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Date: Mon, 9 Nov 2020 11:26:13 +0100
From: Oliver Hartkopp <socketcan@...tkopp.net>
To: linux-can@...r.kernel.org, mkl@...gutronix.de,
mailhol.vincent@...adoo.fr
Cc: netdev@...r.kernel.org, Oliver Hartkopp <socketcan@...tkopp.net>
Subject: [PATCH v4 2/7] can: rename get_can_dlc() macro with can_get_cc_len()
The get_can_dlc() macro is used to ensure the payload length information of
the Classical CAN frame to be max 8 bytes (the CAN_MAX_DLEN).
Rename the macro and use the correct constant in preparation of the len/dlc
cleanup for Classical CAN frames.
Signed-off-by: Oliver Hartkopp <socketcan@...tkopp.net>
---
drivers/net/can/at91_can.c | 2 +-
drivers/net/can/c_can/c_can.c | 2 +-
drivers/net/can/cc770/cc770.c | 2 +-
drivers/net/can/flexcan.c | 2 +-
drivers/net/can/grcan.c | 2 +-
drivers/net/can/ifi_canfd/ifi_canfd.c | 2 +-
drivers/net/can/janz-ican3.c | 4 ++--
drivers/net/can/m_can/m_can.c | 2 +-
drivers/net/can/mscan/mscan.c | 2 +-
drivers/net/can/pch_can.c | 4 ++--
drivers/net/can/peak_canfd/peak_canfd.c | 2 +-
drivers/net/can/rcar/rcar_can.c | 2 +-
drivers/net/can/rcar/rcar_canfd.c | 4 ++--
drivers/net/can/sja1000/sja1000.c | 2 +-
drivers/net/can/softing/softing_main.c | 2 +-
drivers/net/can/spi/hi311x.c | 2 +-
drivers/net/can/spi/mcp251x.c | 4 ++--
drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c | 2 +-
drivers/net/can/sun4i_can.c | 2 +-
drivers/net/can/ti_hecc.c | 2 +-
drivers/net/can/usb/ems_usb.c | 2 +-
drivers/net/can/usb/esd_usb2.c | 2 +-
drivers/net/can/usb/gs_usb.c | 2 +-
drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c | 4 ++--
drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c | 4 ++--
drivers/net/can/usb/mcba_usb.c | 2 +-
drivers/net/can/usb/peak_usb/pcan_usb.c | 2 +-
drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 2 +-
drivers/net/can/usb/ucan.c | 8 ++++----
drivers/net/can/usb/usb_8dev.c | 2 +-
drivers/net/can/xilinx_can.c | 4 ++--
include/linux/can/dev.h | 8 ++++----
32 files changed, 45 insertions(+), 45 deletions(-)
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index c14de95d2ca7..cf515e3134dc 100644
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -578,11 +578,11 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb,
cf->can_id = ((reg_mid >> 0) & CAN_EFF_MASK) | CAN_EFF_FLAG;
else
cf->can_id = (reg_mid >> 18) & CAN_SFF_MASK;
reg_msr = at91_read(priv, AT91_MSR(mb));
- cf->can_dlc = get_can_dlc((reg_msr >> 16) & 0xf);
+ cf->can_dlc = can_get_cc_len((reg_msr >> 16) & 0xf);
if (reg_msr & AT91_MSR_MRTR)
cf->can_id |= CAN_RTR_FLAG;
else {
*(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb));
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 1ccdbe89585b..b36c69983f69 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -395,11 +395,11 @@ static int c_can_read_msg_object(struct net_device *dev, int iface, u32 ctrl)
if (!skb) {
stats->rx_dropped++;
return -ENOMEM;
}
- frame->can_dlc = get_can_dlc(ctrl & 0x0F);
+ frame->can_dlc = can_get_cc_len(ctrl & 0x0F);
arb = priv->read_reg32(priv, C_CAN_IFACE(ARB1_REG, iface));
if (arb & IF_ARB_MSGXTD)
frame->can_id = (arb & CAN_EFF_MASK) | CAN_EFF_FLAG;
diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
index 07e2b8df5153..55ebf006484e 100644
--- a/drivers/net/can/cc770/cc770.c
+++ b/drivers/net/can/cc770/cc770.c
@@ -484,11 +484,11 @@ static void cc770_rx(struct net_device *dev, unsigned int mo, u8 ctrl1)
id |= cc770_read_reg(priv, msgobj[mo].id[0]) << 8;
id >>= 5;
}
cf->can_id = id;
- cf->can_dlc = get_can_dlc((config & 0xf0) >> 4);
+ cf->can_dlc = can_get_cc_len((config & 0xf0) >> 4);
for (i = 0; i < cf->can_dlc; i++)
cf->data[i] = cc770_read_reg(priv, msgobj[mo].data[i]);
}
stats->rx_packets++;
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 881799bd9c5e..b30e3171cbd0 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -1001,11 +1001,11 @@ static struct sk_buff *flexcan_mailbox_read(struct can_rx_offload *offload,
cfd->len = can_dlc2len(get_canfd_dlc((reg_ctrl >> 16) & 0xf));
if (reg_ctrl & FLEXCAN_MB_CNT_BRS)
cfd->flags |= CANFD_BRS;
} else {
- cfd->len = get_can_dlc((reg_ctrl >> 16) & 0xf);
+ cfd->len = can_get_cc_len((reg_ctrl >> 16) & 0xf);
if (reg_ctrl & FLEXCAN_MB_CNT_RTR)
cfd->can_id |= CAN_RTR_FLAG;
}
diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c
index 39802f107eb1..56e6902b3121 100644
--- a/drivers/net/can/grcan.c
+++ b/drivers/net/can/grcan.c
@@ -1199,11 +1199,11 @@ static int grcan_receive(struct net_device *dev, int budget)
cf->can_id |= CAN_EFF_FLAG;
} else {
cf->can_id = ((slot[0] & GRCAN_MSG_BID)
>> GRCAN_MSG_BID_BIT);
}
- cf->can_dlc = get_can_dlc((slot[1] & GRCAN_MSG_DLC)
+ cf->can_dlc = can_get_cc_len((slot[1] & GRCAN_MSG_DLC)
>> GRCAN_MSG_DLC_BIT);
if (rtr) {
cf->can_id |= CAN_RTR_FLAG;
} else {
for (i = 0; i < cf->can_dlc; i++) {
diff --git a/drivers/net/can/ifi_canfd/ifi_canfd.c b/drivers/net/can/ifi_canfd/ifi_canfd.c
index 74503cacf594..67f6d72cdc71 100644
--- a/drivers/net/can/ifi_canfd/ifi_canfd.c
+++ b/drivers/net/can/ifi_canfd/ifi_canfd.c
@@ -271,11 +271,11 @@ static void ifi_canfd_read_fifo(struct net_device *ndev)
dlc = (rxdlc >> IFI_CANFD_RXFIFO_DLC_DLC_OFFSET) &
IFI_CANFD_RXFIFO_DLC_DLC_MASK;
if (rxdlc & IFI_CANFD_RXFIFO_DLC_EDL)
cf->len = can_dlc2len(dlc);
else
- cf->len = get_can_dlc(dlc);
+ cf->len = can_get_cc_len(dlc);
rxid = readl(priv->base + IFI_CANFD_RXFIFO_ID);
id = (rxid >> IFI_CANFD_RXFIFO_ID_ID_OFFSET);
if (id & IFI_CANFD_RXFIFO_ID_IDE) {
id &= IFI_CANFD_RXFIFO_ID_ID_XTD_MASK;
diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c
index f929db893957..a0af78b15319 100644
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@@ -914,14 +914,14 @@ static void ican3_to_can_frame(struct ican3_dev *mod,
if (desc->data[1] & ICAN3_SFF_RTR)
cf->can_id |= CAN_RTR_FLAG;
cf->can_id |= desc->data[0] << 3;
cf->can_id |= (desc->data[1] & 0xe0) >> 5;
- cf->can_dlc = get_can_dlc(desc->data[1] & ICAN3_CAN_DLC_MASK);
+ cf->can_dlc = can_get_cc_len(desc->data[1] & ICAN3_CAN_DLC_MASK);
memcpy(cf->data, &desc->data[2], cf->can_dlc);
} else {
- cf->can_dlc = get_can_dlc(desc->data[0] & ICAN3_CAN_DLC_MASK);
+ cf->can_dlc = can_get_cc_len(desc->data[0] & ICAN3_CAN_DLC_MASK);
if (desc->data[0] & ICAN3_EFF_RTR)
cf->can_id |= CAN_RTR_FLAG;
if (desc->data[0] & ICAN3_EFF) {
cf->can_id |= CAN_EFF_FLAG;
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 02c5795b7393..34cbb358731c 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -457,11 +457,11 @@ static void m_can_read_fifo(struct net_device *dev, u32 rxfs)
}
if (dlc & RX_BUF_FDF)
cf->len = can_dlc2len((dlc >> 16) & 0x0F);
else
- cf->len = get_can_dlc((dlc >> 16) & 0x0F);
+ cf->len = can_get_cc_len((dlc >> 16) & 0x0F);
id = m_can_fifo_read(cdev, fgi, M_CAN_FIFO_ID);
if (id & RX_BUF_XTD)
cf->can_id = (id & CAN_EFF_MASK) | CAN_EFF_FLAG;
else
diff --git a/drivers/net/can/mscan/mscan.c b/drivers/net/can/mscan/mscan.c
index 640ba1b356ec..153650b8341a 100644
--- a/drivers/net/can/mscan/mscan.c
+++ b/drivers/net/can/mscan/mscan.c
@@ -310,11 +310,11 @@ static void mscan_get_rx_frame(struct net_device *dev, struct can_frame *frame)
frame->can_id |= can_id >> 1;
if (can_id & 1)
frame->can_id |= CAN_RTR_FLAG;
- frame->can_dlc = get_can_dlc(in_8(®s->rx.dlr) & 0xf);
+ frame->can_dlc = can_get_cc_len(in_8(®s->rx.dlr) & 0xf);
if (!(frame->can_id & CAN_RTR_FLAG)) {
void __iomem *data = ®s->rx.dsr1_0;
u16 *payload = (u16 *)frame->data;
diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index 5c180d2f3c3c..86c610d7033f 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -681,11 +681,11 @@ static int pch_can_rx_normal(struct net_device *ndev, u32 obj_num, int quota)
}
if (id2 & PCH_ID2_DIR)
cf->can_id |= CAN_RTR_FLAG;
- cf->can_dlc = get_can_dlc((ioread32(&priv->regs->
+ cf->can_dlc = can_get_cc_len((ioread32(&priv->regs->
ifregs[0].mcont)) & 0xF);
for (i = 0; i < cf->can_dlc; i += 2) {
data_reg = ioread16(&priv->regs->ifregs[0].data[i / 2]);
cf->data[i] = data_reg;
@@ -713,11 +713,11 @@ static void pch_can_tx_complete(struct net_device *ndev, u32 int_stat)
can_get_echo_skb(ndev, int_stat - PCH_RX_OBJ_END - 1);
iowrite32(PCH_CMASK_RX_TX_GET | PCH_CMASK_CLRINTPND,
&priv->regs->ifregs[1].cmask);
pch_can_rw_msg_obj(&priv->regs->ifregs[1].creq, int_stat);
- dlc = get_can_dlc(ioread32(&priv->regs->ifregs[1].mcont) &
+ dlc = can_get_cc_len(ioread32(&priv->regs->ifregs[1].mcont) &
PCH_IF_MCONT_DLC);
stats->tx_bytes += dlc;
stats->tx_packets++;
if (int_stat == PCH_TX_OBJ_END)
netif_wake_queue(ndev);
diff --git a/drivers/net/can/peak_canfd/peak_canfd.c b/drivers/net/can/peak_canfd/peak_canfd.c
index 40c33b8a5fda..dc94ea6821c3 100644
--- a/drivers/net/can/peak_canfd/peak_canfd.c
+++ b/drivers/net/can/peak_canfd/peak_canfd.c
@@ -257,11 +257,11 @@ static int pucan_handle_can_rx(struct peak_canfd_priv *priv,
u8 cf_len;
if (rx_msg_flags & PUCAN_MSG_EXT_DATA_LEN)
cf_len = can_dlc2len(get_canfd_dlc(pucan_msg_get_dlc(msg)));
else
- cf_len = get_can_dlc(pucan_msg_get_dlc(msg));
+ cf_len = can_get_cc_len(pucan_msg_get_dlc(msg));
/* if this frame is an echo, */
if (rx_msg_flags & PUCAN_MSG_LOOPED_BACK) {
unsigned long flags;
diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c
index 48575900adb7..874cd0badf0f 100644
--- a/drivers/net/can/rcar/rcar_can.c
+++ b/drivers/net/can/rcar/rcar_can.c
@@ -657,11 +657,11 @@ static void rcar_can_rx_pkt(struct rcar_can_priv *priv)
cf->can_id = (data & CAN_EFF_MASK) | CAN_EFF_FLAG;
else
cf->can_id = (data >> RCAR_CAN_SID_SHIFT) & CAN_SFF_MASK;
dlc = readb(&priv->regs->mb[RCAR_CAN_RX_FIFO_MBX].dlc);
- cf->can_dlc = get_can_dlc(dlc);
+ cf->can_dlc = can_get_cc_len(dlc);
if (data & RCAR_CAN_RTR) {
cf->can_id |= CAN_RTR_FLAG;
} else {
for (dlc = 0; dlc < cf->can_dlc; dlc++)
cf->data[dlc] =
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index de59dd6aad29..7fc885dbdf56 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -1446,11 +1446,11 @@ static void rcar_canfd_rx_pkt(struct rcar_canfd_channel *priv)
if (priv->can.ctrlmode & CAN_CTRLMODE_FD) {
if (sts & RCANFD_RFFDSTS_RFFDF)
cf->len = can_dlc2len(RCANFD_RFPTR_RFDLC(dlc));
else
- cf->len = get_can_dlc(RCANFD_RFPTR_RFDLC(dlc));
+ cf->len = can_get_cc_len(RCANFD_RFPTR_RFDLC(dlc));
if (sts & RCANFD_RFFDSTS_RFESI) {
cf->flags |= CANFD_ESI;
netdev_dbg(priv->ndev, "ESI Error\n");
}
@@ -1462,11 +1462,11 @@ static void rcar_canfd_rx_pkt(struct rcar_canfd_channel *priv)
cf->flags |= CANFD_BRS;
rcar_canfd_get_data(priv, cf, RCANFD_F_RFDF(ridx, 0));
}
} else {
- cf->len = get_can_dlc(RCANFD_RFPTR_RFDLC(dlc));
+ cf->len = can_get_cc_len(RCANFD_RFPTR_RFDLC(dlc));
if (id & RCANFD_RFID_RFRTR)
cf->can_id |= CAN_RTR_FLAG;
else
rcar_canfd_get_data(priv, cf, RCANFD_C_RFDF(ridx, 0));
}
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 9f107798f904..ddb09172c1af 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -365,11 +365,11 @@ static void sja1000_rx(struct net_device *dev)
dreg = SJA1000_SFF_BUF;
id = (priv->read_reg(priv, SJA1000_ID1) << 3)
| (priv->read_reg(priv, SJA1000_ID2) >> 5);
}
- cf->can_dlc = get_can_dlc(fi & 0x0F);
+ cf->can_dlc = can_get_cc_len(fi & 0x0F);
if (fi & SJA1000_FI_RTR) {
id |= CAN_RTR_FLAG;
} else {
for (i = 0; i < cf->can_dlc; i++)
cf->data[i] = priv->read_reg(priv, dreg++);
diff --git a/drivers/net/can/softing/softing_main.c b/drivers/net/can/softing/softing_main.c
index 9d2faaa39ce4..5cc175fd7067 100644
--- a/drivers/net/can/softing/softing_main.c
+++ b/drivers/net/can/softing/softing_main.c
@@ -259,11 +259,11 @@ static int softing_handle_1(struct softing *card)
}
} else {
if (cmd & CMD_RTR)
msg.can_id |= CAN_RTR_FLAG;
- msg.can_dlc = get_can_dlc(*ptr++);
+ msg.can_dlc = can_get_cc_len(*ptr++);
if (cmd & CMD_XTD) {
msg.can_id |= CAN_EFF_FLAG;
msg.can_id |= le32_to_cpup((void *)ptr);
ptr += 4;
} else {
diff --git a/drivers/net/can/spi/hi311x.c b/drivers/net/can/spi/hi311x.c
index 73d48c3b8ded..b182951dba52 100644
--- a/drivers/net/can/spi/hi311x.c
+++ b/drivers/net/can/spi/hi311x.c
@@ -339,11 +339,11 @@ static void hi3110_hw_rx(struct spi_device *spi)
(buf[HI3110_FIFO_WOTIME_ID_OFF] << 3) |
((buf[HI3110_FIFO_WOTIME_ID_OFF + 1] & 0xE0) >> 5);
}
/* Data length */
- frame->can_dlc = get_can_dlc(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F);
+ frame->can_dlc = can_get_cc_len(buf[HI3110_FIFO_WOTIME_DLC_OFF] & 0x0F);
if (buf[HI3110_FIFO_WOTIME_ID_OFF + 3] & HI3110_FIFO_WOTIME_ID_RTR)
frame->can_id |= CAN_RTR_FLAG;
else
memcpy(frame->data, buf + HI3110_FIFO_WOTIME_DAT_OFF,
diff --git a/drivers/net/can/spi/mcp251x.c b/drivers/net/can/spi/mcp251x.c
index 22d814ae4edc..5764f88f2347 100644
--- a/drivers/net/can/spi/mcp251x.c
+++ b/drivers/net/can/spi/mcp251x.c
@@ -662,11 +662,11 @@ static void mcp251x_hw_rx_frame(struct spi_device *spi, u8 *buf,
int i, len;
for (i = 1; i < RXBDAT_OFF; i++)
buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
- len = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
+ len = can_get_cc_len(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
for (; i < (RXBDAT_OFF + len); i++)
buf[i] = mcp251x_read_reg(spi, RXBCTRL(buf_idx) + i);
} else {
priv->spi_tx_buf[RXBCTRL_OFF] = INSTRUCTION_READ_RXB(buf_idx);
if (spi->controller->flags & SPI_CONTROLLER_HALF_DUPLEX) {
@@ -718,11 +718,11 @@ static void mcp251x_hw_rx(struct spi_device *spi, int buf_idx)
(buf[RXBSIDL_OFF] >> RXBSIDL_SHIFT);
if (buf[RXBSIDL_OFF] & RXBSIDL_SRR)
frame->can_id |= CAN_RTR_FLAG;
}
/* Data length */
- frame->can_dlc = get_can_dlc(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
+ frame->can_dlc = can_get_cc_len(buf[RXBDLC_OFF] & RXBDLC_LEN_MASK);
memcpy(frame->data, buf + RXBDAT_OFF, frame->can_dlc);
priv->net->stats.rx_packets++;
priv->net->stats.rx_bytes += frame->can_dlc;
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
index 9c215f7c5f81..ae9e9bafba23 100644
--- a/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
+++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd-core.c
@@ -1408,11 +1408,11 @@ mcp251xfd_hw_rx_obj_to_skb(const struct mcp251xfd_priv *priv,
cfd->len = can_dlc2len(get_canfd_dlc(dlc));
} else {
if (hw_rx_obj->flags & MCP251XFD_OBJ_FLAGS_RTR)
cfd->can_id |= CAN_RTR_FLAG;
- cfd->len = get_can_dlc(FIELD_GET(MCP251XFD_OBJ_FLAGS_DLC,
+ cfd->len = can_get_cc_len(FIELD_GET(MCP251XFD_OBJ_FLAGS_DLC,
hw_rx_obj->flags));
}
memcpy(cfd->data, hw_rx_obj->data, cfd->len);
}
diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index e2c6cf4b2228..28cc9e0f3982 100644
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -473,11 +473,11 @@ static void sun4i_can_rx(struct net_device *dev)
skb = alloc_can_skb(dev, &cf);
if (!skb)
return;
fi = readl(priv->base + SUN4I_REG_BUF0_ADDR);
- cf->can_dlc = get_can_dlc(fi & 0x0F);
+ cf->can_dlc = can_get_cc_len(fi & 0x0F);
if (fi & SUN4I_MSG_EFF_FLAG) {
dreg = SUN4I_REG_BUF5_ADDR;
id = (readl(priv->base + SUN4I_REG_BUF1_ADDR) << 21) |
(readl(priv->base + SUN4I_REG_BUF2_ADDR) << 13) |
(readl(priv->base + SUN4I_REG_BUF3_ADDR) << 5) |
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 9913f5458279..02e4260fd8f2 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -564,11 +564,11 @@ static struct sk_buff *ti_hecc_mailbox_read(struct can_rx_offload *offload,
cf->can_id = (data >> 18) & CAN_SFF_MASK;
data = hecc_read_mbx(priv, mbxno, HECC_CANMCF);
if (data & HECC_CANMCF_RTR)
cf->can_id |= CAN_RTR_FLAG;
- cf->can_dlc = get_can_dlc(data & 0xF);
+ cf->can_dlc = can_get_cc_len(data & 0xF);
data = hecc_read_mbx(priv, mbxno, HECC_CANMDL);
*(__be32 *)(cf->data) = cpu_to_be32(data);
if (cf->can_dlc > 4) {
data = hecc_read_mbx(priv, mbxno, HECC_CANMDH);
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 4f52810bebf8..0ccf8c0f7db5 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -304,11 +304,11 @@ static void ems_usb_rx_can_msg(struct ems_usb *dev, struct ems_cpc_msg *msg)
skb = alloc_can_skb(dev->netdev, &cf);
if (skb == NULL)
return;
cf->can_id = le32_to_cpu(msg->msg.can_msg.id);
- cf->can_dlc = get_can_dlc(msg->msg.can_msg.length & 0xF);
+ cf->can_dlc = can_get_cc_len(msg->msg.can_msg.length & 0xF);
if (msg->type == CPC_MSG_TYPE_EXT_CAN_FRAME ||
msg->type == CPC_MSG_TYPE_EXT_RTR_FRAME)
cf->can_id |= CAN_EFF_FLAG;
diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index b5d7ed21d7d9..8752bda36b46 100644
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -319,11 +319,11 @@ static void esd_usb2_rx_can_msg(struct esd_usb2_net_priv *priv,
stats->rx_dropped++;
return;
}
cf->can_id = id & ESD_IDMASK;
- cf->can_dlc = get_can_dlc(msg->msg.rx.dlc & ~ESD_RTR);
+ cf->can_dlc = can_get_cc_len(msg->msg.rx.dlc & ~ESD_RTR);
if (id & ESD_EXTID)
cf->can_id |= CAN_EFF_FLAG;
if (msg->msg.rx.dlc & ESD_RTR) {
diff --git a/drivers/net/can/usb/gs_usb.c b/drivers/net/can/usb/gs_usb.c
index 3005157059ca..07fe84968391 100644
--- a/drivers/net/can/usb/gs_usb.c
+++ b/drivers/net/can/usb/gs_usb.c
@@ -329,11 +329,11 @@ static void gs_usb_receive_bulk_callback(struct urb *urb)
if (!skb)
return;
cf->can_id = hf->can_id;
- cf->can_dlc = get_can_dlc(hf->can_dlc);
+ cf->can_dlc = can_get_cc_len(hf->can_dlc);
memcpy(cf->data, hf->data, 8);
/* ERROR frames tell us information about the controller */
if (hf->can_id & CAN_ERR_FLAG)
gs_update_state(dev, cf);
diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
index 7ab87a758754..1626f73337ab 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_hydra.c
@@ -1178,11 +1178,11 @@ static void kvaser_usb_hydra_rx_msg_std(const struct kvaser_usb *dev,
}
if (flags & KVASER_USB_HYDRA_CF_FLAG_OVERRUN)
kvaser_usb_can_rx_over_error(priv->netdev);
- cf->can_dlc = get_can_dlc(cmd->rx_can.dlc);
+ cf->can_dlc = can_get_cc_len(cmd->rx_can.dlc);
if (flags & KVASER_USB_HYDRA_CF_FLAG_REMOTE_FRAME)
cf->can_id |= CAN_RTR_FLAG;
else
memcpy(cf->data, cmd->rx_can.data, cf->can_dlc);
@@ -1255,11 +1255,11 @@ static void kvaser_usb_hydra_rx_msg_ext(const struct kvaser_usb *dev,
if (flags & KVASER_USB_HYDRA_CF_FLAG_BRS)
cf->flags |= CANFD_BRS;
if (flags & KVASER_USB_HYDRA_CF_FLAG_ESI)
cf->flags |= CANFD_ESI;
} else {
- cf->len = get_can_dlc(dlc);
+ cf->len = can_get_cc_len(dlc);
}
if (flags & KVASER_USB_HYDRA_CF_FLAG_REMOTE_FRAME)
cf->can_id |= CAN_RTR_FLAG;
else
diff --git a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
index 1b9957f12459..dcc5aa022e8f 100644
--- a/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
+++ b/drivers/net/can/usb/kvaser_usb/kvaser_usb_leaf.c
@@ -976,11 +976,11 @@ static void kvaser_usb_leaf_rx_can_msg(const struct kvaser_usb *dev,
if (cf->can_id & KVASER_EXTENDED_FRAME)
cf->can_id &= CAN_EFF_MASK | CAN_EFF_FLAG;
else
cf->can_id &= CAN_SFF_MASK;
- cf->can_dlc = get_can_dlc(cmd->u.leaf.log_message.dlc);
+ cf->can_dlc = can_get_cc_len(cmd->u.leaf.log_message.dlc);
if (cmd->u.leaf.log_message.flags & MSG_FLAG_REMOTE_FRAME)
cf->can_id |= CAN_RTR_FLAG;
else
memcpy(cf->data, &cmd->u.leaf.log_message.data,
@@ -994,11 +994,11 @@ static void kvaser_usb_leaf_rx_can_msg(const struct kvaser_usb *dev,
((rx_data[3] & 0xff) << 6) |
(rx_data[4] & 0x3f);
cf->can_id |= CAN_EFF_FLAG;
}
- cf->can_dlc = get_can_dlc(rx_data[5]);
+ cf->can_dlc = can_get_cc_len(rx_data[5]);
if (cmd->u.rx_can_header.flag & MSG_FLAG_REMOTE_FRAME)
cf->can_id |= CAN_RTR_FLAG;
else
memcpy(cf->data, &rx_data[6], cf->can_dlc);
diff --git a/drivers/net/can/usb/mcba_usb.c b/drivers/net/can/usb/mcba_usb.c
index 5857b37dcd96..14352718b004 100644
--- a/drivers/net/can/usb/mcba_usb.c
+++ b/drivers/net/can/usb/mcba_usb.c
@@ -449,11 +449,11 @@ static void mcba_usb_process_can(struct mcba_priv *priv,
}
if (msg->dlc & MCBA_DLC_RTR_MASK)
cf->can_id |= CAN_RTR_FLAG;
- cf->can_dlc = get_can_dlc(msg->dlc & MCBA_DLC_MASK);
+ cf->can_dlc = can_get_cc_len(msg->dlc & MCBA_DLC_MASK);
memcpy(cf->data, msg->data, cf->can_dlc);
stats->rx_packets++;
stats->rx_bytes += cf->can_dlc;
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb.c b/drivers/net/can/usb/peak_usb/pcan_usb.c
index 63bd2ed96697..5df74533ba4d 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb.c
@@ -732,11 +732,11 @@ static int pcan_usb_decode_data(struct pcan_usb_msg_context *mc, u8 status_len)
mc->ptr += 2;
cf->can_id = le16_to_cpu(tmp16) >> 5;
}
- cf->can_dlc = get_can_dlc(rec_len);
+ cf->can_dlc = can_get_cc_len(rec_len);
/* Only first packet timestamp is a word */
if (pcan_usb_decode_ts(mc, !mc->rec_ts_idx))
goto decode_failed;
diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
index d29d20525588..cf32bcfabba3 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c
@@ -497,11 +497,11 @@ static int pcan_usb_fd_decode_canmsg(struct pcan_usb_fd_if *usb_if,
/* CAN 2.0 frame case */
skb = alloc_can_skb(netdev, (struct can_frame **)&cfd);
if (!skb)
return -ENOMEM;
- cfd->len = get_can_dlc(pucan_msg_get_dlc(rm));
+ cfd->len = can_get_cc_len(pucan_msg_get_dlc(rm));
}
cfd->can_id = le32_to_cpu(rm->can_id);
if (rx_msg_flags & PUCAN_MSG_EXT_ID)
diff --git a/drivers/net/can/usb/ucan.c b/drivers/net/can/usb/ucan.c
index dc5290b36598..ea11a3f0392b 100644
--- a/drivers/net/can/usb/ucan.c
+++ b/drivers/net/can/usb/ucan.c
@@ -301,16 +301,16 @@ struct ucan_priv {
spinlock_t context_lock;
unsigned int available_tx_urbs;
struct ucan_urb_context *context_array;
};
-static u8 ucan_get_can_dlc(struct ucan_can_msg *msg, u16 len)
+static u8 ucan_can_get_cc_len(struct ucan_can_msg *msg, u16 len)
{
if (le32_to_cpu(msg->id) & CAN_RTR_FLAG)
- return get_can_dlc(msg->dlc);
+ return can_get_cc_len(msg->dlc);
else
- return get_can_dlc(len - (UCAN_IN_HDR_SIZE + sizeof(msg->id)));
+ return can_get_cc_len(len - (UCAN_IN_HDR_SIZE + sizeof(msg->id)));
}
static void ucan_release_context_array(struct ucan_priv *up)
{
if (!up->context_array)
@@ -612,11 +612,11 @@ static void ucan_rx_can_msg(struct ucan_priv *up, struct ucan_message_in *m)
/* fill the can frame */
cf->can_id = canid;
/* compute DLC taking RTR_FLAG into account */
- cf->can_dlc = ucan_get_can_dlc(&m->msg.can_msg, len);
+ cf->can_dlc = ucan_can_get_cc_len(&m->msg.can_msg, len);
/* copy the payload of non RTR frames */
if (!(cf->can_id & CAN_RTR_FLAG) || (cf->can_id & CAN_ERR_FLAG))
memcpy(cf->data, m->msg.can_msg.data, cf->can_dlc);
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index 62749c67c959..9d1597ad7ba4 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -468,11 +468,11 @@ static void usb_8dev_rx_can_msg(struct usb_8dev_priv *priv,
skb = alloc_can_skb(priv->netdev, &cf);
if (!skb)
return;
cf->can_id = be32_to_cpu(msg->id);
- cf->can_dlc = get_can_dlc(msg->dlc & 0xF);
+ cf->can_dlc = can_get_cc_len(msg->dlc & 0xF);
if (msg->flags & USB_8DEV_EXTID)
cf->can_id |= CAN_EFF_FLAG;
if (msg->flags & USB_8DEV_RTR)
diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index 48d746e18f30..1740fbc371c4 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -757,11 +757,11 @@ static int xcan_rx(struct net_device *ndev, int frame_base)
id_xcan = priv->read_reg(priv, XCAN_FRAME_ID_OFFSET(frame_base));
dlc = priv->read_reg(priv, XCAN_FRAME_DLC_OFFSET(frame_base)) >>
XCAN_DLCR_DLC_SHIFT;
/* Change Xilinx CAN data length format to socketCAN data format */
- cf->can_dlc = get_can_dlc(dlc);
+ cf->can_dlc = can_get_cc_len(dlc);
/* Change Xilinx CAN ID format to socketCAN ID format */
if (id_xcan & XCAN_IDR_IDE_MASK) {
/* The received frame is an Extended format frame */
cf->can_id = (id_xcan & XCAN_IDR_ID1_MASK) >> 3;
@@ -833,11 +833,11 @@ static int xcanfd_rx(struct net_device *ndev, int frame_base)
*/
if (dlc & XCAN_DLCR_EDL_MASK)
cf->len = can_dlc2len((dlc & XCAN_DLCR_DLC_MASK) >>
XCAN_DLCR_DLC_SHIFT);
else
- cf->len = get_can_dlc((dlc & XCAN_DLCR_DLC_MASK) >>
+ cf->len = can_get_cc_len((dlc & XCAN_DLCR_DLC_MASK) >>
XCAN_DLCR_DLC_SHIFT);
/* Change Xilinx CAN ID format to socketCAN ID format */
if (id_xcan & XCAN_IDR_IDE_MASK) {
/* The received frame is an Extended format frame */
diff --git a/include/linux/can/dev.h b/include/linux/can/dev.h
index 41ff31795320..92463cda7ac8 100644
--- a/include/linux/can/dev.h
+++ b/include/linux/can/dev.h
@@ -96,18 +96,18 @@ static inline unsigned int can_bit_time(const struct can_bittiming *bt)
{
return CAN_SYNC_SEG + bt->prop_seg + bt->phase_seg1 + bt->phase_seg2;
}
/*
- * get_can_dlc(value) - helper macro to cast a given data length code (dlc)
- * to u8 and ensure the dlc value to be max. 8 bytes.
+ * can_get_cc_len(value) - convert a given data length code (dlc) of a
+ * Classical CAN frame into a valid data length of max. 8 bytes.
*
* To be used in the CAN netdriver receive path to ensure conformance with
* ISO 11898-1 Chapter 8.4.2.3 (DLC field)
*/
-#define get_can_dlc(i) (min_t(u8, (i), CAN_MAX_DLC))
-#define get_canfd_dlc(i) (min_t(u8, (i), CANFD_MAX_DLC))
+#define can_get_cc_len(dlc) (min_t(u8, (dlc), CAN_MAX_DLEN))
+#define get_canfd_dlc(dlc) (min_t(u8, (dlc), CANFD_MAX_DLC))
/* Check for outgoing skbs that have not been created by the CAN subsystem */
static inline bool can_skb_headroom_valid(struct net_device *dev,
struct sk_buff *skb)
{
--
2.28.0
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