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authorDavid S. Miller <davem@davemloft.net>2021-05-24 14:07:39 -0700
committerDavid S. Miller <davem@davemloft.net>2021-05-24 14:07:39 -0700
commitc1eaf3c09c54bdc0886f8ecd6532803ab9d82454 (patch)
tree628a97eb477a84e5e462a0b795237e912cbea73b
parentMerge branch 'sja1105-sja1110-prep' (diff)
parentnet: wan: add braces {} to all arms of the statement (diff)
downloadwireguard-linux-davem/net-next.tar.xz
wireguard-linux-davem/net-next.zip
Merge branch 'wan-cleanups'davem/net-next
Guangbin Huang says: ==================== net: wan: clean up some code style issues This patchset clean up some code style issues. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/wan/wanxl.c186
1 files changed, 94 insertions, 92 deletions
diff --git a/drivers/net/wan/wanxl.c b/drivers/net/wan/wanxl.c
index f393684f203a..f22e48415e6f 100644
--- a/drivers/net/wan/wanxl.c
+++ b/drivers/net/wan/wanxl.c
@@ -32,7 +32,7 @@
#include "wanxl.h"
-static const char* version = "wanXL serial card driver version: 0.48";
+static const char *version = "wanXL serial card driver version: 0.48";
#define PLX_CTL_RESET 0x40000000 /* adapter reset */
@@ -50,24 +50,21 @@ static const char* version = "wanXL serial card driver version: 0.48";
/* MAILBOX #2 - DRAM SIZE */
#define MBX2_MEMSZ_MASK 0xFFFF0000 /* PUTS Memory Size Register mask */
-
struct port {
struct net_device *dev;
struct card *card;
spinlock_t lock; /* for wanxl_xmit */
- int node; /* physical port #0 - 3 */
+ int node; /* physical port #0 - 3 */
unsigned int clock_type;
int tx_in, tx_out;
struct sk_buff *tx_skbs[TX_BUFFERS];
};
-
struct card_status {
desc_t rx_descs[RX_QUEUE_LENGTH];
port_status_t port_status[4];
};
-
struct card {
int n_ports; /* 1, 2 or 4 ports */
u8 irq;
@@ -81,25 +78,22 @@ struct card {
struct port ports[]; /* 1 - 4 port structures follow */
};
-
-
static inline struct port *dev_to_port(struct net_device *dev)
{
return (struct port *)dev_to_hdlc(dev)->priv;
}
-
static inline port_status_t *get_status(struct port *port)
{
return &port->card->status->port_status[port->node];
}
-
#ifdef DEBUG_PCI
static inline dma_addr_t pci_map_single_debug(struct pci_dev *pdev, void *ptr,
size_t size, int direction)
{
dma_addr_t addr = dma_map_single(&pdev->dev, ptr, size, direction);
+
if (addr + size > 0x100000000LL)
pr_crit("%s: pci_map_single() returned memory at 0x%llx!\n",
pci_name(pdev), (unsigned long long)addr);
@@ -110,7 +104,6 @@ static inline dma_addr_t pci_map_single_debug(struct pci_dev *pdev, void *ptr,
#define pci_map_single pci_map_single_debug
#endif
-
/* Cable and/or personality module change interrupt service */
static inline void wanxl_cable_intr(struct port *port)
{
@@ -118,22 +111,46 @@ static inline void wanxl_cable_intr(struct port *port)
int valid = 1;
const char *cable, *pm, *dte = "", *dsr = "", *dcd = "";
- switch(value & 0x7) {
- case STATUS_CABLE_V35: cable = "V.35"; break;
- case STATUS_CABLE_X21: cable = "X.21"; break;
- case STATUS_CABLE_V24: cable = "V.24"; break;
- case STATUS_CABLE_EIA530: cable = "EIA530"; break;
- case STATUS_CABLE_NONE: cable = "no"; break;
- default: cable = "invalid";
+ switch (value & 0x7) {
+ case STATUS_CABLE_V35:
+ cable = "V.35";
+ break;
+ case STATUS_CABLE_X21:
+ cable = "X.21";
+ break;
+ case STATUS_CABLE_V24:
+ cable = "V.24";
+ break;
+ case STATUS_CABLE_EIA530:
+ cable = "EIA530";
+ break;
+ case STATUS_CABLE_NONE:
+ cable = "no";
+ break;
+ default:
+ cable = "invalid";
}
- switch((value >> STATUS_CABLE_PM_SHIFT) & 0x7) {
- case STATUS_CABLE_V35: pm = "V.35"; break;
- case STATUS_CABLE_X21: pm = "X.21"; break;
- case STATUS_CABLE_V24: pm = "V.24"; break;
- case STATUS_CABLE_EIA530: pm = "EIA530"; break;
- case STATUS_CABLE_NONE: pm = "no personality"; valid = 0; break;
- default: pm = "invalid personality"; valid = 0;
+ switch ((value >> STATUS_CABLE_PM_SHIFT) & 0x7) {
+ case STATUS_CABLE_V35:
+ pm = "V.35";
+ break;
+ case STATUS_CABLE_X21:
+ pm = "X.21";
+ break;
+ case STATUS_CABLE_V24:
+ pm = "V.24";
+ break;
+ case STATUS_CABLE_EIA530:
+ pm = "EIA530";
+ break;
+ case STATUS_CABLE_NONE:
+ pm = "no personality";
+ valid = 0;
+ break;
+ default:
+ pm = "invalid personality";
+ valid = 0;
}
if (valid) {
@@ -154,14 +171,13 @@ static inline void wanxl_cable_intr(struct port *port)
netif_carrier_off(port->dev);
}
-
-
/* Transmit complete interrupt service */
static inline void wanxl_tx_intr(struct port *port)
{
struct net_device *dev = port->dev;
+
while (1) {
- desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
+ desc_t *desc = &get_status(port)->tx_descs[port->tx_in];
struct sk_buff *skb = port->tx_skbs[port->tx_in];
switch (desc->stat) {
@@ -179,34 +195,33 @@ static inline void wanxl_tx_intr(struct port *port)
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
}
- desc->stat = PACKET_EMPTY; /* Free descriptor */
+ desc->stat = PACKET_EMPTY; /* Free descriptor */
dma_unmap_single(&port->card->pdev->dev, desc->address,
skb->len, DMA_TO_DEVICE);
dev_consume_skb_irq(skb);
- port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
- }
+ port->tx_in = (port->tx_in + 1) % TX_BUFFERS;
+ }
}
-
-
/* Receive complete interrupt service */
static inline void wanxl_rx_intr(struct card *card)
{
desc_t *desc;
+
while (desc = &card->status->rx_descs[card->rx_in],
desc->stat != PACKET_EMPTY) {
- if ((desc->stat & PACKET_PORT_MASK) > card->n_ports)
+ if ((desc->stat & PACKET_PORT_MASK) > card->n_ports) {
pr_crit("%s: received packet for nonexistent port\n",
pci_name(card->pdev));
- else {
+ } else {
struct sk_buff *skb = card->rx_skbs[card->rx_in];
struct port *port = &card->ports[desc->stat &
PACKET_PORT_MASK];
struct net_device *dev = port->dev;
- if (!skb)
+ if (!skb) {
dev->stats.rx_dropped++;
- else {
+ } else {
dma_unmap_single(&card->pdev->dev,
desc->address, BUFFER_LENGTH,
DMA_FROM_DEVICE);
@@ -239,21 +254,18 @@ static inline void wanxl_rx_intr(struct card *card)
}
}
-
-
-static irqreturn_t wanxl_intr(int irq, void* dev_id)
+static irqreturn_t wanxl_intr(int irq, void *dev_id)
{
struct card *card = dev_id;
- int i;
- u32 stat;
- int handled = 0;
-
+ int i;
+ u32 stat;
+ int handled = 0;
- while((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
- handled = 1;
+ while ((stat = readl(card->plx + PLX_DOORBELL_FROM_CARD)) != 0) {
+ handled = 1;
writel(stat, card->plx + PLX_DOORBELL_FROM_CARD);
- for (i = 0; i < card->n_ports; i++) {
+ for (i = 0; i < card->n_ports; i++) {
if (stat & (1 << (DOORBELL_FROM_CARD_TX_0 + i)))
wanxl_tx_intr(&card->ports[i]);
if (stat & (1 << (DOORBELL_FROM_CARD_CABLE_0 + i)))
@@ -261,23 +273,21 @@ static irqreturn_t wanxl_intr(int irq, void* dev_id)
}
if (stat & (1 << DOORBELL_FROM_CARD_RX))
wanxl_rx_intr(card);
- }
+ }
- return IRQ_RETVAL(handled);
+ return IRQ_RETVAL(handled);
}
-
-
static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct port *port = dev_to_port(dev);
desc_t *desc;
- spin_lock(&port->lock);
+ spin_lock(&port->lock);
desc = &get_status(port)->tx_descs[port->tx_out];
- if (desc->stat != PACKET_EMPTY) {
- /* should never happen - previous xmit should stop queue */
+ if (desc->stat != PACKET_EMPTY) {
+ /* should never happen - previous xmit should stop queue */
#ifdef DEBUG_PKT
printk(KERN_DEBUG "%s: transmitter buffer full\n", dev->name);
#endif
@@ -312,8 +322,6 @@ static netdev_tx_t wanxl_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
-
-
static int wanxl_attach(struct net_device *dev, unsigned short encoding,
unsigned short parity)
{
@@ -335,8 +343,6 @@ static int wanxl_attach(struct net_device *dev, unsigned short encoding,
return 0;
}
-
-
static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
{
const size_t size = sizeof(sync_serial_settings);
@@ -384,11 +390,9 @@ static int wanxl_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
default:
return hdlc_ioctl(dev, ifr, cmd);
- }
+ }
}
-
-
static int wanxl_open(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
@@ -400,7 +404,9 @@ static int wanxl_open(struct net_device *dev)
netdev_err(dev, "port already open\n");
return -EIO;
}
- if ((i = hdlc_open(dev)) != 0)
+
+ i = hdlc_open(dev);
+ if (i)
return i;
port->tx_in = port->tx_out = 0;
@@ -423,8 +429,6 @@ static int wanxl_open(struct net_device *dev)
return -EFAULT;
}
-
-
static int wanxl_close(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
@@ -461,8 +465,6 @@ static int wanxl_close(struct net_device *dev)
return 0;
}
-
-
static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
{
struct port *port = dev_to_port(dev);
@@ -474,8 +476,6 @@ static struct net_device_stats *wanxl_get_stats(struct net_device *dev)
return &dev->stats;
}
-
-
static int wanxl_puts_command(struct card *card, u32 cmd)
{
unsigned long timeout = jiffies + 5 * HZ;
@@ -486,13 +486,11 @@ static int wanxl_puts_command(struct card *card, u32 cmd)
return 0;
schedule();
- }while (time_after(timeout, jiffies));
+ } while (time_after(timeout, jiffies));
return -1;
}
-
-
static void wanxl_reset(struct card *card)
{
u32 old_value = readl(card->plx + PLX_CONTROL) & ~PLX_CTL_RESET;
@@ -505,8 +503,6 @@ static void wanxl_reset(struct card *card)
readl(card->plx + PLX_CONTROL); /* wait for posted write */
}
-
-
static void wanxl_pci_remove_one(struct pci_dev *pdev)
{
struct card *card = pci_get_drvdata(pdev);
@@ -543,7 +539,6 @@ static void wanxl_pci_remove_one(struct pci_dev *pdev)
kfree(card);
}
-
#include "wanxlfw.inc"
static const struct net_device_ops wanxl_ops = {
@@ -574,12 +569,14 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
return i;
/* QUICC can only access first 256 MB of host RAM directly,
- but PLX9060 DMA does 32-bits for actual packet data transfers */
+ * but PLX9060 DMA does 32-bits for actual packet data transfers
+ */
/* FIXME when PCI/DMA subsystems are fixed.
- We set both dma_mask and consistent_dma_mask to 28 bits
- and pray pci_alloc_consistent() will use this info. It should
- work on most platforms */
+ * We set both dma_mask and consistent_dma_mask to 28 bits
+ * and pray pci_alloc_consistent() will use this info. It should
+ * work on most platforms
+ */
if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(28)) ||
dma_set_mask(&pdev->dev, DMA_BIT_MASK(28))) {
pr_err("No usable DMA configuration\n");
@@ -594,13 +591,18 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
}
switch (pdev->device) {
- case PCI_DEVICE_ID_SBE_WANXL100: ports = 1; break;
- case PCI_DEVICE_ID_SBE_WANXL200: ports = 2; break;
- default: ports = 4;
+ case PCI_DEVICE_ID_SBE_WANXL100:
+ ports = 1;
+ break;
+ case PCI_DEVICE_ID_SBE_WANXL200:
+ ports = 2;
+ break;
+ default:
+ ports = 4;
}
card = kzalloc(struct_size(card, ports, ports), GFP_KERNEL);
- if (card == NULL) {
+ if (!card) {
pci_release_regions(pdev);
pci_disable_device(pdev);
return -ENOBUFS;
@@ -612,7 +614,7 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
card->status = dma_alloc_coherent(&pdev->dev,
sizeof(struct card_status),
&card->status_address, GFP_KERNEL);
- if (card->status == NULL) {
+ if (!card->status) {
wanxl_pci_remove_one(pdev);
return -ENOBUFS;
}
@@ -624,8 +626,9 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
#endif
/* FIXME when PCI/DMA subsystems are fixed.
- We set both dma_mask and consistent_dma_mask back to 32 bits
- to indicate the card can do 32-bit DMA addressing */
+ * We set both dma_mask and consistent_dma_mask back to 32 bits
+ * to indicate the card can do 32-bit DMA addressing
+ */
if (dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(32)) ||
dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
pr_err("No usable DMA configuration\n");
@@ -656,7 +659,7 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
return -ENODEV;
}
- switch(stat & 0xC0) {
+ switch (stat & 0xC0) {
case 0x00: /* hmm - PUTS completed with non-zero code? */
case 0x80: /* PUTS still testing the hardware */
break;
@@ -677,7 +680,6 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
/* set up on-board RAM mapping */
mem_phy = pci_resource_start(pdev, 2);
-
/* sanity check the board's reported memory size */
if (ramsize < BUFFERS_ADDR +
(TX_BUFFERS + RX_BUFFERS) * BUFFER_LENGTH * ports) {
@@ -697,6 +699,7 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
for (i = 0; i < RX_QUEUE_LENGTH; i++) {
struct sk_buff *skb = dev_alloc_skb(BUFFER_LENGTH);
+
card->rx_skbs[i] = skb;
if (skb)
card->status->rx_descs[i].address =
@@ -712,7 +715,7 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
}
for (i = 0; i < sizeof(firmware); i += 4)
- writel(ntohl(*(__be32*)(firmware + i)), mem + PDM_OFFSET + i);
+ writel(ntohl(*(__be32 *)(firmware + i)), mem + PDM_OFFSET + i);
for (i = 0; i < ports; i++)
writel(card->status_address +
@@ -732,10 +735,11 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
timeout = jiffies + 5 * HZ;
do {
- if ((stat = readl(card->plx + PLX_MAILBOX_5)) != 0)
+ stat = readl(card->plx + PLX_MAILBOX_5);
+ if (stat)
break;
schedule();
- }while (time_after(timeout, jiffies));
+ } while (time_after(timeout, jiffies));
if (!stat) {
pr_warn("%s: timeout while initializing card firmware\n",
@@ -764,6 +768,7 @@ static int wanxl_pci_init_one(struct pci_dev *pdev,
hdlc_device *hdlc;
struct port *port = &card->ports[i];
struct net_device *dev = alloc_hdlcdev(port);
+
if (!dev) {
pr_err("%s: unable to allocate memory\n",
pci_name(pdev));
@@ -813,7 +818,6 @@ static const struct pci_device_id wanxl_pci_tbl[] = {
{ 0, }
};
-
static struct pci_driver wanxl_pci_driver = {
.name = "wanXL",
.id_table = wanxl_pci_tbl,
@@ -821,7 +825,6 @@ static struct pci_driver wanxl_pci_driver = {
.remove = wanxl_pci_remove_one,
};
-
static int __init wanxl_init_module(void)
{
#ifdef MODULE
@@ -835,7 +838,6 @@ static void __exit wanxl_cleanup_module(void)
pci_unregister_driver(&wanxl_pci_driver);
}
-
MODULE_AUTHOR("Krzysztof Halasa <khc@pm.waw.pl>");
MODULE_DESCRIPTION("SBE Inc. wanXL serial port driver");
MODULE_LICENSE("GPL v2");