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authorDavid Lopo <lopo.david@gmail.com>2008-04-29 10:14:38 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2008-05-02 10:25:58 -0700
commit62fd2cac5bf5cf9e6fcb2fc40b32e7271e605c53 (patch)
tree8e46c093b1c3191a57a14acb78f58a18773483ab /drivers
parenta5e54b0dbb6a099793caf508b1d6c7d82f965ec3 (diff)
downloadblackbird-op-linux-62fd2cac5bf5cf9e6fcb2fc40b32e7271e605c53.tar.gz
blackbird-op-linux-62fd2cac5bf5cf9e6fcb2fc40b32e7271e605c53.zip
USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance, clear-feature ignore
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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/usb/gadget/file_storage.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c
index bf3f946fd455..47bb9f09a1aa 100644
--- a/drivers/usb/gadget/file_storage.c
+++ b/drivers/usb/gadget/file_storage.c
@@ -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;
}
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