git.ipfire.org Git - thirdparty/kernel/stable-queue.git/blob

   1 From ed2983f458bed9dc827ec60c8486253b1669bb52 Mon Sep 17 00:00:00 2001
   2 From: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
   3 Date: Wed, 23 Aug 2017 04:46:55 -0700
   4 Subject: scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI MPT pass through command
   5
   6 From: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
   7
   8 commit ed2983f458bed9dc827ec60c8486253b1669bb52 upstream.
   9
  10 Driver allocated 256 byte MFI frames bytes but while sending MFI frame
  11 (embedded inside chain frame of MPT frame) to firmware, driver sets the
  12 length as 4k. This results in DMA read error messages during boot.
  13
  14 Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
  15 Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
  16 Reviewed-by: Hannes Reinecke <hare@suse.com>
  17 Reviewed-by: Tomas Henzl <thenzl@redhat.com>
  18 Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
  19 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  20
  21 ---
  22  drivers/scsi/megaraid/megaraid_sas_fusion.c |    2 +-
  23  1 file changed, 1 insertion(+), 1 deletion(-)
  24
  25 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
  26 +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
  27 @@ -3287,7 +3287,7 @@ build_mpt_mfi_pass_thru(struct megasas_i
  28         mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
  29                 MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
  30
  31 -       mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
  32 +       mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
  33  }
  34
  35  /**