RE: [PATCH 03/39] megaraid_sas: raid 1 fast path code optimize

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> >
> >  /**
> > + * megasas_complete_r1_command -
> > + * completes R1 FP write commands which has valid peer smid
> > + * @instance:			Adapter soft state
> > + * @cmd_fusion:			MPT command frame
> > + *
> > + */
> > +static inline void
> > +megasas_complete_r1_command(struct megasas_instance *instance,
> > +			    struct megasas_cmd_fusion *cmd) {
> > +	u8 *sense, status, ex_status;
> > +	u32 data_length;
> > +	u16 peer_smid;
> > +	struct fusion_context *fusion;
> > +	struct megasas_cmd_fusion *r1_cmd = NULL;
> > +	struct scsi_cmnd *scmd_local = NULL;
> > +	struct RAID_CONTEXT_G35 *rctx_g35;
> > +
> > +	rctx_g35 = &cmd->io_request->RaidContext.raid_context_g35;
> > +	fusion = instance->ctrl_context;
> > +	peer_smid = le16_to_cpu(rctx_g35->smid.peer_smid);
> > +
> > +	r1_cmd = fusion->cmd_list[peer_smid - 1];
> > +	scmd_local = cmd->scmd;
> > +	status = rctx_g35->status;
> > +	ex_status = rctx_g35->ex_status;
> > +	data_length = cmd->io_request->DataLength;
> > +	sense = cmd->sense;
> > +
> > +	cmd->cmd_completed = true;
> > +
> > +	/* Check if peer command is completed or not*/
> > +	if (r1_cmd->cmd_completed) {
> > +		if (rctx_g35->status != MFI_STAT_OK) {
> > +			status = rctx_g35->status;
> > +			ex_status = rctx_g35->ex_status;
>
> Both status + ex_status were already set to the same value, why is it
> repeated here ?

Tomas, This need a fix. Raid context should be switch to r1_cmd, but it
that is not done here.
We want if r1 cmd is completed with failure, check status and extended
status from r1_cmd to send final status to mid layer.

We will fix this and resend patch. It will be like this -

	if (r1_cmd->cmd_completed) {
		rctx_g35 =
&r1_cmd->io_request->RaidContext.raid_context_g35;        << -This line
should be added.
		if (rctx_g35->status != MFI_STAT_OK) {
			status = rctx_g35->status;
			ex_status = rctx_g35->ex_status;

Thanks, Kashyap

>
> Tomas
>



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