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staging: octeon-usb: don't retry on data toggle error 

On data toggle error, we don't know if and how many bytes were
successfully transferred by DMA. We should just fail the transaction
instead of trying a retry.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aaro Koskinen 2014-06-29 22:52:54 +03:00 committed by Greg Kroah-Hartman
parent e5b90898d6
commit d8c39d3f20
1 changed files with 3 additions and 2 deletions
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5
drivers/staging/octeon-usb/octeon-hcd.c
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@ -2840,8 +2840,9 @@ static int __cvmx_usb_poll_channel(struct cvmx_usb_state *usb, int channel)
__cvmx_usb_perform_complete(usb, pipe, transaction,
CVMX_USB_COMPLETE_BABBLEERR);
} else if (usbc_hcint.s.datatglerr) {
/* We'll retry the exact same transaction again */
transaction->retries++;
/* Data toggle error */
__cvmx_usb_perform_complete(usb, pipe, transaction,
CVMX_USB_COMPLETE_DATATGLERR);
} else if (usbc_hcint.s.nyet) {
/*
* NYET as a response is only allowed in three cases: as a