via-velocity: lean and clean velocity_init_rings
- PCI consistent areas need no memset
- use dev_err instead of plain printk
- avoid a few casts
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
diff --git a/drivers/net/via-velocity.c b/drivers/net/via-velocity.c
index fce2dfd..86b256c 100644
--- a/drivers/net/via-velocity.c
+++ b/drivers/net/via-velocity.c
@@ -1102,47 +1102,41 @@
static int velocity_init_rings(struct velocity_info *vptr)
{
- int i;
- unsigned int psize;
+ struct velocity_opt *opt = &vptr->options;
+ const unsigned int rx_ring_size = opt->numrx * sizeof(struct rx_desc);
+ const unsigned int tx_ring_size = opt->numtx * sizeof(struct tx_desc);
+ struct pci_dev *pdev = vptr->pdev;
dma_addr_t pool_dma;
- u8 *pool;
+ void *pool;
+ unsigned int i;
/*
- * Allocate all RD/TD rings a single pool
- */
-
- psize = vptr->options.numrx * sizeof(struct rx_desc) +
- vptr->options.numtx * sizeof(struct tx_desc) * vptr->num_txq;
-
- /*
+ * Allocate all RD/TD rings a single pool.
+ *
* pci_alloc_consistent() fulfills the requirement for 64 bytes
* alignment
*/
- pool = pci_alloc_consistent(vptr->pdev, psize, &pool_dma);
-
- if (pool == NULL) {
- printk(KERN_ERR "%s : DMA memory allocation failed.\n",
- vptr->dev->name);
+ pool = pci_alloc_consistent(pdev, tx_ring_size * vptr->num_txq +
+ rx_ring_size, &pool_dma);
+ if (!pool) {
+ dev_err(&pdev->dev, "%s : DMA memory allocation failed.\n",
+ vptr->dev->name);
return -ENOMEM;
}
- memset(pool, 0, psize);
-
- vptr->rd_ring = (struct rx_desc *) pool;
-
+ vptr->rd_ring = pool;
vptr->rd_pool_dma = pool_dma;
- i = vptr->options.numrx * sizeof(struct rx_desc);
- pool += i;
- pool_dma += i;
- for (i = 0; i < vptr->num_txq; i++) {
- int offset = vptr->options.numtx * sizeof(struct tx_desc);
+ pool += rx_ring_size;
+ pool_dma += rx_ring_size;
+ for (i = 0; i < vptr->num_txq; i++) {
+ vptr->td_rings[i] = pool;
vptr->td_pool_dma[i] = pool_dma;
- vptr->td_rings[i] = (struct tx_desc *) pool;
- pool += offset;
- pool_dma += offset;
+ pool += tx_ring_size;
+ pool_dma += tx_ring_size;
}
+
return 0;
}