5.10-stable review patch. If anyone has any objections, please let me know.
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From: Greg Kroah-Hartman gregkh@linuxfoundation.org
This reverts commit f2d30198c0530b8da155697d8723e19ac72c15fe which is commit bf23e619039d360d503b7282d030daf2277a5d47 upstream.
As reported, a lot of scsi changes were made just to resolve a 2 line patch, so let's revert them all and then manually fix up the 2 line fixup so that things are simpler and potential abi changes are not an issue.
Link: https://lore.kernel.org/r/ZZ042FejzwMM5vDW@duo.ucw.cz Reported-by: Pavel Machek pavel@ucw.cz Cc: "Martin K. Petersen" martin.petersen@oracle.com Cc: Hannes Reinecke hare@suse.com Cc: Ming Lei ming.lei@redhat.com Cc: Christoph Hellwig hch@lst.de Cc: Benjamin Block bblock@linux.ibm.com Cc: Bean Huo beanhuo@micron.com Cc: Bart Van Assche bvanassche@acm.org Cc: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/scsi/scsi_error.c | 17 +++++++++++------ drivers/scsi/scsi_lib.c | 10 ---------- drivers/scsi/scsi_priv.h | 1 - include/scsi/scsi_cmnd.h | 7 ------- 4 files changed, 11 insertions(+), 24 deletions(-)
--- a/drivers/scsi/scsi_error.c +++ b/drivers/scsi/scsi_error.c @@ -50,6 +50,8 @@
#include <asm/unaligned.h>
+static void scsi_eh_done(struct scsi_cmnd *scmd); + /* * These should *probably* be handled by the host itself. * Since it is allowed to sleep, it probably should. @@ -498,8 +500,7 @@ int scsi_check_sense(struct scsi_cmnd *s /* handler does not care. Drop down to default handling */ }
- if (scmd->cmnd[0] == TEST_UNIT_READY && - scmd->submitter != SUBMITTED_BY_SCSI_ERROR_HANDLER) + if (scmd->cmnd[0] == TEST_UNIT_READY && scmd->scsi_done != scsi_eh_done) /* * nasty: for mid-layer issued TURs, we need to return the * actual sense data without any recovery attempt. For eh @@ -767,7 +768,7 @@ static int scsi_eh_completed_normally(st * scsi_eh_done - Completion function for error handling. * @scmd: Cmd that is done. */ -void scsi_eh_done(struct scsi_cmnd *scmd) +static void scsi_eh_done(struct scsi_cmnd *scmd) { struct completion *eh_action;
@@ -1067,7 +1068,7 @@ retry: shost->eh_action = &done;
scsi_log_send(scmd); - scmd->submitter = SUBMITTED_BY_SCSI_ERROR_HANDLER; + scmd->scsi_done = scsi_eh_done;
/* * Lock sdev->state_mutex to avoid that scsi_device_quiesce() can @@ -1094,7 +1095,6 @@ retry: if (rtn) { if (timeleft > stall_for) { scsi_eh_restore_cmnd(scmd, &ses); - timeleft -= stall_for; msleep(jiffies_to_msecs(stall_for)); goto retry; @@ -2322,6 +2322,11 @@ void scsi_report_device_reset(struct Scs } EXPORT_SYMBOL(scsi_report_device_reset);
+static void +scsi_reset_provider_done_command(struct scsi_cmnd *scmd) +{ +} + /** * scsi_ioctl_reset: explicitly reset a host/bus/target/device * @dev: scsi_device to operate on @@ -2358,7 +2363,7 @@ scsi_ioctl_reset(struct scsi_device *dev scmd->request = rq; scmd->cmnd = scsi_req(rq)->cmd;
- scmd->submitter = SUBMITTED_BY_SCSI_RESET_IOCTL; + scmd->scsi_done = scsi_reset_provider_done_command; memset(&scmd->sdb, 0, sizeof(scmd->sdb));
scmd->cmd_len = 0; --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1596,15 +1596,6 @@ static blk_status_t scsi_prepare_cmd(str
static void scsi_mq_done(struct scsi_cmnd *cmd) { - switch (cmd->submitter) { - case SUBMITTED_BY_BLOCK_LAYER: - break; - case SUBMITTED_BY_SCSI_ERROR_HANDLER: - return scsi_eh_done(cmd); - case SUBMITTED_BY_SCSI_RESET_IOCTL: - return; - } - if (unlikely(blk_should_fake_timeout(scsi_cmd_to_rq(cmd)->q))) return; if (unlikely(test_and_set_bit(SCMD_STATE_COMPLETE, &cmd->state))) @@ -1694,7 +1685,6 @@ static blk_status_t scsi_queue_rq(struct
scsi_set_resid(cmd, 0); memset(cmd->sense_buffer, 0, SCSI_SENSE_BUFFERSIZE); - cmd->submitter = SUBMITTED_BY_BLOCK_LAYER; cmd->scsi_done = scsi_mq_done;
blk_mq_start_request(req); --- a/drivers/scsi/scsi_priv.h +++ b/drivers/scsi/scsi_priv.h @@ -82,7 +82,6 @@ void scsi_eh_ready_devs(struct Scsi_Host int scsi_eh_get_sense(struct list_head *work_q, struct list_head *done_q); int scsi_noretry_cmd(struct scsi_cmnd *scmd); -void scsi_eh_done(struct scsi_cmnd *scmd);
/* scsi_lib.c */ extern int scsi_maybe_unblock_host(struct scsi_device *sdev); --- a/include/scsi/scsi_cmnd.h +++ b/include/scsi/scsi_cmnd.h @@ -65,12 +65,6 @@ struct scsi_pointer { #define SCMD_STATE_COMPLETE 0 #define SCMD_STATE_INFLIGHT 1
-enum scsi_cmnd_submitter { - SUBMITTED_BY_BLOCK_LAYER = 0, - SUBMITTED_BY_SCSI_ERROR_HANDLER = 1, - SUBMITTED_BY_SCSI_RESET_IOCTL = 2, -} __packed; - struct scsi_cmnd { struct scsi_request req; struct scsi_device *device; @@ -94,7 +88,6 @@ struct scsi_cmnd { unsigned char prot_op; unsigned char prot_type; unsigned char prot_flags; - enum scsi_cmnd_submitter submitter;
unsigned short cmd_len; enum dma_data_direction sc_data_direction;