From: Stanley Chu Date: Mon, 28 Jan 2019 14:04:26 +0000 (+0800) Subject: scsi: ufs: Print uic error history in time order X-Git-Tag: v5.1-rc1~85^2~118 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=27752647f88a1b03019e03f21f32b60452af7d4b;p=thirdparty%2Fkernel%2Flinux.git scsi: ufs: Print uic error history in time order uic errors are currently printed out of time order. Make things more readable by printing logs in time order, and printing "No record" if history is empty. Signed-off-by: Stanley Chu Reviewed-by: Avri Altman Reviewed-by: Bean Huo Tested-by: Bean Huo Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c index 9ba7671b84f87..f90badcb83184 100644 --- a/drivers/scsi/ufs/ufshcd.c +++ b/drivers/scsi/ufs/ufshcd.c @@ -393,15 +393,20 @@ static void ufshcd_print_uic_err_hist(struct ufs_hba *hba, struct ufs_uic_err_reg_hist *err_hist, char *err_name) { int i; + bool found = false; for (i = 0; i < UIC_ERR_REG_HIST_LENGTH; i++) { - int p = (i + err_hist->pos - 1) % UIC_ERR_REG_HIST_LENGTH; + int p = (i + err_hist->pos) % UIC_ERR_REG_HIST_LENGTH; if (err_hist->reg[p] == 0) continue; dev_err(hba->dev, "%s[%d] = 0x%x at %lld us\n", err_name, i, err_hist->reg[p], ktime_to_us(err_hist->tstamp[p])); + found = true; } + + if (!found) + dev_err(hba->dev, "No record of %s uic errors\n", err_name); } static void ufshcd_print_host_regs(struct ufs_hba *hba)