scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI...

Driver allocated 256 byte MFI frames bytes but while sending MFI frame
(embedded inside chain frame of MPT frame) to firmware, driver sets the
length as 4k. This results in DMA read error messages during boot.

Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@broadcom.com>
Cc: stable@vger.kernel.org
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
index 6b9db737895f91e2bff47c6d6f75da4a69bcd554..84cd4f80bf013fefe0b571e9c33ef188aaecafb1 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
@@ -3289,7 +3289,7 @@ build_mpt_mfi_pass_thru(struct megasas_instance *instance,
        mpi25_ieee_chain->Flags = IEEE_SGE_FLAGS_CHAIN_ELEMENT |
                MPI2_IEEE_SGE_FLAGS_IOCPLBNTA_ADDR;
 
-       mpi25_ieee_chain->Length = cpu_to_le32(instance->max_chain_frame_sz);
+       mpi25_ieee_chain->Length = cpu_to_le32(instance->mfi_frame_size);
 }
 
 /**