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USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance, clear-feature ignore

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Gadget tells controller driver to ignore Clear-Feature(HALT_ENDPOINT)

Signed-off-by: David Lopo <lopo.david@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
This commit is contained in:
David Lopo 2008-04-29 10:14:38 +01:00 committed by Greg Kroah-Hartman
parent a5e54b0dbb
commit 62fd2cac5b
1 changed files with 24 additions and 1 deletions
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25
drivers/usb/gadget/file_storage.c
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@ -2307,6 +2307,29 @@ static int halt_bulk_in_endpoint(struct fsg_dev *fsg)
return rc;
}
static int wedge_bulk_in_endpoint(struct fsg_dev *fsg)
{
int rc;
DBG(fsg, "bulk-in set wedge\n");
rc = usb_ep_set_wedge(fsg->bulk_in);
if (rc == -EAGAIN)
VDBG(fsg, "delayed bulk-in endpoint wedge\n");
while (rc != 0) {
if (rc != -EAGAIN) {
WARN(fsg, "usb_ep_set_wedge -> %d\n", rc);
rc = 0;
break;
}
/* Wait for a short time and then try again */
if (msleep_interruptible(100) != 0)
return -EINTR;
rc = usb_ep_set_wedge(fsg->bulk_in);
}
return rc;
}
static int pad_with_zeros(struct fsg_dev *fsg)
{
struct fsg_buffhd *bh = fsg->next_buffhd_to_fill;
@ -2957,7 +2980,7 @@ static int received_cbw(struct fsg_dev *fsg, struct fsg_buffhd *bh)
* We aren't required to halt the OUT endpoint; instead
* we can simply accept and discard any data received
* until the next reset. */
halt_bulk_in_endpoint(fsg);
wedge_bulk_in_endpoint(fsg);
set_bit(IGNORE_BULK_OUT, &fsg->atomic_bitflags);
return -EINVAL;
}