#define MAX_CMNDS 256
-/*
- * The r00-r01c specs define this version of the SENSE IU data structure.
- * It's still in use by several different firmware releases.
- */
-struct sense_iu_old {
- __u8 iu_id;
- __u8 rsvd1;
- __be16 tag;
- __be16 len;
- __u8 status;
- __u8 service_response;
- __u8 sense[SCSI_SENSE_BUFFERSIZE];
-};
-
struct uas_dev_info {
struct usb_interface *intf;
struct usb_device *udev;
int qdepth, resetting;
unsigned cmd_pipe, status_pipe, data_in_pipe, data_out_pipe;
unsigned use_streams:1;
- unsigned uas_sense_old:1;
unsigned shutdown:1;
struct scsi_cmnd *cmnd[MAX_CMNDS];
spinlock_t lock;
struct work_struct work;
- struct list_head inflight_list;
- struct list_head dead_list;
};
enum {
COMMAND_INFLIGHT = (1 << 8),
DATA_IN_URB_INFLIGHT = (1 << 9),
DATA_OUT_URB_INFLIGHT = (1 << 10),
- COMMAND_COMPLETED = (1 << 11),
- COMMAND_ABORTED = (1 << 12),
- UNLINK_DATA_URBS = (1 << 13),
- IS_IN_WORK_LIST = (1 << 14),
+ COMMAND_ABORTED = (1 << 11),
+ IS_IN_WORK_LIST = (1 << 12),
};
/* Overrides scsi_pointer */
struct urb *cmd_urb;
struct urb *data_in_urb;
struct urb *data_out_urb;
- struct list_head list;
};
/* I hate forward declarations, but I actually have a loop */
static void uas_do_work(struct work_struct *work);
static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller);
static void uas_free_streams(struct uas_dev_info *devinfo);
-static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller);
-
-/* Must be called with devinfo->lock held, will temporary unlock the lock */
-static void uas_unlink_data_urbs(struct uas_dev_info *devinfo,
- struct uas_cmd_info *cmdinfo,
- unsigned long *lock_flags)
-{
- /*
- * The UNLINK_DATA_URBS flag makes sure uas_try_complete
- * (called by urb completion) doesn't release cmdinfo
- * underneath us.
- */
- cmdinfo->state |= UNLINK_DATA_URBS;
- spin_unlock_irqrestore(&devinfo->lock, *lock_flags);
-
- if (cmdinfo->data_in_urb)
- usb_unlink_urb(cmdinfo->data_in_urb);
- if (cmdinfo->data_out_urb)
- usb_unlink_urb(cmdinfo->data_out_urb);
-
- spin_lock_irqsave(&devinfo->lock, *lock_flags);
- cmdinfo->state &= ~UNLINK_DATA_URBS;
-}
+static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *prefix,
+ int status);
static void uas_do_work(struct work_struct *work)
{
struct uas_dev_info *devinfo =
container_of(work, struct uas_dev_info, work);
struct uas_cmd_info *cmdinfo;
+ struct scsi_cmnd *cmnd;
unsigned long flags;
- int err;
+ int i, err;
spin_lock_irqsave(&devinfo->lock, flags);
if (devinfo->resetting)
goto out;
- list_for_each_entry(cmdinfo, &devinfo->inflight_list, list) {
- struct scsi_pointer *scp = (void *)cmdinfo;
- struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd,
- SCp);
+ for (i = 0; i < devinfo->qdepth; i++) {
+ if (!devinfo->cmnd[i])
+ continue;
+
+ cmnd = devinfo->cmnd[i];
+ cmdinfo = (void *)&cmnd->SCp;
if (!(cmdinfo->state & IS_IN_WORK_LIST))
continue;
spin_unlock_irqrestore(&devinfo->lock, flags);
}
-static void uas_mark_cmd_dead(struct uas_dev_info *devinfo,
- struct uas_cmd_info *cmdinfo,
- int result, const char *caller)
-{
- struct scsi_pointer *scp = (void *)cmdinfo;
- struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp);
-
- uas_log_cmd_state(cmnd, caller);
- lockdep_assert_held(&devinfo->lock);
- WARN_ON_ONCE(cmdinfo->state & COMMAND_ABORTED);
- cmdinfo->state |= COMMAND_ABORTED;
- cmdinfo->state &= ~IS_IN_WORK_LIST;
- cmnd->result = result << 16;
- list_move_tail(&cmdinfo->list, &devinfo->dead_list);
-}
-
-static void uas_abort_inflight(struct uas_dev_info *devinfo, int result,
- const char *caller)
-{
- struct uas_cmd_info *cmdinfo;
- struct uas_cmd_info *temp;
- unsigned long flags;
-
- spin_lock_irqsave(&devinfo->lock, flags);
- list_for_each_entry_safe(cmdinfo, temp, &devinfo->inflight_list, list)
- uas_mark_cmd_dead(devinfo, cmdinfo, result, caller);
- spin_unlock_irqrestore(&devinfo->lock, flags);
-}
-
static void uas_add_work(struct uas_cmd_info *cmdinfo)
{
struct scsi_pointer *scp = (void *)cmdinfo;
schedule_work(&devinfo->work);
}
-static void uas_zap_dead(struct uas_dev_info *devinfo)
+static void uas_zap_pending(struct uas_dev_info *devinfo, int result)
{
struct uas_cmd_info *cmdinfo;
- struct uas_cmd_info *temp;
+ struct scsi_cmnd *cmnd;
unsigned long flags;
+ int i, err;
spin_lock_irqsave(&devinfo->lock, flags);
- list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, list) {
- struct scsi_pointer *scp = (void *)cmdinfo;
- struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd,
- SCp);
- uas_log_cmd_state(cmnd, __func__);
- WARN_ON_ONCE(!(cmdinfo->state & COMMAND_ABORTED));
- /* all urbs are killed, clear inflight bits */
- cmdinfo->state &= ~(COMMAND_INFLIGHT |
- DATA_IN_URB_INFLIGHT |
- DATA_OUT_URB_INFLIGHT);
- uas_try_complete(cmnd, __func__);
+ for (i = 0; i < devinfo->qdepth; i++) {
+ if (!devinfo->cmnd[i])
+ continue;
+
+ cmnd = devinfo->cmnd[i];
+ cmdinfo = (void *)&cmnd->SCp;
+ uas_log_cmd_state(cmnd, __func__, 0);
+ /* Sense urbs were killed, clear COMMAND_INFLIGHT manually */
+ cmdinfo->state &= ~COMMAND_INFLIGHT;
+ cmnd->result = result << 16;
+ err = uas_try_complete(cmnd, __func__);
+ WARN_ON(err != 0);
}
spin_unlock_irqrestore(&devinfo->lock, flags);
}
cmnd->result = sense_iu->status;
}
-static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
-{
- struct sense_iu_old *sense_iu = urb->transfer_buffer;
- struct scsi_device *sdev = cmnd->device;
-
- if (urb->actual_length > 8) {
- unsigned len = be16_to_cpup(&sense_iu->len) - 2;
- if (len + 8 != urb->actual_length) {
- int newlen = min(len + 8, urb->actual_length) - 8;
- if (newlen < 0)
- newlen = 0;
- sdev_printk(KERN_INFO, sdev, "%s: urb length %d "
- "disagrees with IU sense data length %d, "
- "using %d bytes of sense data\n", __func__,
- urb->actual_length, len, newlen);
- len = newlen;
- }
- memcpy(cmnd->sense_buffer, sense_iu->sense, len);
- }
-
- cmnd->result = sense_iu->status;
-}
-
/*
* scsi-tags go from 0 - (nr_tags - 1), uas tags need to match stream-ids,
* which go from 1 - nr_streams. And we use 1 for untagged commands.
return tag;
}
-static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller)
+static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *prefix,
+ int status)
{
struct uas_cmd_info *ci = (void *)&cmnd->SCp;
- scmd_printk(KERN_INFO, cmnd, "%s %p tag %d, inflight:"
- "%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
- caller, cmnd, uas_get_tag(cmnd),
+ scmd_printk(KERN_INFO, cmnd,
+ "%s %d tag %d inflight:%s%s%s%s%s%s%s%s%s%s%s%s ",
+ prefix, status, uas_get_tag(cmnd),
(ci->state & SUBMIT_STATUS_URB) ? " s-st" : "",
(ci->state & ALLOC_DATA_IN_URB) ? " a-in" : "",
(ci->state & SUBMIT_DATA_IN_URB) ? " s-in" : "",
(ci->state & COMMAND_INFLIGHT) ? " CMD" : "",
(ci->state & DATA_IN_URB_INFLIGHT) ? " IN" : "",
(ci->state & DATA_OUT_URB_INFLIGHT) ? " OUT" : "",
- (ci->state & COMMAND_COMPLETED) ? " done" : "",
(ci->state & COMMAND_ABORTED) ? " abort" : "",
- (ci->state & UNLINK_DATA_URBS) ? " unlink": "",
(ci->state & IS_IN_WORK_LIST) ? " work" : "");
+ scsi_print_command(cmnd);
+}
+
+static void uas_free_unsubmitted_urbs(struct scsi_cmnd *cmnd)
+{
+ struct uas_cmd_info *cmdinfo;
+
+ if (!cmnd)
+ return;
+
+ cmdinfo = (void *)&cmnd->SCp;
+
+ if (cmdinfo->state & SUBMIT_CMD_URB)
+ usb_free_urb(cmdinfo->cmd_urb);
+
+ /* data urbs may have never gotten their submit flag set */
+ if (!(cmdinfo->state & DATA_IN_URB_INFLIGHT))
+ usb_free_urb(cmdinfo->data_in_urb);
+ if (!(cmdinfo->state & DATA_OUT_URB_INFLIGHT))
+ usb_free_urb(cmdinfo->data_out_urb);
}
static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller)
if (cmdinfo->state & (COMMAND_INFLIGHT |
DATA_IN_URB_INFLIGHT |
DATA_OUT_URB_INFLIGHT |
- UNLINK_DATA_URBS))
+ COMMAND_ABORTED))
return -EBUSY;
- WARN_ON_ONCE(cmdinfo->state & COMMAND_COMPLETED);
- cmdinfo->state |= COMMAND_COMPLETED;
- usb_free_urb(cmdinfo->data_in_urb);
- usb_free_urb(cmdinfo->data_out_urb);
- if (cmdinfo->state & COMMAND_ABORTED)
- scmd_printk(KERN_INFO, cmnd, "abort completed\n");
- list_del(&cmdinfo->list);
devinfo->cmnd[uas_get_tag(cmnd) - 1] = NULL;
+ uas_free_unsubmitted_urbs(cmnd);
cmnd->scsi_done(cmnd);
return 0;
}
struct iu *iu = urb->transfer_buffer;
struct Scsi_Host *shost = urb->context;
struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
+ struct urb *data_in_urb = NULL;
+ struct urb *data_out_urb = NULL;
struct scsi_cmnd *cmnd;
struct uas_cmd_info *cmdinfo;
unsigned long flags;
goto out;
if (urb->status) {
- if (urb->status == -ENOENT) {
- dev_err(&urb->dev->dev, "stat urb: killed, stream %d\n",
- urb->stream_id);
- } else {
+ if (urb->status != -ENOENT && urb->status != -ECONNRESET) {
dev_err(&urb->dev->dev, "stat urb: status %d\n",
urb->status);
}
cmnd = devinfo->cmnd[idx];
cmdinfo = (void *)&cmnd->SCp;
+
+ if (!(cmdinfo->state & COMMAND_INFLIGHT)) {
+ uas_log_cmd_state(cmnd, "unexpected status cmplt", 0);
+ goto out;
+ }
+
switch (iu->iu_id) {
case IU_ID_STATUS:
- if (urb->actual_length < 16)
- devinfo->uas_sense_old = 1;
- if (devinfo->uas_sense_old)
- uas_sense_old(urb, cmnd);
- else
- uas_sense(urb, cmnd);
+ uas_sense(urb, cmnd);
if (cmnd->result != 0) {
/* cancel data transfers on error */
- uas_unlink_data_urbs(devinfo, cmdinfo, &flags);
+ data_in_urb = usb_get_urb(cmdinfo->data_in_urb);
+ data_out_urb = usb_get_urb(cmdinfo->data_out_urb);
}
cmdinfo->state &= ~COMMAND_INFLIGHT;
uas_try_complete(cmnd, __func__);
case IU_ID_READ_READY:
if (!cmdinfo->data_in_urb ||
(cmdinfo->state & DATA_IN_URB_INFLIGHT)) {
- scmd_printk(KERN_ERR, cmnd, "unexpected read rdy\n");
+ uas_log_cmd_state(cmnd, "unexpected read rdy", 0);
break;
}
uas_xfer_data(urb, cmnd, SUBMIT_DATA_IN_URB);
case IU_ID_WRITE_READY:
if (!cmdinfo->data_out_urb ||
(cmdinfo->state & DATA_OUT_URB_INFLIGHT)) {
- scmd_printk(KERN_ERR, cmnd, "unexpected write rdy\n");
+ uas_log_cmd_state(cmnd, "unexpected write rdy", 0);
break;
}
uas_xfer_data(urb, cmnd, SUBMIT_DATA_OUT_URB);
break;
default:
- scmd_printk(KERN_ERR, cmnd,
- "Bogus IU (%d) received on status pipe\n", iu->iu_id);
+ uas_log_cmd_state(cmnd, "bogus IU", iu->iu_id);
}
out:
usb_free_urb(urb);
spin_unlock_irqrestore(&devinfo->lock, flags);
+
+ /* Unlinking of data urbs must be done without holding the lock */
+ if (data_in_urb) {
+ usb_unlink_urb(data_in_urb);
+ usb_put_urb(data_in_urb);
+ }
+ if (data_out_urb) {
+ usb_unlink_urb(data_out_urb);
+ usb_put_urb(data_out_urb);
+ }
}
static void uas_data_cmplt(struct urb *urb)
if (cmdinfo->data_in_urb == urb) {
sdb = scsi_in(cmnd);
cmdinfo->state &= ~DATA_IN_URB_INFLIGHT;
+ cmdinfo->data_in_urb = NULL;
} else if (cmdinfo->data_out_urb == urb) {
sdb = scsi_out(cmnd);
cmdinfo->state &= ~DATA_OUT_URB_INFLIGHT;
+ cmdinfo->data_out_urb = NULL;
}
if (sdb == NULL) {
WARN_ON_ONCE(1);
if (devinfo->resetting)
goto out;
+ /* Data urbs should not complete before the cmd urb is submitted */
+ if (cmdinfo->state & SUBMIT_CMD_URB) {
+ uas_log_cmd_state(cmnd, "unexpected data cmplt", 0);
+ goto out;
+ }
+
if (urb->status) {
- if (urb->status != -ECONNRESET) {
- uas_log_cmd_state(cmnd, __func__);
- scmd_printk(KERN_ERR, cmnd,
- "data cmplt err %d stream %d\n",
- urb->status, urb->stream_id);
- }
+ if (urb->status != -ENOENT && urb->status != -ECONNRESET)
+ uas_log_cmd_state(cmnd, "data cmplt err", urb->status);
/* error: no data transfered */
sdb->resid = sdb->length;
} else {
}
uas_try_complete(cmnd, __func__);
out:
+ usb_free_urb(urb);
spin_unlock_irqrestore(&devinfo->lock, flags);
}
static void uas_cmd_cmplt(struct urb *urb)
{
- struct scsi_cmnd *cmnd = urb->context;
+ if (urb->status)
+ dev_err(&urb->dev->dev, "cmd cmplt err %d\n", urb->status);
- if (urb->status) {
- uas_log_cmd_state(cmnd, __func__);
- scmd_printk(KERN_ERR, cmnd, "cmd cmplt err %d\n", urb->status);
- }
usb_free_urb(urb);
}
memcpy(iu->cdb, cmnd->cmnd, cmnd->cmd_len);
usb_fill_bulk_urb(urb, udev, devinfo->cmd_pipe, iu, sizeof(*iu) + len,
- uas_cmd_cmplt, cmnd);
+ uas_cmd_cmplt, NULL);
urb->transfer_flags |= URB_FREE_BUFFER;
out:
return urb;
err = usb_submit_urb(urb, gfp);
if (err) {
usb_unanchor_urb(urb);
- uas_log_cmd_state(cmnd, __func__);
- shost_printk(KERN_INFO, shost,
- "sense urb submission error %d stream %d\n",
- err, stream);
+ uas_log_cmd_state(cmnd, "sense submit err", err);
usb_free_urb(urb);
return NULL;
}
err = usb_submit_urb(cmdinfo->data_in_urb, gfp);
if (err) {
usb_unanchor_urb(cmdinfo->data_in_urb);
- uas_log_cmd_state(cmnd, __func__);
- scmd_printk(KERN_INFO, cmnd,
- "data in urb submission error %d stream %d\n",
- err, cmdinfo->data_in_urb->stream_id);
+ uas_log_cmd_state(cmnd, "data in submit err", err);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_IN_URB;
err = usb_submit_urb(cmdinfo->data_out_urb, gfp);
if (err) {
usb_unanchor_urb(cmdinfo->data_out_urb);
- uas_log_cmd_state(cmnd, __func__);
- scmd_printk(KERN_INFO, cmnd,
- "data out urb submission error %d stream %d\n",
- err, cmdinfo->data_out_urb->stream_id);
+ uas_log_cmd_state(cmnd, "data out submit err", err);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->state &= ~SUBMIT_DATA_OUT_URB;
err = usb_submit_urb(cmdinfo->cmd_urb, gfp);
if (err) {
usb_unanchor_urb(cmdinfo->cmd_urb);
- uas_log_cmd_state(cmnd, __func__);
- scmd_printk(KERN_INFO, cmnd,
- "cmd urb submission error %d\n", err);
+ uas_log_cmd_state(cmnd, "cmd submit err", err);
return SCSI_MLQUEUE_DEVICE_BUSY;
}
cmdinfo->cmd_urb = NULL;
BUILD_BUG_ON(sizeof(struct uas_cmd_info) > sizeof(struct scsi_pointer));
+ /* Re-check scsi_block_requests now that we've the host-lock */
+ if (cmnd->device->host->host_self_blocked)
+ return SCSI_MLQUEUE_DEVICE_BUSY;
+
if ((devinfo->flags & US_FL_NO_ATA_1X) &&
(cmnd->cmnd[0] == ATA_12 || cmnd->cmnd[0] == ATA_16)) {
memcpy(cmnd->sense_buffer, usb_stor_sense_invalidCDB,
}
devinfo->cmnd[stream - 1] = cmnd;
- list_add_tail(&cmdinfo->list, &devinfo->inflight_list);
spin_unlock_irqrestore(&devinfo->lock, flags);
return 0;
}
static DEF_SCSI_QCMD(uas_queuecommand)
+/*
+ * For now we do not support actually sending an abort to the device, so
+ * this eh always fails. Still we must define it to make sure that we've
+ * dropped all references to the cmnd in question once this function exits.
+ */
+static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
+{
+ struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
+ struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
+ struct urb *data_in_urb = NULL;
+ struct urb *data_out_urb = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+
+ uas_log_cmd_state(cmnd, __func__, 0);
+
+ /* Ensure that try_complete does not call scsi_done */
+ cmdinfo->state |= COMMAND_ABORTED;
+
+ /* Drop all refs to this cmnd, kill data urbs to break their ref */
+ devinfo->cmnd[uas_get_tag(cmnd) - 1] = NULL;
+ if (cmdinfo->state & DATA_IN_URB_INFLIGHT)
+ data_in_urb = usb_get_urb(cmdinfo->data_in_urb);
+ if (cmdinfo->state & DATA_OUT_URB_INFLIGHT)
+ data_out_urb = usb_get_urb(cmdinfo->data_out_urb);
+
+ uas_free_unsubmitted_urbs(cmnd);
+
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+
+ if (data_in_urb) {
+ usb_kill_urb(data_in_urb);
+ usb_put_urb(data_in_urb);
+ }
+ if (data_out_urb) {
+ usb_kill_urb(data_out_urb);
+ usb_put_urb(data_out_urb);
+ }
+
+ return FAILED;
+}
+
static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd)
{
struct scsi_device *sdev = cmnd->device;
devinfo->resetting = 1;
spin_unlock_irqrestore(&devinfo->lock, flags);
- uas_abort_inflight(devinfo, DID_RESET, __func__);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
- uas_zap_dead(devinfo);
+ uas_zap_pending(devinfo, DID_RESET);
+
err = usb_reset_device(udev);
spin_lock_irqsave(&devinfo->lock, flags);
usb_unlock_device(udev);
if (err) {
- shost_printk(KERN_INFO, sdev->host, "%s FAILED\n", __func__);
+ shost_printk(KERN_INFO, sdev->host, "%s FAILED err %d\n",
+ __func__, err);
return FAILED;
}
.queuecommand = uas_queuecommand,
.slave_alloc = uas_slave_alloc,
.slave_configure = uas_slave_configure,
+ .eh_abort_handler = uas_eh_abort_handler,
.eh_bus_reset_handler = uas_eh_bus_reset_handler,
.can_queue = 65536, /* Is there a limit on the _host_ ? */
.this_id = -1,
# include "unusual_uas.h"
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_BULK) },
{ USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, USB_PR_UAS) },
- /* 0xaa is a prototype device I happen to have access to */
- { USB_INTERFACE_INFO(USB_CLASS_MASS_STORAGE, USB_SC_SCSI, 0xaa) },
{ }
};
MODULE_DEVICE_TABLE(usb, uas_usb_ids);
struct usb_device *udev = devinfo->udev;
int r;
- devinfo->uas_sense_old = 0;
-
r = uas_find_endpoints(devinfo->intf->cur_altsetting, eps);
if (r)
return r;
devinfo->data_out_pipe = usb_sndbulkpipe(udev,
usb_endpoint_num(&eps[3]->desc));
- if (udev->speed != USB_SPEED_SUPER) {
+ if (udev->speed < USB_SPEED_SUPER) {
devinfo->qdepth = 32;
devinfo->use_streams = 0;
} else {
init_usb_anchor(&devinfo->data_urbs);
spin_lock_init(&devinfo->lock);
INIT_WORK(&devinfo->work, uas_do_work);
- INIT_LIST_HEAD(&devinfo->inflight_list);
- INIT_LIST_HEAD(&devinfo->dead_list);
result = uas_configure_endpoints(devinfo);
if (result)
return result;
}
+static int uas_cmnd_list_empty(struct uas_dev_info *devinfo)
+{
+ unsigned long flags;
+ int i, r = 1;
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+
+ for (i = 0; i < devinfo->qdepth; i++) {
+ if (devinfo->cmnd[i]) {
+ r = 0; /* Not empty */
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+
+ return r;
+}
+
+/*
+ * Wait for any pending cmnds to complete, on usb-2 sense_urbs may temporarily
+ * get empty while there still is more work to do due to sense-urbs completing
+ * with a READ/WRITE_READY iu code, so keep waiting until the list gets empty.
+ */
+static int uas_wait_for_pending_cmnds(struct uas_dev_info *devinfo)
+{
+ unsigned long start_time;
+ int r;
+
+ start_time = jiffies;
+ do {
+ flush_work(&devinfo->work);
+
+ r = usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000);
+ if (r == 0)
+ return -ETIME;
+
+ r = usb_wait_anchor_empty_timeout(&devinfo->data_urbs, 500);
+ if (r == 0)
+ return -ETIME;
+
+ if (time_after(jiffies, start_time + 5 * HZ))
+ return -ETIME;
+ } while (!uas_cmnd_list_empty(devinfo));
+
+ return 0;
+}
+
static int uas_pre_reset(struct usb_interface *intf)
{
struct Scsi_Host *shost = usb_get_intfdata(intf);
scsi_block_requests(shost);
spin_unlock_irqrestore(shost->host_lock, flags);
- /* Wait for any pending requests to complete */
- flush_work(&devinfo->work);
- if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) {
+ if (uas_wait_for_pending_cmnds(devinfo) != 0) {
shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__);
+ scsi_unblock_requests(shost);
return 1;
}
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
unsigned long flags;
+ int err;
if (devinfo->shutdown)
return 0;
- if (uas_configure_endpoints(devinfo) != 0) {
+ err = uas_configure_endpoints(devinfo);
+ if (err) {
shost_printk(KERN_ERR, shost,
- "%s: alloc streams error after reset", __func__);
+ "%s: alloc streams error %d after reset",
+ __func__, err);
return 1;
}
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
- /* Wait for any pending requests to complete */
- flush_work(&devinfo->work);
- if (usb_wait_anchor_empty_timeout(&devinfo->sense_urbs, 5000) == 0) {
+ if (uas_wait_for_pending_cmnds(devinfo) != 0) {
shost_printk(KERN_ERR, shost, "%s: timed out\n", __func__);
return -ETIME;
}
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (struct uas_dev_info *)shost->hostdata;
unsigned long flags;
+ int err;
- if (uas_configure_endpoints(devinfo) != 0) {
+ err = uas_configure_endpoints(devinfo);
+ if (err) {
shost_printk(KERN_ERR, shost,
- "%s: alloc streams error after reset", __func__);
+ "%s: alloc streams error %d after reset",
+ __func__, err);
return -EIO;
}
spin_unlock_irqrestore(&devinfo->lock, flags);
cancel_work_sync(&devinfo->work);
- uas_abort_inflight(devinfo, DID_NO_CONNECT, __func__);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
- uas_zap_dead(devinfo);
+ uas_zap_pending(devinfo, DID_NO_CONNECT);
+
scsi_remove_host(shost);
uas_free_streams(devinfo);
scsi_host_put(shost);