From: Troy Kisky <[email protected]> Sent: Thursday, February 25,
2016 8:37 AM
> To: [email protected]; [email protected]; [email protected]
> Cc: [email protected]; [email protected]; [email protected];
> [email protected]; [email protected]; linux-arm-
> [email protected]; [email protected]; [email protected];
> [email protected]; [email protected];
> [email protected]; [email protected]; Troy Kisky
> <[email protected]>
> Subject: [PATCH net-next V2 13/16] net: fec: print more debug info in
> fec_timeout
>
> Print the current interrupt flags and mask and the interrupt state during the
> last
> interrupt in fec_timeout.
>
> Signed-off-by: Troy Kisky <[email protected]>
> ---
> drivers/net/ethernet/freescale/fec.h | 1 +
> drivers/net/ethernet/freescale/fec_main.c | 4 ++++
> 2 files changed, 5 insertions(+)
>
> diff --git a/drivers/net/ethernet/freescale/fec.h
> b/drivers/net/ethernet/freescale/fec.h
> index 001200b..615cca1 100644
> --- a/drivers/net/ethernet/freescale/fec.h
> +++ b/drivers/net/ethernet/freescale/fec.h
> @@ -506,6 +506,7 @@ struct fec_enet_private {
> unsigned int total_tx_ring_size;
> unsigned int total_rx_ring_size;
> uint events;
> + uint last_ievents;
>
> struct platform_device *pdev;
>
> diff --git a/drivers/net/ethernet/freescale/fec_main.c
> b/drivers/net/ethernet/freescale/fec_main.c
> index afd4060..9a3136b 100644
> --- a/drivers/net/ethernet/freescale/fec_main.c
> +++ b/drivers/net/ethernet/freescale/fec_main.c
> @@ -1107,6 +1107,9 @@ fec_timeout(struct net_device *ndev)
> int i;
> uint events = 0;
>
> + pr_err("%s: last=%x %x, mask %x\n", __func__, fep->last_ievents,
> + readl(fep->hwp + FEC_IEVENT), readl(fep->hwp + FEC_IMASK));
> +
pr_err() -> netdev_err()
I don't want the debug patch enter to the driver.
> for (i = 0; i < fep->num_tx_queues; i++) {
> struct fec_enet_priv_tx_q *txq = fep->tx_queue[i];
> int index;
> @@ -1514,6 +1517,7 @@ fec_enet_interrupt(int irq, void *dev_id)
>
> if (!int_events)
> return IRQ_NONE;
> + fep->last_ievents = int_events;
>
> if (int_events & (FEC_ENET_RXF | FEC_ENET_TXF)) {
> if (napi_schedule_prep(&fep->napi)) {
> --
> 2.5.0
