi.h
scsi_cmnd.h
scsi_dbg.h
scsi_device.h
scsi_devinfo.h
scsi_dh.h
scsi_driver.h
scsi_eh.h
scsi_host.h
scsi_tcq.h
scsi_tgt.h
scsi_tgt_if.h
scsi_transport.h
scsi_transport_fc.h
scsi_transport_iscsi.h
scsi_transport_sas.h
scsi_transport_spi.h
scsi_transport_srp.h
scsicam.h
srp.h