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由 Michael Reiss 提交于
Based partly on the gianfar driver, this patch fixes several bugs which were causing NAPI to be completely unusable. * An IRQ is still needed in NAPI, to kick off NAPI task, and for Tx processing. Request the IRQ. * If rx_work_limit = 0 we are not complete. * While running Rx NAPI processing we must mask Rx events, including Rx busy. * ucc_geth_rx function does not need a lock. Could lead to deadlock in NAPI case. * There's no need to loop reading ucce multiple times in the ISR, so while adding the call to schedule NAPI which was not there, simplify the event processing into if-else format. * Rx Busy now kicks off NAPI processing, while still being counted as an error. Signed-off-by: NMichael Reiss <michael.f.reiss@freescale.com> Signed-off-by: NMichael Barkowski <michael.barkowski@freescale.com> Signed-off-by: NKim Phillips <kim.phillips@freescale.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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