diff options
| -rw-r--r-- | drivers/ata/libata-eh.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index d1fbd59ead1..6d53cf9b3b6 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2047,6 +2047,26 @@ static unsigned int ata_eh_speed_down(struct ata_device *dev, } /** + * ata_eh_worth_retry - analyze error and decide whether to retry + * @qc: qc to possibly retry + * + * Look at the cause of the error and decide if a retry + * might be useful or not. We don't want to retry media errors + * because the drive itself has probably already taken 10-30 seconds + * doing its own internal retries before reporting the failure. + */ +static inline int ata_eh_worth_retry(struct ata_queued_cmd *qc) +{ + if (qc->flags & AC_ERR_MEDIA) + return 0; /* don't retry media errors */ + if (qc->flags & ATA_QCFLAG_IO) + return 1; /* otherwise retry anything from fs stack */ + if (qc->err_mask & AC_ERR_INVALID) + return 0; /* don't retry these */ + return qc->err_mask != AC_ERR_DEV; /* retry if not dev error */ +} + +/** * ata_eh_link_autopsy - analyze error and determine recovery action * @link: host link to perform autopsy on * @@ -2120,9 +2140,7 @@ static void ata_eh_link_autopsy(struct ata_link *link) qc->err_mask &= ~(AC_ERR_DEV | AC_ERR_OTHER); /* determine whether the command is worth retrying */ - if (qc->flags & ATA_QCFLAG_IO || - (!(qc->err_mask & AC_ERR_INVALID) && - qc->err_mask != AC_ERR_DEV)) + if (ata_eh_worth_retry(qc)) qc->flags |= ATA_QCFLAG_RETRY; /* accumulate error info */ |