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path: root/drivers/infiniband/hw/ipath/ipath_driver.c
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* IB/ipath: Change ipath_devdata.ipath_sdma_status to be unsigned longRoland Dreier2008-05-13
| | | | | | | | | | | | | | | Andrew Morton <akpm@linux-foundation.org> pointed out that bitops should take an unsigned long * arg. However, the ipath driver was doing bitops on struct ipath_devdata.ipath_sdma_status, which is u64. Change this member to unsigned long to avoid tons of warnings when x86 fixes the bitops to take unsigned long * instead of void *. Also, change the IPATH_SDMA_RUNNING and IPATH_SDMA_SHUTDOWN bit numbers to 30 and 31 (instead of 62 and 63) so that we're not setting another booby trap for someone who tries to make ipath work on a 32-bit architecture. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Make ipath_portdata work with struct pid * not pid_tPavel Emelyanov2008-05-13
| | | | | | | | | | | | | | | | | | | | | | | | The official reason is "with the presence of pid namespaces in the kernel using pid_t-s inside one is no longer safe." But the reason I fix this right now is the following: About a month ago (when 2.6.25 was not yet released) there still was a one last caller of a to-be-deprecated-soon function find_pid() - the kill_proc() function, which in turn was only used by nfs callback code. During the last merge window, this last caller was finally eliminated by some NFS patch(es) and I was about to finally kill this kill_proc() and find_pid(), but found, that I was late and the kill_proc is now called from the ipath driver since commit 58411d1c ("IB/ipath: Head of Line blocking vs forward progress of user apps"). So here's a patch that fixes this code to use struct pid * and (!) the kill_pid routine. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix SDMA error recovery in absence of link status changeJohn Gregor2008-05-07
| | | | | | | | | | | | | | | | | | | | | | | | What's fixed: in ipath_cancel_sends() We need to unconditionally set ABORTING. So, swap the tests so the set_bit() isn't shadowed by the &&. If we've disarmed the piobufs, then we need to unconditionally set DISARMED. So, move it out from the overly protective if at the bottom. in sdma_abort_task() Abort_task was written knowing that the SDMA engine would always be reset (and restarted) on error. A recent change broke that fundamental assumption by taking the restart portion and making it conditional on a link status change. But, SDMA can go boom without a link status change in some conditions. Signed-off-by: John Gregor <john.gregor@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Need to always request and handle PIO avail interruptsDave Olson2008-05-07
| | | | | | | | | | | | | | | | | | | | | | | | Now that we always use PIO for vl15 on 7220, we could get stuck forever if we happened to run out of PIO buffers from the verbs code, because the setup code wouldn't run; the interrupt was also ignored if SDMA was supported. We also have to reduce the pio update threshold if we have fewer kernel buffers than the existing threshold. Clean up the initialization a bit to get ordering safer and more sensible, and use the existing ipath_chg_kernavail call to do init, rather than doing it separately. Drop unnecessary clearing of pio buffer on pio parity error. Drop incorrect updating of pioavailshadow when exitting freeze mode (software state may not match chip state if buffer has been allocated and not yet written). If we couldn't get a kernel buffer for a while, make sure we are in sync with hardware, mainly to handle the exitting freeze case. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix count of packets received by kernelMichael Albaugh2008-05-07
| | | | | | | | | | | The loop in ipath_kreceive() that processes packets increments the loop-index 'i' once too often, because the exit condition does not depend on it, and is checked after the increment. By adding a check for !last to the iterator in the for loop, we correct that in a way that is not so likely to be re-broken by changes in the loop body. Signed-off-by: Michael Albaugh <micheal.albaugh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Correct capitalization "IntX" -> "INTx"Roland Dreier2008-04-21
| | | | | | Match what the PCI specification uses. Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Update copyright dates for files changed in 2008Ralph Campbell2008-04-17
| | | | | Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: add calls to new 7220 code and enable in buildDave Olson2008-04-17
| | | | | | | | | This patch adds the initialization calls into the new 7220 HCA files, changes the Makefile to compile and link the new files, and code to handle send DMA. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Misc changes to prepare for IB7220 introductionArthur Jones2008-04-17
| | | | | | | | | | | The patch adds a number of minor changes to support newer HCAs: - New send buffer control bits - New error condition bits - Locking and initialization changes - More send buffers Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix check for no interrupts to reliably fallback to INTxDave Olson2008-04-17
| | | | | | | | | Newer HCAs support MSI interrupts and also INTx interrupts. Fix the code so that INTx can be reliably enabled if MSI interrupts are not working. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Set LID filtering for HCAs that support it.Dave Olson2008-04-17
| | | | | | | | | Whenever the LID is set, notify the HCA specific code so that the appropriate HW registers can be updated. Also log the info on the console at low priority. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Add support for IBTA 1.2 HeartbeatDave Olson2008-04-17
| | | | | | | | This patch adds code to enable/disable the IBTA 1.2 heartbeat for testing if the HCA supports it. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Add support for 7220 receive queue changesRalph Campbell2008-04-17
| | | | | | | | | Newer HCAs have a HW option to write a sequence number to each receive queue entry and avoid a separate DMA of the tail register to memory. This patch adds support for these changes. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix some white space and code style issuesRalph Campbell2008-04-17
| | | | | | | | This patch makes some white space changes and minor non-functional changes to more closely match the code in OFED-1.3. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Make send buffers available for kernel if not allocated to userRalph Campbell2008-04-17
| | | | | | | | | | | | A fixed partitioning of send buffers is determined at driver load time for user processes and kernel use. Since send buffers are a scarce resource, it makes sense to allow the kernel to use the buffers if they are not in use by a user process. Also, eliminate code duplication for ipath_force_pio_avail_update(). Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Prevent link-recovery code from negating admin disableMichael Albaugh2008-04-17
| | | | | | | | | | | The link can be put in LINKDOWN_DISABLE state either locally or via a MAD. However, the link-recovery code will take it out of that state as a side-effect of attempts to clear SerDes/XGXS issues. We add a flag to indicate "link is down on purpose, leave it alone." Signed-off-by: Michael Albaugh <michael.albaugh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Remove some useless (void) castsRalph Campbell2008-04-17
| | | | | Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Change the module authorRalph Campbell2008-04-17
| | | | | | | Update the module author to the current email address. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: HW workaround for case where chip can send but not receiveDave Olson2008-04-17
| | | | | | | | | | Workaround a QLE7140 problem that in rare cases causes flow control problems after link recovery by forcing a link retrain after recovery. A module parameter is provided to control the behavior in case it causes problems. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Head of Line blocking vs forward progress of user appsJohn Gregor2008-04-17
| | | | | | | | | | | | | | | | There's a conflict between our need to quiesce PSM-based applications to avoid HoL blocking when the IB link goes down and the apps' desire to remain running so that their quiescence timout mechanism can keep running. The compromise is to STOP the processes for a fixed period of time and then alternate between CONT and STOP until the link is again active. If there are poor interactions with subnet manager configuration at a given site, the interval can be adjusted via a module paramter. Signed-off-by: John Gregor <john.gregor@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Enable 4KB MTUDave Olson2008-04-17
| | | | | | | | | | | Enable use of 4KB MTU. Since the driver uses more pinned memory for receive buffers when the 4KB MTU is enabled, whether or not the fabric supports that MTU, add a "mtu4096" module parameter that can be used to limit the MTU to 2KB when it is known that 4KB MTUs can't be used anyway. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix sparse warning about pointer signednessArthur Jones2008-04-17
| | | | | | | | | | | | | There's no reason for the third parameter of ipath_count_units() to be a u32 *, so change it to be an int * instead. This fixes the sparse warning: drivers/infiniband/hw/ipath/ipath_file_ops.c:1654:47: warning: incorrect type in argument 3 (different signedness) drivers/infiniband/hw/ipath/ipath_file_ops.c:1654:47: expected unsigned int [usertype] *maxportsp drivers/infiniband/hw/ipath/ipath_file_ops.c:1654:47: got int *<noident> Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix IB compliance problems with link state vs physical stateRalph Campbell2008-03-11
| | | | | | | | | | | | | | Subnet manager SetPortinfo messages distingush between changing the link state (DOWN, ARM, ACTIVE) and the link physical state (POLL, SLEEP, DISABLED). These are somewhat independent commands and affect when link width and speed changes take effect. Without this patch, a link DOWN physical state NOP command was causing the link width and speed settings to take effect which should only happen when the link physical state is goes down (either by a SMP or some link physical error like link errors exceeding the threshold). Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Changes to support PIO bandwidth check on IBA7220Dave Olson2008-01-25
| | | | | | | | | | | The IBA7220 uses a count-based triggering mechanism, and therefore can't use the same bandwidth verification mechanism as older chips. To support the 7220, allow enabling and disabling armlaunch errors on application request. Minor robustness improvements as well. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Remove unused MDIO interface codeDave Olson2008-01-25
| | | | | | | | This code has been unused for some time, but still had leftovers from when it was used. Signed-off-by: Dave Olson <dave.olson@qlogic.com Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Add flag and handling for chips with swapped register bugRalph Campbell2008-01-25
| | | | | | | | | The 6110 had a bug that caused some registers to be swapped; it was fixed for the 7220 (and didn't affect the 6120 because it had fewer registers). This adds a flag and related code to handle that, and includes some minor cleanups in the same area. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
* IB/ipath: Clean up some commentsDave Olson2008-01-25
| | | | | Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: kreceive uses portdata rather than devdataRalph Campbell2008-01-25
| | | | | | | | kreceive is now portdata * instead of devdata * and other kreceive related cleanups.... Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Cleanup ipath_get_egrbuf()Ralph Campbell2008-01-25
| | | | | | | Remove an unused parameter and fix up the comment. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix sendctrl lockingJohn Gregor2008-01-25
| | | | | | | | Code review pointed out that the locking around uses of ipath_sendctrl and kr_sendctrl were, in several places, incorrect and/or inconsistent. Signed-off-by: John Gregor <john.gregor@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* Infiniband: make ipath driver use default driver groups.Greg Kroah-Hartman2008-01-24
| | | | | | | | | | | | | | | | Make the ipath driver use the new driver functions so that it does not touch the sysfs portion of the driver structure. We also remove the redundant symlink from the device back to the driver, as it is already in the sysfs tree. Any userspace tools should be using the standard symlink, not some driver specific one. Cc: Roland Dreier <rdreier@cisco.com> Cc: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Cc: Arthur Jones <arthur.jones@qlogic.com> Cc: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* IB/ipath: Fix IB_EVENT_PORT_ERR eventRalph Campbell2007-10-10
| | | | | | | | | | The link state event calls were being generated when the SM told the SMA to change link states. This works for IB_EVENT_PORT_ACTIVE but not if the link goes down and stays down. The fix is to generate event calls from the interrupt handler when the HW link state changes. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Remove redundant codeRalph Campbell2007-10-09
| | | | | | | This patch removes some redundant initialization code. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Verify host bus bandwidth to chip will not limit performanceDave Olson2007-10-09
| | | | | | | | | | There have been a number of issues where host bandwidth via HT or PCIe to the InfiniPath chip has been limited in some fashion (BIOS, configuration, etc.), resulting in user confusion. This check gives a clear warning that something is wrong and needs to be resolved. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Fix some issues with buffer cancel and sendctrl register updateDave Olson2007-07-30
| | | | | | | | | | There was confused use of INFINIPATH_S_PIOBUFAVAILUPD (value) and IPATH_S_PIOBUFAVAILUPD (bit position). Also, some callers of ipath_cancel_sends() need kr_sendctrl restored, and some want to do it later. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Make a few functions staticRoland Dreier2007-07-17
| | | | | | | | | | | | | | | | | Make some functions that are only used in a single .c file static. In addition to being a cleanup, this shrinks the generated code. On x86_64: add/remove: 1/3 grow/shrink: 2/1 up/down: 4777/-4956 (-179) function old new delta handle_errors - 3994 +3994 __verbs_timer 42 710 +668 ipath_do_ruc_send 2131 2246 +115 ipath_no_bufs_available 136 - -136 ipath_disarm_senderrbufs 639 - -639 ipath_ib_timer 658 - -658 ipath_intr 5878 2355 -3523 Signed-off-by: Roland Dreier <rolandd@cisco.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2007-07-12
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (76 commits) IB: Update MAINTAINERS with Hal's new email address IB/mlx4: Implement query SRQ IB/mlx4: Implement query QP IB/cm: Send no match if a SIDR REQ does not match a listen IB/cm: Fix handling of duplicate SIDR REQs IB/cm: cm_msgs.h should include ib_cm.h IB/cm: Include HCA ACK delay in local ACK timeout IB/cm: Use spin_lock_irq() instead of spin_lock_irqsave() when possible IB/sa: Make sure SA queries use default P_Key IPoIB: Recycle loopback skbs instead of freeing and reallocating IB/mthca: Replace memset(<addr>, 0, PAGE_SIZE) with clear_page(<addr>) IPoIB/cm: Fix warning if IPV6 is not enabled IB/core: Take sizeof the correct pointer when calling kmalloc() IB/ehca: Improve latency by unlocking after triggering the hardware IB/ehca: Notify consumers of LID/PKEY/SM changes after nondisruptive events IB/ehca: Return QP pointer in poll_cq() IB/ehca: Change idr spinlocks into rwlocks IB/ehca: Refactor sync between completions and destroy_cq using atomic_t IB/ehca: Lock renaming, static initializers IB/ehca: Report RDMA atomic attributes in query_qp() ...
| * IB/ipath: Test interrupts at driver startupArthur Jones2007-07-09
| | | | | | | | | | | | | | | | | | | | All too often, interrupts do not get enabled for our card due to BIOS misconfiguration and other issues. This patch checks for that condition on startup and warns the user. This patch is based on work (check LID availability) by Robert Walsh. Signed-off-by: Arthur Jones <arthur.jones@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Remove support for preproduction HTX InfiniPath cardsRalph Campbell2007-07-09
| | | | | | | | | | | | | | Clean up some code by removing support for some older pre-production HTX InfiniPath cards. Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
| * IB/ipath: Update copyright datesJohn Gregor2007-07-09
| | | | | | | | | | | | | | | | Now that it's June, it's about time to update the copyright notices of files that have changed. Signed-off-by: John Gregor <john.gregor@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Use S_ABORT not cancel and abort on exit freeze mode after recoveryDave Olson2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | | This centralizes the use of the abort functionality, removes the unneeded buffer cancel (abort does the same thing), sets up to ignore launch errors after abort, same as cancel. We need abort on exit from freeze mode to avoid having buffers stuck in the busy state, if a user process happened to complete the send while we were in freeze mode doing the recovery. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Log "active" time and some errors to EEPROMMichael Albaugh2007-07-09
| | | | | | | | | | | | | | | | | | | | We currently track various errors, now we enhance that capability by logging some of them to EEPROM. We also now log a cumulative "active" time defined by traffic though the InfiniPath HCA beyond the normal SM traffic. Signed-off-by: Michael Albaugh <michael.albaugh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
| * IB/ipath: Support blinking LEDs with an led_override fileMichael Albaugh2007-07-09
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we want to find an InfiniPath HCA in a rack of nodes, it is often expeditious to blink the status LEDs via a userspace /sys file. A write-only led_override "file" is published per device. Writes to this file are interpreted as (string form) numbers, and the resulting value sent to ipath_set_led_override(). The upper eight bits are interpretted as a 4.4 fixed-point "frequency in Hertz", and the bottom two 4-bit values are alternately (D0..3, then D4..7) used by the board-specific LED-setting function to override the normal state. Signed-off-by: Michael Albaugh <michael.albaugh@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* | PCI: Change all drivers to use pci_device->revisionAuke Kok2007-07-11
|/ | | | | | | | | | | | | | | | | | | | Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Acked-by: Dave Jones <davej@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* IB/ipath: Disable IB link earlier in shutdown sequenceBryan O'Sullivan2007-04-18
| | | | | | | | | Move the code that shuts down the IB link earlier in the unload process, to be sure no new packets can arrive while we are unloading. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Improve handling and reporting of parity errorsBryan O'Sullivan2007-04-18
| | | | | | | | Mostly cleanup. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Print better error messages if kernel is misconfiguredBryan O'Sullivan2007-04-18
| | | | | Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Call free_irq() on chip specific initialization failureArthur Jones2007-04-18
| | | | | | | | In initialization, if we bailed at chip specific initialization, we forgot to clean up the irq we had requested. Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Remove unused ipath_read_kreg64_port()Bryan O'Sullivan2007-04-18
| | | | | | Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* IB/ipath: Change packet problems vs chip errors handling and reportingBryan O'Sullivan2007-04-18
| | | | | | | | | | | | | | | Some types of packet errors are moderately common with longer IB cables and large clusters, and are not reported with prints by other IB HCA drivers. This suppresses those messages unless the new __IPATH_ERRPKTDBG bit is set in ipath_debug. Reporting of temporarily disabled frequent error interrupts was also made clearer We also distinguish between chip errors, and bad packets sent or received in the wording of the messages. Signed-off-by: Dave Olson <dave.olson@qlogic.com> Signed-off-by: Bryan O'Sullivan <bryan.osullivan@qlogic.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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