diff options
| author | Tushar Dave <tushar.n.dave@oracle.com> | 2016-10-17 13:56:59 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-18 11:18:26 -0800 |
| commit | 266439c94df9e6aee3390c6e1cfdb645e566f704 (patch) | |
| tree | 207c05713b540bd9a4d03a02b6c101309abb1c0c /drivers/net/ethernet/sun | |
| parent | 49cc0c43d0d60ba8ca1cd754921bb50119d42940 (diff) | |
| download | lwn-266439c94df9e6aee3390c6e1cfdb645e566f704.tar.gz lwn-266439c94df9e6aee3390c6e1cfdb645e566f704.zip | |
sunqe: Fix compiler warnings
sunqe uses '__u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enables 64bit
DMA and therefore dma_addr_t becomes of type u64. This makes
'incompatible pointer type' warnings inevitable.
e.g.
drivers/net/ethernet/sun/sunqe.c: In function ‘qec_ether_init’:
drivers/net/ethernet/sun/sunqe.c:883: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’
drivers/net/ethernet/sun/sunqe.c:885: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’
This patch resolves above compiler warnings.
Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/sun')
| -rw-r--r-- | drivers/net/ethernet/sun/sunqe.c | 11 | ||||
| -rw-r--r-- | drivers/net/ethernet/sun/sunqe.h | 4 |
2 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/ethernet/sun/sunqe.c b/drivers/net/ethernet/sun/sunqe.c index 9b825780b3be..9582948145c1 100644 --- a/drivers/net/ethernet/sun/sunqe.c +++ b/drivers/net/ethernet/sun/sunqe.c @@ -124,7 +124,7 @@ static void qe_init_rings(struct sunqe *qep) { struct qe_init_block *qb = qep->qe_block; struct sunqe_buffers *qbufs = qep->buffers; - __u32 qbufs_dvma = qep->buffers_dvma; + __u32 qbufs_dvma = (__u32)qep->buffers_dvma; int i; qep->rx_new = qep->rx_old = qep->tx_new = qep->tx_old = 0; @@ -144,6 +144,7 @@ static int qe_init(struct sunqe *qep, int from_irq) void __iomem *mregs = qep->mregs; void __iomem *gregs = qecp->gregs; unsigned char *e = &qep->dev->dev_addr[0]; + __u32 qblk_dvma = (__u32)qep->qblock_dvma; u32 tmp; int i; @@ -152,8 +153,8 @@ static int qe_init(struct sunqe *qep, int from_irq) return -EAGAIN; /* Setup initial rx/tx init block pointers. */ - sbus_writel(qep->qblock_dvma + qib_offset(qe_rxd, 0), cregs + CREG_RXDS); - sbus_writel(qep->qblock_dvma + qib_offset(qe_txd, 0), cregs + CREG_TXDS); + sbus_writel(qblk_dvma + qib_offset(qe_rxd, 0), cregs + CREG_RXDS); + sbus_writel(qblk_dvma + qib_offset(qe_txd, 0), cregs + CREG_TXDS); /* Enable/mask the various irq's. */ sbus_writel(0, cregs + CREG_RIMASK); @@ -413,7 +414,7 @@ static void qe_rx(struct sunqe *qep) struct net_device *dev = qep->dev; struct qe_rxd *this; struct sunqe_buffers *qbufs = qep->buffers; - __u32 qbufs_dvma = qep->buffers_dvma; + __u32 qbufs_dvma = (__u32)qep->buffers_dvma; int elem = qep->rx_new; u32 flags; @@ -572,7 +573,7 @@ static int qe_start_xmit(struct sk_buff *skb, struct net_device *dev) { struct sunqe *qep = netdev_priv(dev); struct sunqe_buffers *qbufs = qep->buffers; - __u32 txbuf_dvma, qbufs_dvma = qep->buffers_dvma; + __u32 txbuf_dvma, qbufs_dvma = (__u32)qep->buffers_dvma; unsigned char *txbuf; int len, entry; diff --git a/drivers/net/ethernet/sun/sunqe.h b/drivers/net/ethernet/sun/sunqe.h index 581781b6b2fa..ae190b77431b 100644 --- a/drivers/net/ethernet/sun/sunqe.h +++ b/drivers/net/ethernet/sun/sunqe.h @@ -334,12 +334,12 @@ struct sunqe { void __iomem *qcregs; /* QEC per-channel Registers */ void __iomem *mregs; /* Per-channel MACE Registers */ struct qe_init_block *qe_block; /* RX and TX descriptors */ - __u32 qblock_dvma; /* RX and TX descriptors */ + dma_addr_t qblock_dvma; /* RX and TX descriptors */ spinlock_t lock; /* Protects txfull state */ int rx_new, rx_old; /* RX ring extents */ int tx_new, tx_old; /* TX ring extents */ struct sunqe_buffers *buffers; /* CPU visible address. */ - __u32 buffers_dvma; /* DVMA visible address. */ + dma_addr_t buffers_dvma; /* DVMA visible address. */ struct sunqec *parent; u8 mconfig; /* Base MACE mconfig value */ struct platform_device *op; /* QE's OF device struct */ |