From: Shivasharan S Date: Wed, 23 Aug 2017 11:46:55 +0000 (-0700) Subject: scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI... X-Git-Tag: v4.13.4~43 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=f16b3525f0918adc3adcd59fba79f34aca64c781;p=users%2Fdwmw2%2Flinux.git scsi: megaraid_sas: mismatch of allocated MFI frame size and length exposed in MFI MPT pass through command commit ed2983f458bed9dc827ec60c8486253b1669bb52 upstream. 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 Signed-off-by: Shivasharan S Reviewed-by: Hannes Reinecke Reviewed-by: Tomas Henzl Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index 985510628f564..8152962f152df 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -3287,7 +3287,7 @@ 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); } /**