diff options
| author | Dinh Nguyen <Dinh.Nguyen@freescale.com> | 2008-02-12 09:22:06 -0600 |
|---|---|---|
| committer | Daniel Schaeffer <daniel.schaeffer@timesys.com> | 2008-08-25 15:20:37 -0400 |
| commit | dafdb693ecb00d481c19ba42327b311e8a906738 (patch) | |
| tree | 7cc551d328aabaee19ca659013ae3196c83b54ad /drivers | |
| parent | 973c485f7f3e8849bce29589aa23e27fc035953c (diff) | |
ENGR00064466 Fix issue of missing ACK in status phase
Added a fix for USB Specification 8.5.3.3 Error Handling
on the Last Data Transaction
Signed-off-by: Dinh L. Nguyen <Dinh.Nguyen@freescale.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/gadget/arcotg_udc.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/usb/gadget/arcotg_udc.c b/drivers/usb/gadget/arcotg_udc.c index 3fff7ce11eb8..82415d27fe95 100644 --- a/drivers/usb/gadget/arcotg_udc.c +++ b/drivers/usb/gadget/arcotg_udc.c @@ -1,5 +1,5 @@ /* - * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2004-2008 Freescale Semiconductor, Inc. All Rights Reserved. */ /* @@ -1604,9 +1604,11 @@ static void setup_received_irq(struct arcotg_udc *udc, udc_reset_ep_queue(udc, 0); /* We asume setup only occurs on EP0 */ - if (setup->bRequestType & USB_DIR_IN) + if (setup->bRequestType & USB_DIR_IN) { + if (ep0_prime_status(udc, EP_DIR_OUT)) + Ep0Stall(udc); udc->ep0_dir = USB_DIR_IN; - else + } else udc->ep0_dir = USB_DIR_OUT; if ((setup->bRequestType & USB_TYPE_MASK) == USB_TYPE_CLASS) { @@ -1959,8 +1961,12 @@ static void dtd_complete_irq(struct arcotg_udc *udc) /* Clear the bits in the register */ bit_pos = usb_slave_regs->endptcomplete; usb_slave_regs->endptcomplete = bit_pos; - bit_pos = le32_to_cpu(bit_pos); + /* Clear the buffer if the ACK was missing from the IN ep */ + if (usb_slave_regs->endptstatus & 0x10000) + usb_slave_regs->endptflush |= 0x10000; + + bit_pos = le32_to_cpu(bit_pos); if (!bit_pos) return; |