diff options
| author | Peter Chen <peter.chen@freescale.com> | 2014-02-19 09:41:41 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-25 05:07:52 +0400 |
| commit | 64fc06c40e01aa8129f5bc4c51567b5e205126b0 (patch) | |
| tree | 063b28ae9f0b3baa4103fff11e8eee72d8843023 /drivers/usb/chipidea | |
| parent | c859aa65a7ec40c02f435f14fa71de2a87c64513 (diff) | |
| download | linux-64fc06c40e01aa8129f5bc4c51567b5e205126b0.tar.xz | |
usb: chipidea: udc: refine ep operation at isr_tr_complete_handler
- delete the warning message at interrupt handler, and adds judgement at
ep_enable, if non-ep0 requests ctrl transfer, it will indicate an error.
- delete hw_test_and_clear_setup_status which is a broken code
- Tested with g_mass_storage, g_ncm, g_ether
Cc: matthieu.castet@parrot.com
Reported-by: Michael Grzeschik <mgr@pengutronix.de>
Acked-by: Michael Grzeschik <mgr@pengutronix.de>
Tested-by: Michael Grzeschik <mgr@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 28 |
1 files changed, 8 insertions, 20 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 0a61c6688bc1..0dc56aebb807 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -178,19 +178,6 @@ static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir) } /** - * hw_test_and_clear_setup_status: test & clear setup status (execute without - * interruption) - * @n: endpoint number - * - * This function returns setup status - */ -static int hw_test_and_clear_setup_status(struct ci_hdrc *ci, int n) -{ - n = ep_to_bit(ci, n); - return hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(n)); -} - -/** * hw_ep_prime: primes endpoint (execute without interruption) * @num: endpoint number * @dir: endpoint direction @@ -997,14 +984,10 @@ __acquires(ci->lock) } } - if (hwep->type != USB_ENDPOINT_XFER_CONTROL || - !hw_test_and_clear_setup_status(ci, i)) - continue; - - if (i != 0) { - dev_warn(ci->dev, "ctrl traffic at endpoint %d\n", i); + /* Only handle setup packet below */ + if (i != 0 || + !hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0))) continue; - } /* * Flush data and handshake transactions of previous @@ -1193,6 +1176,11 @@ static int ep_enable(struct usb_ep *ep, hwep->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */ + if (hwep->num != 0 && hwep->type == USB_ENDPOINT_XFER_CONTROL) { + dev_err(hwep->ci->dev, "Set control xfer at non-ep0\n"); + retval = -EINVAL; + } + /* * Enable endpoints in the HW other than ep0 as ep0 * is always enabled |