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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