From a2ec19f888f1fb06e2424486423a16f86ad1fcc4 Mon Sep 17 00:00:00 2001 From: Oliver Hartkopp Date: Sat, 21 Nov 2015 18:41:21 +0100 Subject: can: remove obsolete assignment for CAN protocol error type The assignment 'cf->data[2] |= CAN_ERR_PROT_UNSPEC' used at CAN error message creation time is obsolete as CAN_ERR_PROT_UNSPEC is zero and cf->data[2] is initialized with zero in alloc_can_err_skb() anyway. So we could either assign 'cf->data[2] = CAN_ERR_PROT_UNSPEC' correctly or we can remove the obsolete OR operation entirely. Signed-off-by: Oliver Hartkopp Signed-off-by: Marc Kleine-Budde --- drivers/net/can/bfin_can.c | 2 -- drivers/net/can/c_can/c_can.c | 1 - drivers/net/can/janz-ican3.c | 1 - drivers/net/can/m_can/m_can.c | 1 - drivers/net/can/rcar_can.c | 5 ++--- drivers/net/can/sja1000/sja1000.c | 1 - drivers/net/can/sun4i_can.c | 1 - drivers/net/can/ti_hecc.c | 1 - drivers/net/can/usb/ems_usb.c | 1 - drivers/net/can/usb/esd_usb2.c | 1 - drivers/net/can/usb/usb_8dev.c | 1 - drivers/net/can/xilinx_can.c | 4 +--- 12 files changed, 3 insertions(+), 17 deletions(-) diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c index 57dadd5..1deb8ff9 100644 --- a/drivers/net/can/bfin_can.c +++ b/drivers/net/can/bfin_can.c @@ -501,8 +501,6 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status) cf->data[2] |= CAN_ERR_PROT_FORM; else if (status & SER) cf->data[2] |= CAN_ERR_PROT_STUFF; - else - cf->data[2] |= CAN_ERR_PROT_UNSPEC; } priv->can.state = state; diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c index 7c9892ab..f91b094 100644 --- a/drivers/net/can/c_can/c_can.c +++ b/drivers/net/can/c_can/c_can.c @@ -962,7 +962,6 @@ static int c_can_handle_bus_err(struct net_device *dev, * type of the last error to occur on the CAN bus */ cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; - cf->data[2] |= CAN_ERR_PROT_UNSPEC; switch (lec_type) { case LEC_STUFF_ERROR: diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c index c1e8536..5d04f54 100644 --- a/drivers/net/can/janz-ican3.c +++ b/drivers/net/can/janz-ican3.c @@ -1096,7 +1096,6 @@ static int ican3_handle_cevtind(struct ican3_dev *mod, struct ican3_msg *msg) cf->data[2] |= CAN_ERR_PROT_STUFF; break; default: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = ecc & ECC_SEG; break; } diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c index 9dd3ca7..39cf911 100644 --- a/drivers/net/can/m_can/m_can.c +++ b/drivers/net/can/m_can/m_can.c @@ -487,7 +487,6 @@ static int m_can_handle_lec_err(struct net_device *dev, * type of the last error to occur on the CAN bus */ cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; - cf->data[2] |= CAN_ERR_PROT_UNSPEC; switch (lec_type) { case LEC_STUFF_ERROR: diff --git a/drivers/net/can/rcar_can.c b/drivers/net/can/rcar_can.c index 9161f04..bc46be3 100644 --- a/drivers/net/can/rcar_can.c +++ b/drivers/net/can/rcar_can.c @@ -241,10 +241,9 @@ static void rcar_can_error(struct net_device *ndev) u8 ecsr; netdev_dbg(priv->ndev, "Bus error interrupt:\n"); - if (skb) { + if (skb) cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT; - cf->data[2] = CAN_ERR_PROT_UNSPEC; - } + ecsr = readb(&priv->regs->ecsr); if (ecsr & RCAR_CAN_ECSR_ADEF) { netdev_dbg(priv->ndev, "ACK Delimiter Error\n"); diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index f10834b..8dda3b7 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -449,7 +449,6 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status) cf->data[2] |= CAN_ERR_PROT_STUFF; break; default: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = ecc & ECC_SEG; break; } diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c index d9a42c6..68ef0a4 100644 --- a/drivers/net/can/sun4i_can.c +++ b/drivers/net/can/sun4i_can.c @@ -575,7 +575,6 @@ static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status) cf->data[2] |= CAN_ERR_PROT_STUFF; break; default: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = (ecc & SUN4I_STA_ERR_SEG_CODE) >> 16; break; diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c index 6eab4fe..680d1ff 100644 --- a/drivers/net/can/ti_hecc.c +++ b/drivers/net/can/ti_hecc.c @@ -722,7 +722,6 @@ static int ti_hecc_error(struct net_device *ndev, int int_status, if (err_status & HECC_BUS_ERROR) { ++priv->can.can_stats.bus_error; cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT; - cf->data[2] |= CAN_ERR_PROT_UNSPEC; if (err_status & HECC_CANES_FE) { hecc_set_bit(priv, HECC_CANES, HECC_CANES_FE); cf->data[2] |= CAN_ERR_PROT_FORM; diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c index 2d39038..fc5b756 100644 --- a/drivers/net/can/usb/ems_usb.c +++ b/drivers/net/can/usb/ems_usb.c @@ -377,7 +377,6 @@ static void ems_usb_rx_err(struct ems_usb *dev, struct ems_cpc_msg *msg) cf->data[2] |= CAN_ERR_PROT_STUFF; break; default: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = ecc & SJA1000_ECC_SEG; break; } diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c index 0e5a449..113e64f 100644 --- a/drivers/net/can/usb/esd_usb2.c +++ b/drivers/net/can/usb/esd_usb2.c @@ -282,7 +282,6 @@ static void esd_usb2_rx_event(struct esd_usb2_net_priv *priv, cf->data[2] |= CAN_ERR_PROT_STUFF; break; default: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = ecc & SJA1000_ECC_SEG; break; } diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c index 017ae50..a731720 100644 --- a/drivers/net/can/usb/usb_8dev.c +++ b/drivers/net/can/usb/usb_8dev.c @@ -401,7 +401,6 @@ static void usb_8dev_rx_err_msg(struct usb_8dev_priv *priv, tx_errors = 1; break; case USB_8DEV_STATUSMSG_CRC: - cf->data[2] |= CAN_ERR_PROT_UNSPEC; cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ; rx_errors = 1; break; diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c index 4c57ddf..51670b3 100644 --- a/drivers/net/can/xilinx_can.c +++ b/drivers/net/can/xilinx_can.c @@ -608,10 +608,8 @@ static void xcan_err_interrupt(struct net_device *ndev, u32 isr) /* Check for error interrupt */ if (isr & XCAN_IXR_ERROR_MASK) { - if (skb) { + if (skb) cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR; - cf->data[2] |= CAN_ERR_PROT_UNSPEC; - } /* Check for Ack error interrupt */ if (err_status & XCAN_ESR_ACKER_MASK) { -- cgit v1.1