[PATCH 2/8] farsync: Fix confusion about DMA address and buffer offset types
From: Ben Hutchings <hidden>
Date: 2013-10-27 21:51:47
Also in:
lkml
Subsystem:
farsync synchronous driver, networking drivers, the rest · Maintainers:
Kevin Curtis, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Use dma_addr_t for DMA address parameters and u32 for shared memory offset parameters. Do not assume that dma_addr_t is the same as unsigned long; it will not be in PAE configurations. Truncate DMA addresses to 32 bits when printing them. This is OK because the DMA mask for this device is 32-bit (per default). Compile-tested only. Signed-off-by: Ben Hutchings <redacted> --- drivers/net/wan/farsync.c | 19 +++++++------------ 1 file changed, 7 insertions(+), 12 deletions(-)
diff --git a/drivers/net/wan/farsync.c b/drivers/net/wan/farsync.c
index 3f0c4f2..4b36676 100644
--- a/drivers/net/wan/farsync.c
+++ b/drivers/net/wan/farsync.c@@ -886,15 +886,13 @@ fst_rx_dma_complete(struct fst_card_info *card, struct fst_port_info *port, * Receive a frame through the DMA */ static inline void -fst_rx_dma(struct fst_card_info *card, dma_addr_t skb, - dma_addr_t mem, int len) +fst_rx_dma(struct fst_card_info *card, dma_addr_t skb, u32 mem, int len) { /* * This routine will setup the DMA and start it */ - dbg(DBG_RX, "In fst_rx_dma %lx %lx %d\n", - (unsigned long) skb, (unsigned long) mem, len); + dbg(DBG_RX, "In fst_rx_dma %x %x %d\n", (u32)skb, mem, len); if (card->dmarx_in_progress) { dbg(DBG_ASS, "In fst_rx_dma while dma in progress\n"); }
@@ -915,20 +913,19 @@ fst_rx_dma(struct fst_card_info *card, dma_addr_t skb, * Send a frame through the DMA */ static inline void -fst_tx_dma(struct fst_card_info *card, unsigned char *skb, - unsigned char *mem, int len) +fst_tx_dma(struct fst_card_info *card, dma_addr_t skb, u32 mem, int len) { /* * This routine will setup the DMA and start it. */ - dbg(DBG_TX, "In fst_tx_dma %p %p %d\n", skb, mem, len); + dbg(DBG_TX, "In fst_tx_dma %x %x %d\n", (u32)skb, mem, len); if (card->dmatx_in_progress) { dbg(DBG_ASS, "In fst_tx_dma while dma in progress\n"); } - outl((unsigned long) skb, card->pci_conf + DMAPADR1); /* Copy from here */ - outl((unsigned long) mem, card->pci_conf + DMALADR1); /* to here */ + outl(skb, card->pci_conf + DMAPADR1); /* Copy from here */ + outl(mem, card->pci_conf + DMALADR1); /* to here */ outl(len, card->pci_conf + DMASIZ1); /* for this length */ outl(0x000000004, card->pci_conf + DMADPR1); /* In this direction */
@@ -1405,9 +1402,7 @@ do_bottom_half_tx(struct fst_card_info *card) card->dma_len_tx = skb->len; card->dma_txpos = port->txpos; fst_tx_dma(card, - (char *) card-> - tx_dma_handle_card, - (char *) + card->tx_dma_handle_card, BUF_OFFSET(txBuffer[pi] [port->txpos][0]), skb->len);
--
Ben Hutchings
If at first you don't succeed, you're doing about average.Attachments
- signature.asc [application/pgp-signature] 828 bytes