From 1e0b8120b2aef503f480b0e0182d7a7304acfb3d Mon Sep 17 00:00:00 2001 From: Edward Cree Date: Fri, 31 May 2013 18:36:12 +0100 Subject: sfc: Log all unexpected MCDI errors Split each of efx_mcdi_rpc, efx_mcdi_rpc_finish, and efx_mcdi_rpc_async into a normal and a _quiet version; made the former log MCDI errors with netif_err (and include the raw MCDI error code), and the latter never log them at all. Changed various callers; any where some errors are expected (but others are not) call the _quiet version and then if necessary log the MCDI error themselves. Said logging is done by new efx_mcdi_display_error. Callers of efx_mcdi_rpc*_quiet functions which may want to log the error need to ensure that their outbuf is big enough to hold an MCDI error; to this end, they now use MCDI_DECLARE_BUF_OUT_OR_ERR, which always allocates at least 8 bytes. Signed-off-by: Ben Hutchings --- drivers/net/ethernet/sfc/ptp.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) (limited to 'drivers/net/ethernet/sfc/ptp.c') diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c index 34b25864b121..24bd2e3040f8 100644 --- a/drivers/net/ethernet/sfc/ptp.c +++ b/drivers/net/ethernet/sfc/ptp.c @@ -313,6 +313,8 @@ static int efx_phc_enable(struct ptp_clock_info *ptp, static int efx_ptp_enable(struct efx_nic *efx) { MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_ENABLE_LEN); + MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, 0); + int rc; MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ENABLE); MCDI_SET_DWORD(inbuf, PTP_IN_PERIPH_ID, 0); @@ -320,8 +322,14 @@ static int efx_ptp_enable(struct efx_nic *efx) efx->ptp_data->channel->channel); MCDI_SET_DWORD(inbuf, PTP_IN_ENABLE_MODE, efx->ptp_data->mode); - return efx_mcdi_rpc(efx, MC_CMD_PTP, inbuf, sizeof(inbuf), - NULL, 0, NULL); + rc = efx_mcdi_rpc_quiet(efx, MC_CMD_PTP, inbuf, sizeof(inbuf), + outbuf, sizeof(outbuf), NULL); + rc = (rc == -EALREADY) ? 0 : rc; + if (rc) + efx_mcdi_display_error(efx, MC_CMD_PTP, + MC_CMD_PTP_IN_ENABLE_LEN, + outbuf, sizeof(outbuf), rc); + return rc; } /* Disable MCDI PTP support. @@ -332,11 +340,19 @@ static int efx_ptp_enable(struct efx_nic *efx) static int efx_ptp_disable(struct efx_nic *efx) { MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_DISABLE_LEN); + MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, 0); + int rc; MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_DISABLE); MCDI_SET_DWORD(inbuf, PTP_IN_PERIPH_ID, 0); - return efx_mcdi_rpc(efx, MC_CMD_PTP, inbuf, sizeof(inbuf), - NULL, 0, NULL); + rc = efx_mcdi_rpc_quiet(efx, MC_CMD_PTP, inbuf, sizeof(inbuf), + outbuf, sizeof(outbuf), NULL); + rc = (rc == -EALREADY) ? 0 : rc; + if (rc) + efx_mcdi_display_error(efx, MC_CMD_PTP, + MC_CMD_PTP_IN_DISABLE_LEN, + outbuf, sizeof(outbuf), rc); + return rc; } static void efx_ptp_deliver_rx_queue(struct sk_buff_head *q) -- cgit v1.2.3