Let all the code use a pointer called rx_ring to access struct rx_ring
members.
Signed-off-by: ZHAO Gang <gamerh2o@xxxxxxxxx>
---
drivers/staging/et131x/et131x.c | 48 +++++++++++++++++------------------------
1 file changed, 20 insertions(+), 28 deletions(-)
diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 477c9ed..b39abb9 100644
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -811,20 +811,21 @@ static void et131x_rx_dma_enable(struct et131x_adapter *adapter)
{
/* Setup the receive dma configuration register for normal operation */
u32 csr = ET_RXDMA_CSR_FBR1_ENABLE;
+ struct rx_ring *rx_ring = &adapter->rx_ring;
- if (adapter->rx_ring.fbr[1]->buffsize == 4096)
+ if (rx_ring->fbr[1]->buffsize == 4096)
csr |= ET_RXDMA_CSR_FBR1_SIZE_LO;
- else if (adapter->rx_ring.fbr[1]->buffsize == 8192)
+ else if (rx_ring->fbr[1]->buffsize == 8192)
csr |= ET_RXDMA_CSR_FBR1_SIZE_HI;
- else if (adapter->rx_ring.fbr[1]->buffsize == 16384)
+ else if (rx_ring->fbr[1]->buffsize == 16384)
csr |= ET_RXDMA_CSR_FBR1_SIZE_LO | ET_RXDMA_CSR_FBR1_SIZE_HI;
csr |= ET_RXDMA_CSR_FBR0_ENABLE;
- if (adapter->rx_ring.fbr[0]->buffsize == 256)
+ if (rx_ring->fbr[0]->buffsize == 256)
csr |= ET_RXDMA_CSR_FBR0_SIZE_LO;
- else if (adapter->rx_ring.fbr[0]->buffsize == 512)
+ else if (rx_ring->fbr[0]->buffsize == 512)
csr |= ET_RXDMA_CSR_FBR0_SIZE_HI;
- else if (adapter->rx_ring.fbr[0]->buffsize == 1024)
+ else if (rx_ring->fbr[0]->buffsize == 1024)
csr |= ET_RXDMA_CSR_FBR0_SIZE_LO | ET_RXDMA_CSR_FBR0_SIZE_HI;
writel(csr, &adapter->regs->rxdma.csr);
@@ -2126,12 +2127,9 @@ static int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
u32 bufsize;
u32 pktstat_ringsize;
u32 fbr_chunksize;
- struct rx_ring *rx_ring;
+ struct rx_ring *rx_ring = &adapter->rx_ring;
struct fbr_lookup *fbr;
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
-
/* Alloc memory for the lookup table */
rx_ring->fbr[0] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
rx_ring->fbr[1] = kmalloc(sizeof(struct fbr_lookup), GFP_KERNEL);
@@ -2280,12 +2278,9 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
u32 bufsize;
u32 pktstat_ringsize;
struct rfd *rfd;
- struct rx_ring *rx_ring;
+ struct rx_ring *rx_ring = &adapter->rx_ring;
struct fbr_lookup *fbr;
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
-
/* Free RFDs and associated packet descriptors */
WARN_ON(rx_ring->num_ready_recv != rx_ring->num_rfd);
@@ -2334,7 +2329,7 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
/* Free Packet Status Ring */
if (rx_ring->ps_ring_virtaddr) {
pktstat_ringsize = sizeof(struct pkt_stat_desc) *
- adapter->rx_ring.psr_num_entries;
+ rx_ring->psr_num_entries;
dma_free_coherent(&adapter->pdev->dev, pktstat_ringsize,
rx_ring->ps_ring_virtaddr,
@@ -2364,10 +2359,7 @@ static int et131x_init_recv(struct et131x_adapter *adapter)
{
struct rfd *rfd;
u32 rfdct;
- struct rx_ring *rx_ring;
-
- /* Setup some convenience pointers */
- rx_ring = &adapter->rx_ring;
+ struct rx_ring *rx_ring = &adapter->rx_ring;
/* Setup each RFD */
for (rfdct = 0; rfdct < rx_ring->num_rfd; rfdct++) {
@@ -2650,11 +2642,12 @@ static void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
struct rfd *rfd = NULL;
u32 count = 0;
bool done = true;
+ struct rx_ring *rx_ring = &adapter->rx_ring;
/* Process up to available RFD's */
while (count < NUM_PACKETS_HANDLED) {
- if (list_empty(&adapter->rx_ring.recv_list)) {
- WARN_ON(adapter->rx_ring.num_ready_recv != 0);
+ if (list_empty(&rx_ring->recv_list)) {
+ WARN_ON(rx_ring->num_ready_recv != 0);
done = false;
break;
}
@@ -2678,19 +2671,19 @@ static void et131x_handle_recv_interrupt(struct et131x_adapter *adapter)
adapter->net_stats.rx_packets++;
/* Set the status on the packet, either resources or success */
- if (adapter->rx_ring.num_ready_recv < RFD_LOW_WATER_MARK)
+ if (rx_ring->num_ready_recv < RFD_LOW_WATER_MARK)
dev_warn(&adapter->pdev->dev, "RFD's are running out\n");
count++;
}
if (count == NUM_PACKETS_HANDLED || !done) {
- adapter->rx_ring.unfinished_receives = true;
+ rx_ring->unfinished_receives = true;
writel(PARM_TX_TIME_INT_DEF * NANO_IN_A_MICRO,
&adapter->regs->global.watchdog_timer);
} else
/* Watchdog timer will disable itself if appropriate. */
- adapter->rx_ring.unfinished_receives = false;
+ rx_ring->unfinished_receives = false;
}
/* et131x_tx_dma_memory_alloc
@@ -3877,7 +3870,8 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
{
bool handled = true;
struct net_device *netdev = (struct net_device *)dev_id;
- struct et131x_adapter *adapter = NULL;
+ struct et131x_adapter *adapter = netdev_priv(netdev);
+ struct rx_ring *rx_ring = &adapter->rx_ring;
u32 status;
if (!netif_device_present(netdev)) {
@@ -3885,8 +3879,6 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
goto out;
}
- adapter = netdev_priv(netdev);
-
/* If the adapter is in low power state, then it should not
* recognize any interrupt
*/
@@ -3922,7 +3914,7 @@ static irqreturn_t et131x_isr(int irq, void *dev_id)
if (++tcb->stale > 1)
status |= ET_INTR_TXDMA_ISR;
- if (adapter->rx_ring.unfinished_receives)
+ if (rx_ring->unfinished_receives)
status |= ET_INTR_RXDMA_XFR_DONE;
else if (tcb == NULL)
writel(0, &adapter->regs->global.watchdog_timer);
--
1.8.3.1
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