1 files changed, 8 insertions, 120 deletions

diff --git a/drivers/net/s2io.c b/drivers/net/s2io.c
index dcbe01b0ca0..157fd932e95 100644
--- a/drivers/net/s2io.c
+++ b/drivers/net/s2io.c
@@ -86,7 +86,7 @@
 #include "s2io.h"
 #include "s2io-regs.h"
 
-#define DRV_VERSION "2.0.26.20"
+#define DRV_VERSION "2.0.26.22"
 
 /* S2io Driver name & version. */
 static char s2io_driver_name[] = "Neterion";
@@ -117,20 +117,6 @@ static inline int RXD_IS_UP2DT(struct RxD_t *rxdp)
 
 #define LINK_IS_UP(val64) (!(val64 & (ADAPTER_STATUS_RMAC_REMOTE_FAULT | \
 				      ADAPTER_STATUS_RMAC_LOCAL_FAULT)))
-#define TASKLET_IN_USE test_and_set_bit(0, (&sp->tasklet_status))
-#define PANIC	1
-#define LOW	2
-static inline int rx_buffer_level(struct s2io_nic * sp, int rxb_size, int ring)
-{
-	struct mac_info *mac_control;
-
-	mac_control = &sp->mac_control;
-	if (rxb_size <= rxd_count[sp->rxd_mode])
-		return PANIC;
-	else if ((mac_control->rings[ring].pkt_cnt - rxb_size) > 16)
-		return  LOW;
-	return 0;
-}
 
 static inline int is_s2io_card_up(const struct s2io_nic * sp)
 {
@@ -2458,7 +2444,7 @@ static void free_tx_buffers(struct s2io_nic *nic)
 	for (i = 0; i < config->tx_fifo_num; i++) {
 		unsigned long flags;
 		spin_lock_irqsave(&mac_control->fifos[i].tx_lock, flags);
-		for (j = 0; j < config->tx_cfg[i].fifo_len - 1; j++) {
+		for (j = 0; j < config->tx_cfg[i].fifo_len; j++) {
 			txdp = (struct TxD *) \
 			mac_control->fifos[i].list_info[j].list_virt_addr;
 			skb = s2io_txdl_getskb(&mac_control->fifos[i], txdp, j);
@@ -2544,7 +2530,6 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
 	struct config_param *config;
 	u64 tmp;
 	struct buffAdd *ba;
-	unsigned long flags;
 	struct RxD_t *first_rxdp = NULL;
 	u64 Buffer0_ptr = 0, Buffer1_ptr = 0;
 	struct RxD1 *rxdp1;
@@ -2592,15 +2577,7 @@ static int fill_rx_buffers(struct s2io_nic *nic, int ring_no)
 			DBG_PRINT(INTR_DBG, "%s: Next block at: %p\n",
 				  dev->name, rxdp);
 		}
-		if(!napi) {
-			spin_lock_irqsave(&nic->put_lock, flags);
-			mac_control->rings[ring_no].put_pos =
-			(block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
-			spin_unlock_irqrestore(&nic->put_lock, flags);
-		} else {
-			mac_control->rings[ring_no].put_pos =
-			(block_no * (rxd_count[nic->rxd_mode] + 1)) + off;
-		}
+
 		if ((rxdp->Control_1 & RXD_OWN_XENA) &&
 			((nic->rxd_mode == RXD_MODE_3B) &&
 				(rxdp->Control_2 & s2BIT(0)))) {
@@ -2978,7 +2955,7 @@ static void rx_intr_handler(struct ring_info *ring_data)
 {
 	struct s2io_nic *nic = ring_data->nic;
 	struct net_device *dev = (struct net_device *) nic->dev;
-	int get_block, put_block, put_offset;
+	int get_block, put_block;
 	struct rx_curr_get_info get_info, put_info;
 	struct RxD_t *rxdp;
 	struct sk_buff *skb;
@@ -2987,19 +2964,11 @@ static void rx_intr_handler(struct ring_info *ring_data)
 	struct RxD1* rxdp1;
 	struct RxD3* rxdp3;
 
-	spin_lock(&nic->rx_lock);
-
 	get_info = ring_data->rx_curr_get_info;
 	get_block = get_info.block_index;
 	memcpy(&put_info, &ring_data->rx_curr_put_info, sizeof(put_info));
 	put_block = put_info.block_index;
 	rxdp = ring_data->rx_blocks[get_block].rxds[get_info.offset].virt_addr;
-	if (!napi) {
-		spin_lock(&nic->put_lock);
-		put_offset = ring_data->put_pos;
-		spin_unlock(&nic->put_lock);
-	} else
-		put_offset = ring_data->put_pos;
 
 	while (RXD_IS_UP2DT(rxdp)) {
 		/*
@@ -3016,7 +2985,6 @@ static void rx_intr_handler(struct ring_info *ring_data)
 			DBG_PRINT(ERR_DBG, "%s: The skb is ",
 				  dev->name);
 			DBG_PRINT(ERR_DBG, "Null in Rx Intr\n");
-			spin_unlock(&nic->rx_lock);
 			return;
 		}
 		if (nic->rxd_mode == RXD_MODE_1) {
@@ -3072,8 +3040,6 @@ static void rx_intr_handler(struct ring_info *ring_data)
 			}
 		}
 	}
-
-	spin_unlock(&nic->rx_lock);
 }
 
 /**
@@ -4105,7 +4071,6 @@ static int s2io_close(struct net_device *dev)
 			do_s2io_delete_unicast_mc(sp, tmp64);
 	}
 
-	/* Reset card, kill tasklet and free Tx and Rx buffers. */
 	s2io_card_down(sp);
 
 	return 0;
@@ -4370,29 +4335,9 @@ s2io_alarm_handle(unsigned long data)
 
 static int s2io_chk_rx_buffers(struct s2io_nic *sp, int rng_n)
 {
-	int rxb_size, level;
-
-	if (!sp->lro) {
-		rxb_size = atomic_read(&sp->rx_bufs_left[rng_n]);
-		level = rx_buffer_level(sp, rxb_size, rng_n);
-
-		if ((level == PANIC) && (!TASKLET_IN_USE)) {
-			int ret;
-			DBG_PRINT(INTR_DBG, "%s: Rx BD hit ", __FUNCTION__);
-			DBG_PRINT(INTR_DBG, "PANIC levels\n");
-			if ((ret = fill_rx_buffers(sp, rng_n)) == -ENOMEM) {
-				DBG_PRINT(INFO_DBG, "Out of memory in %s",
-					  __FUNCTION__);
-				clear_bit(0, (&sp->tasklet_status));
-				return -1;
-			}
-			clear_bit(0, (&sp->tasklet_status));
-		} else if (level == LOW)
-			tasklet_schedule(&sp->task);
-
-	} else if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
-			DBG_PRINT(INFO_DBG, "%s:Out of memory", sp->dev->name);
-			DBG_PRINT(INFO_DBG, " in Rx Intr!!\n");
+	if (fill_rx_buffers(sp, rng_n) == -ENOMEM) {
+		DBG_PRINT(INFO_DBG, "%s:Out of memory", sp->dev->name);
+		DBG_PRINT(INFO_DBG, " in Rx Intr!!\n");
 	}
 	return 0;
 }
@@ -6770,49 +6715,6 @@ static int s2io_change_mtu(struct net_device *dev, int new_mtu)
 }
 
 /**
- *  s2io_tasklet - Bottom half of the ISR.
- *  @dev_adr : address of the device structure in dma_addr_t format.
- *  Description:
- *  This is the tasklet or the bottom half of the ISR. This is
- *  an extension of the ISR which is scheduled by the scheduler to be run
- *  when the load on the CPU is low. All low priority tasks of the ISR can
- *  be pushed into the tasklet. For now the tasklet is used only to
- *  replenish the Rx buffers in the Rx buffer descriptors.
- *  Return value:
- *  void.
- */
-
-static void s2io_tasklet(unsigned long dev_addr)
-{
-	struct net_device *dev = (struct net_device *) dev_addr;
-	struct s2io_nic *sp = dev->priv;
-	int i, ret;
-	struct mac_info *mac_control;
-	struct config_param *config;
-
-	mac_control = &sp->mac_control;
-	config = &sp->config;
-
-	if (!TASKLET_IN_USE) {
-		for (i = 0; i < config->rx_ring_num; i++) {
-			ret = fill_rx_buffers(sp, i);
-			if (ret == -ENOMEM) {
-				DBG_PRINT(INFO_DBG, "%s: Out of ",
-					  dev->name);
-				DBG_PRINT(INFO_DBG, "memory in tasklet\n");
-				break;
-			} else if (ret == -EFILL) {
-				DBG_PRINT(INFO_DBG,
-					  "%s: Rx Ring %d is full\n",
-					  dev->name, i);
-				break;
-			}
-		}
-		clear_bit(0, (&sp->tasklet_status));
-	}
-}
-
-/**
  * s2io_set_link - Set the LInk status
  * @data: long pointer to device private structue
  * Description: Sets the link status for the adapter
@@ -7161,7 +7063,6 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io)
 {
 	int cnt = 0;
 	struct XENA_dev_config __iomem *bar0 = sp->bar0;
-	unsigned long flags;
 	register u64 val64 = 0;
 	struct config_param *config;
 	config = &sp->config;
@@ -7186,9 +7087,6 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io)
 
 	s2io_rem_isr(sp);
 
-	/* Kill tasklet. */
-	tasklet_kill(&sp->task);
-
 	/* Check if the device is Quiescent and then Reset the NIC */
 	while(do_io) {
 		/* As per the HW requirement we need to replenish the
@@ -7223,9 +7121,7 @@ static void do_s2io_card_down(struct s2io_nic * sp, int do_io)
 	free_tx_buffers(sp);
 
 	/* Free all Rx buffers */
-	spin_lock_irqsave(&sp->rx_lock, flags);
 	free_rx_buffers(sp);
-	spin_unlock_irqrestore(&sp->rx_lock, flags);
 
 	clear_bit(__S2IO_STATE_LINK_TASK, &(sp->state));
 }
@@ -7314,9 +7210,6 @@ static int s2io_card_up(struct s2io_nic * sp)
 
 	S2IO_TIMER_CONF(sp->alarm_timer, s2io_alarm_handle, sp, (HZ/2));
 
-	/* Enable tasklet for the device */
-	tasklet_init(&sp->task, s2io_tasklet, (unsigned long) dev);
-
 	/*  Enable select interrupts */
 	en_dis_err_alarms(sp, ENA_ALL_INTRS, ENABLE_INTRS);
 	if (sp->config.intr_type != INTA)
@@ -8119,20 +8012,15 @@ s2io_init_nic(struct pci_dev *pdev, const struct pci_device_id *pre)
 	s2io_reset(sp);
 
 	/*
-	 * Initialize the tasklet status and link state flags
+	 * Initialize link state flags
 	 * and the card state parameter
 	 */
-	sp->tasklet_status = 0;
 	sp->state = 0;
 
 	/* Initialize spinlocks */
 	for (i = 0; i < sp->config.tx_fifo_num; i++)
 		spin_lock_init(&mac_control->fifos[i].tx_lock);
 
-	if (!napi)
-		spin_lock_init(&sp->put_lock);
-	spin_lock_init(&sp->rx_lock);
-
 	/*
 	 * SXE-002: Configure link and activity LED to init state
 	 * on driver load.