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uas: Not being able to alloc streams when connected through usb-3 is an error

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Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Hans de Goede 2013-10-29 10:23:26 +01:00 committed by Sarah Sharp
parent 6134041bef
commit 58d51444cd
1 changed files with 17 additions and 7 deletions
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24
drivers/usb/storage/uas.c
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@ -93,7 +93,6 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_dev_info *devinfo, gfp_t gfp);
static void uas_do_work(struct work_struct *work);
static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller);
static void uas_configure_endpoints(struct uas_dev_info *devinfo);
static void uas_free_streams(struct uas_dev_info *devinfo);
static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller);
@ -898,7 +897,7 @@ static int uas_switch_interface(struct usb_device *udev,
intf->altsetting[0].desc.bInterfaceNumber, alt);
}
static void uas_configure_endpoints(struct uas_dev_info *devinfo)
static int uas_configure_endpoints(struct uas_dev_info *devinfo)
{
struct usb_host_endpoint *eps[4] = { };
struct usb_device *udev = devinfo->udev;
@ -920,14 +919,18 @@ static void uas_configure_endpoints(struct uas_dev_info *devinfo)
devinfo->data_out_pipe = usb_sndbulkpipe(udev,
usb_endpoint_num(&eps[3]->desc));
devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1, 3, 256,
GFP_KERNEL);
if (devinfo->qdepth < 0) {
if (udev->speed != USB_SPEED_SUPER) {
devinfo->qdepth = 256;
devinfo->use_streams = 0;
} else {
devinfo->qdepth = usb_alloc_streams(devinfo->intf, eps + 1,
3, 256, GFP_KERNEL);
if (devinfo->qdepth < 0)
return devinfo->qdepth;
devinfo->use_streams = 1;
}
return 0;
}
static void uas_free_streams(struct uas_dev_info *devinfo)
@ -984,7 +987,10 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id)
INIT_WORK(&devinfo->work, uas_do_work);
INIT_LIST_HEAD(&devinfo->work_list);
INIT_LIST_HEAD(&devinfo->dead_list);
uas_configure_endpoints(devinfo);
result = uas_configure_endpoints(devinfo);
if (result)
goto set_alt0;
result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 2);
if (result)
@ -1039,7 +1045,11 @@ static int uas_post_reset(struct usb_interface *intf)
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
unsigned long flags;
uas_configure_endpoints(devinfo);
if (uas_configure_endpoints(devinfo) != 0) {
shost_printk(KERN_ERR, shost,
"%s: alloc streams error after reset", __func__);
return 1;
}
spin_lock_irqsave(shost->host_lock, flags);
scsi_report_bus_reset(shost, 0);