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arch: cxd56xx: Fix stall bulk xfer when sending 512 byte data

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Remove hardware zero length packet enhancement because of driver
logic already processed the ZLP correctly. It is unnecessary and cause
of IN interrupt lost.
This commit is contained in:
SPRESENSE 2022-10-24 12:18:58 +09:00 committed by Petro Karashchenko
parent 306029e6e4
commit 22a29fdc97
1 changed files with 0 additions and 8 deletions
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8
arch/arm/src/cxd56xx/cxd56_usbdev.c
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@ -757,14 +757,6 @@ static int cxd56_epwrite(struct cxd56_ep_s *privep, uint8_t *buf,
/* Set Poll bit to ready to send */
ctrl = getreg32(CXD56_USB_IN_EP_CONTROL(epphy));
/* Send NULL packet request */
if (privep->txnullpkt)
{
ctrl |= USB_SENDNULL;
}
putreg32(ctrl | USB_P | USB_CNAK, CXD56_USB_IN_EP_CONTROL(epphy));
return nbytes;