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DM USB: process LIBUSB_TRANSFER_STALL error 

Handle the LIBUSB_TRANSFER_STALL error comes from libusb.

Change-Id: Id6911e9aaffafb256def5265a0ed9778b147d99a
Tracked-On:
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Reviewed-by: Liang Yang <liang3.yang@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu 2018-07-17 21:27:17 +08:00 committed by lijinxia
parent 640d896508
commit a49d483cd0
1 changed files with 13 additions and 2 deletions
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15
devicemodel/hw/platform/usb_pmapper.c
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@ -55,6 +55,7 @@ usb_dev_comp_req(struct libusb_transfer *libusb_xfer)
int len, do_intr = 0, short_data = 0;
int i, idx, buf_idx, done;
int bstart, bcount;
int is_stalled = 0;
assert(libusb_xfer);
@ -85,14 +86,16 @@ usb_dev_comp_req(struct libusb_transfer *libusb_xfer)
switch (libusb_xfer->status) {
case LIBUSB_TRANSFER_STALL:
xfer->status = USB_ERR_STALLED;
goto out;
is_stalled = 1;
goto stall_out;
case LIBUSB_TRANSFER_NO_DEVICE:
/* avoid short packet warnings when devices are plugged out. */
xfer->status = USB_ERR_SHORT_XFER;
goto out;
case LIBUSB_TRANSFER_ERROR:
is_stalled = 1;
xfer->status = USB_ERR_STALLED;
goto out;
goto stall_out;
case LIBUSB_TRANSFER_CANCELLED:
xfer->status = USB_ERR_IOERROR;
goto out;
@ -156,6 +159,14 @@ usb_dev_comp_req(struct libusb_transfer *libusb_xfer)
idx = (idx + 1) % USB_MAX_XFER_BLOCKS;
}
stall_out:
if (is_stalled) {
for (i = 0, idx = req->blk_start; i < req->blk_count; ++i) {
block = &xfer->data[idx % USB_MAX_XFER_BLOCKS];
block->processed = USB_XFER_BLK_HANDLED;
}
}
if (short_data)
xfer->status = USB_ERR_SHORT_XFER;