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path: root/drivers/scsi/mpt3sas/mpt3sas_transport.c
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* scsi: mpt3sas: function pointers of request descriptorSuganath Prabu S2019-06-191-4/+4
| | | | | | | | | | | | This code refactoring introduces function pointers. Host uses Request Descriptors of different types for posting an entry onto a request queue. Based on controller type and capabilities, host can also use atomic descriptors other than normal descriptors. Using function pointer will avoid if-else statements Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Call sas_remove_host before removing the target devicesSuganath Prabu2018-11-071-2/+5
| | | | | | | | | | | | | | | | | | Call sas_remove_host() before removing the target devices in the driver's .remove() callback function(i.e. during driver unload time). So that driver can provide a way to allow SYNC CACHE, START STOP unit commands etc. (which are issued from SML) to the target drives during driver unload time. Once sas_remove_host() is called before removing the target drives then driver can just clean up the resources allocated for target devices and no need to call sas_port_delete_phy(), sas_port_delete() API's as these API's internally called from sas_remove_host(). Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Separate out mpt3sas_wait_for_iocSuganath Prabu2018-11-071-72/+12Star
| | | | | | | | | | | No functional changes. This section of code "wait for IOC to be operational" is used in many places across the driver. Factor this code out into a new mpt3sas_wait_for_ioc(). Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Added new #define variable IOC_OPERATIONAL_WAIT_COUNTSuganath Prabu2018-11-071-4/+4
| | | | | | | | | | | Added new #define variable IOC_OPERATIONAL_WAIT_COUNT and it replaces hard coded value '10' in all the places where driver is waiting for the IOC to become operational. Signed-off-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Reviewed-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: switch to generic DMA APIChristoph Hellwig2018-10-181-8/+10
| | | | | | | | | | Switch from the legacy PCI DMA API to the generic DMA API. Also simplify setting the DMA mask a bit. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Convert logging uses with MPT3SAS_FMT without logging levelsJoe Perches2018-10-111-3/+3
| | | | | | | | Convert these uses to ioc_<level> where appropriate. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Convert mlsleading uses of pr_<level> with MPT3SAS_FMTJoe Perches2018-10-111-12/+6Star
| | | | | | | | | | | These have misordered uses of __func__ and ioc->name that could mismatch MPT3SAS_FMT and "%s: ". Convert them to ioc_<level>. Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Convert uses of pr_<level> with MPT3SAS_FMT to ioc_<level>Joe Perches2018-10-111-173/+140Star
| | | | | | | | | | | | | | | | | | | | | | | Use a more common logging style. Done using the perl script below and some typing $ git grep --name-only -w MPT3SAS_FMT -- "*.c" | \ xargs perl -i -e 'local $/; while (<>) { s/\bpr_(info|err|notice|warn)\s*\(\s*MPT3SAS_FMT\s*("[^"]+"(?:\s*\\?\s*"[^"]+"\s*){0,5}\s*),\s*ioc->name\s*/ioc_\1(ioc, \2/g; print;}' Miscellanea for these conversions: o Coalesce formats o Realign arguments o Remove unnecessary parentheses o Use casts to u64 instead of unsigned long long where appropriate o Convert broken pr_info uses to pr_cont o Fix broken format string concatenation with line continuations and excess whitespace Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Suganath Prabu <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Improve kernel-doc headersBart Van Assche2018-06-201-33/+22Star
| | | | | | | | | | | | | Avoids that warnings about the kernel headers appear when building with W=1. Remove useless "@Returns - Nothing" clauses. Change "@Return - " into "Return: ". Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Chaitra P B <chaitra.basappa@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Fix _transport_smp_handler() error pathBart Van Assche2018-06-201-2/+3
| | | | | | | | | | | | | | | This patch avoids that smatch complains about a double unlock on ioc->transport_cmds.mutex. Fixes: 651a01364994 ("scsi: scsi_transport_sas: switch to bsg-lib for SMP passthrough") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Chaitra P B <chaitra.basappa@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Cc: stable@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Fix indentationBart Van Assche2018-06-201-1/+1
| | | | | | | | | | | Modify the indentation such that smatch no longer complains about inconsistent indenting. Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Chaitra P B <chaitra.basappa@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: mpt3sas: Do not use 32-bit atomic request descriptor for Ventura ↵Suganath Prabu S2018-02-281-4/+4
| | | | | | | | | | | | | | | | controllers. Sending I/O through 32 bit descriptors to Ventura series of controller results in IO timeout on certain conditions. This error only occurs on systems with high I/O activity. Changes in this patch will prevent driver from using 32 bit descriptor and use 64 bit Descriptors Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_sas: switch to bsg-lib for SMP passthroughChristoph Hellwig2017-08-301-140/+90Star
| | | | | | | | | | | | | | | | | | Simplify the SMP passthrough code by switching it to the generic bsg-lib helpers that abstract away the details of the request code, and gets drivers out of seeing struct scsi_request. For the libsas host SMP code there is a small behavior difference in that we now always clear the residual len for successful commands, similar to the three other SMP handler implementations. Given that there is no partial command handling in the host SMP handler this should not matter in practice. [mkp: typos and checkpatch fixes] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* block: split scsi_request out of struct requestChristoph Hellwig2017-01-271-4/+4
| | | | | | | | | | And require all drivers that want to support BLOCK_PC to allocate it as the first thing of their private data. To support this the legacy IDE and BSG code is switched to set cmd_size on their queues to let the block layer allocate the additional space. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* scsi: mpt3sas: Use the new MPI 2.6 32-bit Atomic Request Descriptors for ↵Suganath Prabu Subramani2016-11-081-4/+4
| | | | | | | | | | | | | SAS35 devices. Support Atomic Request Descriptors for Ventura/SAS35 devices. Signed-off-by: Chaitra P B <chaitra.basappa@broadcom.com> Signed-off-by: Sathya Prakash <sathya.prakash@broadcom.com> Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Fix warnings exposed by W=1Calvin Owens2016-08-091-12/+4Star
| | | | | | | | | | | | | | | | | | | | | Trivial non-functional changes for a couple annoying things: 1) Functions local to files are not declared static, which is frustrating when reading the code because it's non-obvious at first glance what's actually called from other files. 2) Set-but-unused variables abound, presumably to mask -Wunused-result errors in the past. None of these are flagged today though (with one exception noted below), so remove them. Fixing (2) exposed the fact that we improperly ignore the return value of scsi_device_reprobe() in _scsih_reprobe_lun(). Fixing the calling code to deal with the potential error is non-trivial, so for now just WARN(). Signed-off-by: Calvin Owens <calvinowens@fb.com> Acked-by: Chaitra P B <chaitra.basappa@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Eliminate dead sleep_flag codeCalvin Owens2016-08-091-8/+4Star
| | | | | | | | | With the exception of a single call to wait_for_doorbell_int(), all this conditional sleeping code is dead. So delete it. Signed-off-by: Calvin Owens <calvinowens@fb.com> Acked-by: Chaitra P B <chaitra.basappa@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: avoid mpt3sas_transport_port_add NULL parent_devJoe Lawrence2016-07-131-0/+5
| | | | | | | | | | | If _scsih_sas_host_add's call to mpt3sas_config_get_sas_iounit_pg0 fails, ioc->sas_hba.parent_dev may be left uninitialized. A later device probe could invoke mpt3sas_transport_port_add which will call sas_port_alloc_num [scsi_transport_sas] with a NULL parent_dev pointer. Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com> Acked-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Fix static analyzer(coverity) tool identified defectsSuganath prabu Subramani2016-02-241-1/+1
| | | | | | | | | | | | | | | | 1.Wrong size of argument is being passed The size of struct being passed as an argument to memset func and area of memory being pointed by an instance of struct in memset func should be of same structure type. 2.Dereference null return value 3.Array compared against '0' Check whether value pointed by particular index of an array is null or not in "if" statement. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Used IEEE SGL instead of MPI SGL while framing a SMP Passthrough ↵Suganath prabu Subramani2016-02-241-19/+4Star
| | | | | | | | | | | | | | request message. As driver was using MPI SGL while framing the SMP Passthrough request message due to which firmware unable to post the Reply Data in the host memory and timeout is observed for this SMP Passthrough request message and so unable to perform phy disable operation. Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com> Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Refcount sas_device objects and fix unsafe list usageSreekanth Reddy2015-11-121-6/+12
| | | | | | | | | | | | | | | | | | | | sas_device objects can be referenced concurrently throughout the driver. We need a way to make sure threads can't delete them out from under each other. This patch adds the refcount and refactors the code to use it. Additionally, we cannot iterate over the sas_device_list without holding the lock or we risk corrupting random memory if items are added or deleted as we iterate. This patch refactors _scsih_probe_sas() to use the sas_device_list in a safe way. This patch is ported from the following mpt2sas driver commit d224fe0d6097 ("mpt2sas: Refcount sas_device objects and fix unsafe list usage"). Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Acked-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* mpt3sas: Call dma_mapping_error() API after mapping an address with ↵Sreekanth Reddy2015-08-271-2/+2
| | | | | | | | | | | | | | dma_map_single() API Added dma_mapping_error() API after mapping an address with dma_map_single() API. Otherwise when CONFIG_DMA_API_DEBUG is enabled in the kernel, then it complains about mpt3sas driver not calling dma_mapping_error after mapping an address with dma_map_single Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* mpt3sas: Don't block the drive when drive addition under the control of SMLSreekanth Reddy2015-08-271-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | During hot-plugging of a disk(having a flaky link), the disk addition stops and any further disk addition or removal doesn't happen on that controller. This is because, when driver receives DELAY_NOT_RESPONDING event for a disk while it is undergoing addition at the SCSI Transport layer, the driver would block the I/O to that disk resulting in a deadlock. i.e the disk addition work couldn't be completed at the SCSI Transport Layer as it can't send any I/Os (such as Inquiry, Report LUNs etc) to the disk as I/Os are blocked to this drive. Also any subsequent device removal (TARGET_NOT_RESPONDING) or link update(RC_PHY_CHANGED) event couldn't be processed as they are in the queue to get processed after disk addition event. Description of Change: Don't block the drive when drive addition is under the control of SML. So that SML won't be blocked of issuing the device dicovery commands (such as Inquiry, Report LUNs etc). Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* mpt2sas, mpt3sas: Update attribution language to AvagoSreekanth Reddy2015-01-131-1/+2
| | | | | | | | | Copyright, Trademark & Confidentiality legal statements throughout the source code changed from LSI to Avago. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* Revert "[SCSI] mpt3sas: Remove phys on topology change"Sreekanth Reddy2014-12-041-4/+1Star
| | | | | | | | | | | | | | | | | | | | This reverts commit 963ba22b90a955363644cd397b20226928eab976 ("mpt3sas: Remove phys on topology change") Reverting the previous mpt3sas drives patch changes, since we will observe below issue Issue: Drives connected Enclosure/Expander will unregister with SCSI Transport Layer, if any one remove and add expander cable with in DMD (Device Missing Delay) time period or even any one power-off and power-on the Enclosure with in the DMD period. Cc: <stable@vger.kernel.org> Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* mpt3sas: Copyright in driver sources is updated for year the 2014.Sreekanth Reddy2014-09-161-1/+1
| | | | | | | | Copyright in driver sources is updated for year the 2014. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* block: Kill bio_segments()/bi_vcnt usageKent Overstreet2013-11-241-4/+4
| | | | | | | | | | | | | | | | | | | | | | When we start sharing biovecs, keeping bi_vcnt accurate for splits is going to be error prone - and unnecessary, if we refactor some code. So bio_segments() has to go - but most of the existing users just needed to know if the bio had multiple segments, which is easier - add a bio_multiple_segments() for them. (Two of the current uses of bio_segments() are going to go away in a couple patches, but the current implementation of bio_segments() is unsafe as soon as we start doing driver conversions for immutable biovecs - so implement a dumb version for bisectability, it'll go away in a couple patches) Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Neil Brown <neilb@suse.de> Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com> Cc: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
* block: Convert bio_for_each_segment() to bvec_iterKent Overstreet2013-11-241-15/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | More prep work for immutable biovecs - with immutable bvecs drivers won't be able to use the biovec directly, they'll need to use helpers that take into account bio->bi_iter.bi_bvec_done. This updates callers for the new usage without changing the implementation yet. Signed-off-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: "Ed L. Cashin" <ecashin@coraid.com> Cc: Nick Piggin <npiggin@kernel.dk> Cc: Lars Ellenberg <drbd-dev@lists.linbit.com> Cc: Jiri Kosina <jkosina@suse.cz> Cc: Paul Clements <Paul.Clements@steeleye.com> Cc: Jim Paris <jim@jtan.com> Cc: Geoff Levand <geoff@infradead.org> Cc: Yehuda Sadeh <yehuda@inktank.com> Cc: Sage Weil <sage@inktank.com> Cc: Alex Elder <elder@inktank.com> Cc: ceph-devel@vger.kernel.org Cc: Joshua Morris <josh.h.morris@us.ibm.com> Cc: Philip Kelleher <pjk1939@linux.vnet.ibm.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Neil Brown <neilb@suse.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: linux390@de.ibm.com Cc: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com> Cc: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Cc: support@lsi.com Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> Cc: Tejun Heo <tj@kernel.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Guo Chao <yan@linux.vnet.ibm.com> Cc: Asai Thambi S P <asamymuthupa@micron.com> Cc: Selvan Mani <smani@micron.com> Cc: Sam Bradshaw <sbradshaw@micron.com> Cc: Matthew Wilcox <matthew.r.wilcox@intel.com> Cc: Keith Busch <keith.busch@intel.com> Cc: Stephen Hemminger <shemminger@vyatta.com> Cc: Quoc-Son Anh <quoc-sonx.anh@intel.com> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Cc: Nitin Gupta <ngupta@vflare.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Jerome Marchand <jmarchan@redhat.com> Cc: Seth Jennings <sjenning@linux.vnet.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Mike Snitzer <snitzer@redhat.com> Cc: Vivek Goyal <vgoyal@redhat.com> Cc: "Darrick J. Wong" <darrick.wong@oracle.com> Cc: Chris Metcalf <cmetcalf@tilera.com> Cc: Jan Kara <jack@suse.cz> Cc: linux-m68k@lists.linux-m68k.org Cc: linuxppc-dev@lists.ozlabs.org Cc: drbd-user@lists.linbit.com Cc: nbd-general@lists.sourceforge.net Cc: cbe-oss-dev@lists.ozlabs.org Cc: xen-devel@lists.xensource.com Cc: virtualization@lists.linux-foundation.org Cc: linux-raid@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: DL-MPTFusionLinux@lsi.com Cc: linux-scsi@vger.kernel.org Cc: devel@driverdev.osuosl.org Cc: linux-fsdevel@vger.kernel.org Cc: cluster-devel@redhat.com Cc: linux-mm@kvack.org Acked-by: Geoff Levand <geoff@infradead.org>
* [SCSI] mpt3sas: Remove phys on topology changeJan Vesely2013-09-031-1/+4
| | | | | | Signed-off-by: Jan Vesely <jvesely@redhat.com> Acked-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] mpt3sas: 2013 source code copyrightSreekanth Reddy2013-07-091-1/+1
| | | | | | | The Copyright String in all mpt3sas files are changed to 2012-2013. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] mpt3sas: add new driver supporting 12GB SASSreekanth Reddy2012-12-011-0/+2128
These driver files are initially, substantially similar to mpt2sas but, because mpt2sas is going into maintenance mode and mp3sas will become heavily developed, we elected to keep the code bases separate. Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com> Reviewed-by: Nagalakshmi Nandigama <Nagalakshmi.Nandigama@lsi.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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