Re: [PATCH v1 12/12] scsi: ufs: Improve fatal error logs

[Subhash Jadavani]

On 2016-12-12 17:19, Joe Perches wrote:
> On Mon, 2016-12-12 at 16:56 -0800, Subhash Jadavani wrote:
> > Errors such as UIC error, illegal OCS values, and others may require
> > more information for debugging. Such information could be hibern8 
> > events,
> > events sequences, recoverable errors, error history, and more.
> []
> > diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> []
> > @@ -346,6 +346,37 @@ static inline void 
> > ufshcd_cond_add_cmd_trace(struct ufs_hba *hba,
> []
> > +static void ufshcd_print_uic_err_hist(struct ufs_hba *hba,
> > +		struct ufs_uic_err_reg_hist *err_hist, char *err_name)
> > +{
> > +	int i;
> > +
> > +	for (i = 0; i < UIC_ERR_REG_HIST_LENGTH; i++) {
> > +		int p = (i + err_hist->pos - 1) % UIC_ERR_REG_HIST_LENGTH;
> > +
> > +		if (err_hist->reg[p] == 0)
> > +			continue;
> > +		dev_err(hba->dev, "%s[%d] = 0x%x at %lld us", err_name, i,
> > +			err_hist->reg[p], ktime_to_us(err_hist->tstamp[p]));
>
> Please consistently use a terminating \n

Sure, will do that. Thanks.

> > +	}
> > +}
> > +
> >  static void ufshcd_print_host_regs(struct ufs_hba *hba)
> >  {
> >  	/*
> > @@ -362,6 +393,21 @@ static void ufshcd_print_host_regs(struct ufs_hba 
> > *hba)
> >  	dev_err(hba->dev,
> >  		"hba->outstanding_reqs = 0x%x, hba->outstanding_tasks = 0x%x",
> >  		(u32)hba->outstanding_reqs, (u32)hba->outstanding_tasks);
> > +	dev_err(hba->dev,
> > +		"last_hibern8_exit_tstamp at %lld us, hibern8_exit_cnt = %d",
>
> etc...
>
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