Problem: This is a work around for a bug with LSI Fusion MPT SAS2 when pefroming secure erase. Due to the very long time the operation takes commands issued during the erase will time out and will trigger execution of abort hook. Even though the abort hook is called for the specifc command which timed out this leads to entire device halt (scsi_state terminated) and premature termination of the secured erase.
Fix: Set device state to busy while erase in progress to reject any incoming commands until the erase is done. The device is blocked any way during this time and cannot execute any other command. More data and logs can be found here - https://drive.google.com/file/d/0B9ocOHYHbbS1Q3VMdkkzeWFkTjg/view v2: Update according to example patch by Hannes Reinecke to apply the blocking logic to any ATA 12/16 command. v3: Use SCSI commands opcodes definitions instead of value and correct identation. Signed-off-by: Andrey Grodzovsky <andrey2...@gmail.com> Cc: <linux-scsi@vger.kernel.org> Cc: Sathya Prakash <sathya.prak...@broadcom.com> Cc: Chaitra P B <chaitra.basa...@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subram...@broadcom.com> Cc: Sreekanth Reddy <sreekanth.re...@broadcom.com> Cc: Hannes Reinecke <h...@suse.de> Cc: <sta...@vger.kernel.org> --- drivers/scsi/mpt3sas/mpt3sas_scsih.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 5a97e32..320f16c 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -3500,6 +3500,10 @@ _scsih_eedp_error_handling(struct scsi_cmnd *scmd, u16 ioc_status) SAM_STAT_CHECK_CONDITION; } +static inline bool ata_12_16_cmd(struct scsi_cmnd *scmd) +{ + return (scmd->cmnd[0] == ATA_12 || scmd->cmnd[0] == ATA_16); +} /** * _scsih_qcmd - main scsi request entry point @@ -3528,6 +3532,14 @@ _scsih_qcmd(struct Scsi_Host *shost, struct scsi_cmnd *scmd) scsi_print_command(scmd); #endif + /** + * Lock the device for any subsequent command until + * command is done. + */ + if (ata_12_16_cmd(scmd)) + scsi_internal_device_block(scmd->device); + + sas_device_priv_data = scmd->device->hostdata; if (!sas_device_priv_data || !sas_device_priv_data->sas_target) { scmd->result = DID_NO_CONNECT << 16; @@ -4062,6 +4074,10 @@ _scsih_io_done(struct MPT3SAS_ADAPTER *ioc, u16 smid, u8 msix_index, u32 reply) if (scmd == NULL) return 1; + if (ata_12_16_cmd(scmd)) + scsi_internal_device_unblock(scmd->device, SDEV_RUNNING); + + mpi_request = mpt3sas_base_get_msg_frame(ioc, smid); if (mpi_reply == NULL) { -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
