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Groups > linux.kernel > #1579714

[PATCH 4.4 16/20] scsi: mpt3sas: disable ASPM for MPI2 controllers

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4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: ojab <ojab@ojab.ru>

commit ffdadd68af5a397b8a52289ab39d62e1acb39e63 upstream.

MPI2 controllers sometimes got lost (i.e. disappear from
/sys/bus/pci/devices) if ASMP is enabled.

Signed-off-by: Slava Kardakov <ojab@ojab.ru>
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=60644
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/mpt3sas/mpt3sas_scsih.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -51,6 +51,7 @@
 #include <linux/workqueue.h>
 #include <linux/delay.h>
 #include <linux/pci.h>
+#include <linux/pci-aspm.h>
 #include <linux/interrupt.h>
 #include <linux/aer.h>
 #include <linux/raid_class.h>
@@ -8483,6 +8484,8 @@ _scsih_probe(struct pci_dev *pdev, const
 
 	switch (hba_mpi_version) {
 	case MPI2_VERSION:
+		pci_disable_link_state(pdev, PCIE_LINK_STATE_L0S |
+			PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
 		/* Use mpt2sas driver host template for SAS 2.0 HBA's */
 		shost = scsi_host_alloc(&mpt2sas_driver_template,
 		  sizeof(struct MPT3SAS_ADAPTER));

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[PATCH 4.4 00/20] 4.4.49-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:10 +0100
  [PATCH 4.4 16/20] scsi: mpt3sas: disable ASPM for MPI2 controllers Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:10 +0100
  [PATCH 4.4 13/20] [PATCH] netvsc: Set maximum GSO size in the right place Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:10 +0100
  [PATCH 4.4 01/20] ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:10 +0100
  [PATCH 4.4 19/20] ALSA: seq: Dont handle loop timeout at snd_seq_pool_done() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:10 +0100
  [PATCH 4.4 08/20] target: Use correct SCSI status during EXTENDED_COPY exception Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 12/20] mac80211: Fix adding of mesh vendor IEs Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 17/20] xen-netfront: Delete rx_refill_timer in xennet_disconnect_backend() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 11/20] ARM: 8642/1: LPAE: catch pending imprecise abort on unmask Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 04/20] cpumask: use nr_cpumask_bits for parsing functions Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 07/20] target: Dont BUG_ON during NodeACL dynamic -> explicit conversion Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 06/20] ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 02/20] selinux: fix off-by-one in setprocattr Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  [PATCH 4.4 09/20] target: Fix early transport_generic_handle_tmr abort scenario Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-13 14:20 +0100
  Re: [PATCH 4.4 00/20] 4.4.49-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2017-02-13 18:20 +0100
  Re: [PATCH 4.4 00/20] 4.4.49-stable review Guenter Roeck <linux@roeck-us.net> - 2017-02-13 21:10 +0100
  Re: [PATCH 4.4 00/20] 4.4.49-stable review Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2017-02-15 12:50 +0100
    Re: [PATCH 4.4 00/20] 4.4.49-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-02-15 17:40 +0100

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