@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * Xilinx EmacLite Linux driver for the Xilinx Ethernet MAC Lite device.
+/* Xilinx EmacLite Linux driver for the Xilinx Ethernet MAC Lite device.
*
* This is a new flat driver which is based on the original emac_lite
* driver from John Williams <john.williams@xilinx.com>.
@@ -91,8 +90,6 @@
#define XEL_ARP_PACKET_SIZE 28 /* Max ARP packet size */
#define XEL_HEADER_IP_LENGTH_OFFSET 16 /* IP Length Offset */
-
-
#define TX_TIMEOUT (60 * HZ) /* Tx timeout is 60 seconds. */
#define ALIGNMENT 4
@@ -124,7 +121,6 @@
* @last_link: last link status
*/
struct net_local {
-
struct net_device *ndev;
bool tx_ping_pong;
@@ -133,7 +129,7 @@ struct net_local {
u32 next_rx_buf_to_use;
void __iomem *base_addr;
- spinlock_t reset_lock;
+ spinlock_t reset_lock; /* lock used for synchronization */
struct sk_buff *deferred_skb;
struct phy_device *phy_dev;
@@ -144,7 +140,6 @@ struct net_local {
int last_link;
};
-
/*************************/
/* EmacLite driver calls */
/*************************/
@@ -207,7 +202,7 @@ static void xemaclite_disable_interrupts(struct net_local *drvdata)
* address in the EmacLite device.
*/
static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
- unsigned length)
+ unsigned int length)
{
u32 align_buffer;
u32 *to_u32_ptr;
@@ -264,7 +259,7 @@ static void xemaclite_aligned_write(void *src_ptr, u32 *dest_ptr,
* to a 16-bit aligned buffer.
*/
static void xemaclite_aligned_read(u32 *src_ptr, u8 *dest_ptr,
- unsigned length)
+ unsigned int length)
{
u16 *to_u16_ptr, *from_u16_ptr;
u32 *from_u32_ptr;
@@ -329,7 +324,6 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
reg_data = xemaclite_readl(addr + XEL_TSR_OFFSET);
if ((reg_data & (XEL_TSR_XMIT_BUSY_MASK |
XEL_TSR_XMIT_ACTIVE_MASK)) == 0) {
-
/* Switch to next buffer if configured */
if (drvdata->tx_ping_pong != 0)
drvdata->next_tx_buf_to_use ^= XEL_BUFFER_OFFSET;
@@ -345,8 +339,9 @@ static int xemaclite_send_data(struct net_local *drvdata, u8 *data,
if ((reg_data & (XEL_TSR_XMIT_BUSY_MASK |
XEL_TSR_XMIT_ACTIVE_MASK)) != 0)
return -1; /* Buffers were full, return failure */
- } else
+ } else {
return -1; /* Buffer was full, return failure */
+ }
/* Write the frame to the buffer */
xemaclite_aligned_write(data, (u32 __force *)addr, byte_count);
@@ -421,7 +416,6 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
* or an IP packet or an ARP packet
*/
if (proto_type > ETH_DATA_LEN) {
-
if (proto_type == ETH_P_IP) {
length = ((ntohl(xemaclite_readl(addr +
XEL_HEADER_IP_LENGTH_OFFSET +
@@ -431,23 +425,25 @@ static u16 xemaclite_recv_data(struct net_local *drvdata, u8 *data, int maxlen)
length = min_t(u16, length, ETH_DATA_LEN);
length += ETH_HLEN + ETH_FCS_LEN;
- } else if (proto_type == ETH_P_ARP)
+ } else if (proto_type == ETH_P_ARP) {
length = XEL_ARP_PACKET_SIZE + ETH_HLEN + ETH_FCS_LEN;
- else
+ } else {
/* Field contains type other than IP or ARP, use max
* frame size and let user parse it
*/
length = ETH_FRAME_LEN + ETH_FCS_LEN;
- } else
+ }
+ } else {
/* Use the length in the frame, plus the header and trailer */
length = proto_type + ETH_HLEN + ETH_FCS_LEN;
+ }
if (WARN_ON(length > maxlen))
length = maxlen;
/* Read from the EmacLite device */
xemaclite_aligned_read((u32 __force *)(addr + XEL_RXBUFF_OFFSET),
- data, length);
+ data, length);
/* Acknowledge the frame */
reg_data = xemaclite_readl(addr + XEL_RSR_OFFSET);
@@ -668,8 +664,7 @@ static irqreturn_t xemaclite_interrupt(int irq, void *dev_id)
/* Check if the Transmission for the first buffer is completed */
tx_status = xemaclite_readl(base_addr + XEL_TSR_OFFSET);
if (((tx_status & XEL_TSR_XMIT_BUSY_MASK) == 0) &&
- (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) {
-
+ (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) {
tx_status &= ~XEL_TSR_XMIT_ACTIVE_MASK;
xemaclite_writel(tx_status, base_addr + XEL_TSR_OFFSET);
@@ -679,8 +674,7 @@ static irqreturn_t xemaclite_interrupt(int irq, void *dev_id)
/* Check if the Transmission for the second buffer is completed */
tx_status = xemaclite_readl(base_addr + XEL_BUFFER_OFFSET + XEL_TSR_OFFSET);
if (((tx_status & XEL_TSR_XMIT_BUSY_MASK) == 0) &&
- (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) {
-
+ (tx_status & XEL_TSR_XMIT_ACTIVE_MASK) != 0) {
tx_status &= ~XEL_TSR_XMIT_ACTIVE_MASK;
xemaclite_writel(tx_status, base_addr + XEL_BUFFER_OFFSET +
XEL_TSR_OFFSET);
@@ -837,6 +831,7 @@ static int xemaclite_mdio_setup(struct net_local *lp, struct device *dev)
of_address_to_resource(npp, 0, &res);
if (lp->ndev->mem_start != res.start) {
struct phy_device *phydev;
+
phydev = of_phy_find_device(lp->phy_node);
if (!phydev)
dev_info(dev,
Make coding style changes to fix checkpatch script warnings. There is no functional change. Fixes below check and warnings- CHECK: Blank lines aren't necessary after an open brace '{' CHECK: spinlock_t definition without comment CHECK: Please don't use multiple blank lines WARNING: Prefer 'unsigned int' to bare use of 'unsigned' CHECK: braces {} should be used on all arms of this statement CHECK: Unbalanced braces around else statement CHECK: Alignment should match open parenthesis WARNING: Missing a blank line after declarations Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> --- drivers/net/ethernet/xilinx/xilinx_emaclite.c | 35 ++++++++++++--------------- 1 file changed, 15 insertions(+), 20 deletions(-)