This reverts commit ceb3f91fd53c9fbd7b292fc2754ba4efffeeeedb.
IMO the real bug is assigning status urbs to scsi requests. First there
is no such link in the non-stream case. Also there isn't nessesarely a
scsi request in the first place, for example when submitting task
management requests.
This patch just papers over the real bug and introduces different status
urb handling in the stream/non-stream case for no good reason.
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
drivers/usb/storage/uas.c | 70 ++++++--------------------------------------
1 files changed, 10 insertions(+), 60 deletions(-)
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index f98ba40..36279a4 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -46,7 +46,6 @@ struct uas_dev_info {
unsigned use_streams:1;
unsigned uas_sense_old:1;
struct scsi_cmnd *cmnd;
- struct urb *status_urb; /* used only if stream support is available */
};
enum {
@@ -65,7 +64,6 @@ struct uas_cmd_info {
unsigned int state;
unsigned int stream;
struct urb *cmd_urb;
- /* status_urb is used only if stream support isn't available */
struct urb *status_urb;
struct urb *data_in_urb;
struct urb *data_out_urb;
@@ -129,6 +127,7 @@ static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd)
cmnd->result = sense_iu->status;
cmnd->scsi_done(cmnd);
+ usb_free_urb(urb);
}
static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
@@ -153,6 +152,7 @@ static void uas_sense_old(struct urb *urb, struct scsi_cmnd *cmnd)
cmnd->result = sense_iu->status;
cmnd->scsi_done(cmnd);
+ usb_free_urb(urb);
}
static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
@@ -161,7 +161,7 @@ static void uas_xfer_data(struct urb *urb, struct scsi_cmnd *cmnd,
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
int err;
- cmdinfo->state = direction;
+ cmdinfo->state = direction | SUBMIT_STATUS_URB;
err = uas_submit_urbs(cmnd, cmnd->device->hostdata, GFP_ATOMIC);
if (err) {
spin_lock(&uas_work_lock);
@@ -178,12 +178,10 @@ static void uas_stat_cmplt(struct urb *urb)
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
struct scsi_cmnd *cmnd;
u16 tag;
- int ret;
if (urb->status) {
dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status);
- if (devinfo->use_streams)
- usb_free_urb(urb);
+ usb_free_urb(urb);
return;
}
@@ -193,13 +191,7 @@ static void uas_stat_cmplt(struct urb *urb)
else
cmnd = scsi_host_find_tag(shost, tag - 1);
if (!cmnd) {
- if (devinfo->use_streams) {
- usb_free_urb(urb);
- return;
- }
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret)
- dev_err(&urb->dev->dev, "failed submit status urb\n");
+ usb_free_urb(urb);
return;
}
@@ -225,15 +217,6 @@ static void uas_stat_cmplt(struct urb *urb)
scmd_printk(KERN_ERR, cmnd,
"Bogus IU (%d) received on status pipe\n", iu->iu_id);
}
-
- if (devinfo->use_streams) {
- usb_free_urb(urb);
- return;
- }
-
- ret = usb_submit_urb(urb, GFP_ATOMIC);
- if (ret)
- dev_err(&urb->dev->dev, "failed submit status urb\n");
}
static void uas_data_cmplt(struct urb *urb)
@@ -264,7 +247,7 @@ static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
}
static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp,
- struct Scsi_Host *shost, u16 stream_id)
+ struct scsi_cmnd *cmnd, u16 stream_id)
{
struct usb_device *udev = devinfo->udev;
struct urb *urb = usb_alloc_urb(0, gfp);
@@ -278,7 +261,7 @@ static struct urb *uas_alloc_sense_urb(struct uas_dev_info *devinfo, gfp_t gfp,
goto free;
usb_fill_bulk_urb(urb, udev, devinfo->status_pipe, iu, sizeof(*iu),
- uas_stat_cmplt, shost);
+ uas_stat_cmplt, cmnd->device->host);
urb->stream_id = stream_id;
urb->transfer_flags |= URB_FREE_BUFFER;
out:
@@ -340,8 +323,8 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
if (cmdinfo->state & ALLOC_STATUS_URB) {
- cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp,
- cmnd->device->host, cmdinfo->stream);
+ cmdinfo->status_urb = uas_alloc_sense_urb(devinfo, gfp, cmnd,
+ cmdinfo->stream);
if (!cmdinfo->status_urb)
return SCSI_MLQUEUE_DEVICE_BUSY;
cmdinfo->state &= ~ALLOC_STATUS_URB;
@@ -450,8 +433,7 @@ static int uas_queuecommand_lck(struct scsi_cmnd *cmnd,
}
if (!devinfo->use_streams) {
- cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB |
- ALLOC_STATUS_URB | SUBMIT_STATUS_URB);
+ cmdinfo->state &= ~(SUBMIT_DATA_IN_URB | SUBMIT_DATA_OUT_URB);
cmdinfo->stream = 0;
}
@@ -662,29 +644,6 @@ static void uas_configure_endpoints(struct uas_dev_info *devinfo)
}
}
-static int uas_alloc_status_urb(struct uas_dev_info *devinfo,
- struct Scsi_Host *shost)
-{
- if (devinfo->use_streams) {
- devinfo->status_urb = NULL;
- return 0;
- }
-
- devinfo->status_urb = uas_alloc_sense_urb(devinfo, GFP_KERNEL,
- shost, 0);
- if (!devinfo->status_urb)
- goto err_s_urb;
-
- if (usb_submit_urb(devinfo->status_urb, GFP_KERNEL))
- goto err_submit_urb;
-
- return 0;
-err_submit_urb:
- usb_free_urb(devinfo->status_urb);
-err_s_urb:
- return -ENOMEM;
-}
-
static void uas_free_streams(struct uas_dev_info *devinfo)
{
struct usb_device *udev = devinfo->udev;
@@ -739,17 +698,10 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id)
shost->hostdata[0] = (unsigned long)devinfo;
- result = uas_alloc_status_urb(devinfo, shost);
- if (result)
- goto err_alloc_status;
-
scsi_scan_host(shost);
usb_set_intfdata(intf, shost);
return result;
-err_alloc_status:
- scsi_remove_host(shost);
- shost = NULL;
deconfig_eps:
uas_free_streams(devinfo);
free:
@@ -777,8 +729,6 @@ static void uas_disconnect(struct usb_interface *intf)
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
scsi_remove_host(shost);
- usb_kill_urb(devinfo->status_urb);
- usb_free_urb(devinfo->status_urb);
uas_free_streams(devinfo);
kfree(devinfo);
}
--
1.7.1
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