diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2014-10-08 16:44:34 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-10-08 16:08:04 -0400 |
| commit | fb5ac0de10ed49f9a18f47ec6d2edf359811ba58 (patch) | |
| tree | 8a95c05fe5d9fb2730c628ada6d953b31479e431 /drivers/net | |
| parent | 9fef84780348bbc01b14c1a0f88440ee67cfddfe (diff) | |
| download | linux-fb5ac0de10ed49f9a18f47ec6d2edf359811ba58.tar.bz2 | |
cxgb4: clean up a type issue
The tx_desc struct holds 8 __be64 values. The original code in
ring_tx_db() took a tx_desc pointer then casted it to an int pointer and
then casted it to a u64 pointer. It was confusing and triggered some
static checker warnings.
I have changed the cxgb_pio_copy() function to only take tx_desc
pointers. This isn't really a loss of flexibility because anything else
was buggy to begin with.
I also removed the casting on the destination pointer since that was
unnecessary and a bit messy.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index e8e90ce3ae15..fab4c84a1da4 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -850,13 +850,14 @@ static void write_sgl(const struct sk_buff *skb, struct sge_txq *q, *end = 0; } -/* This function copies 64 byte coalesced work request to - * memory mapped BAR2 space(user space writes). - * For coalesced WR SGE, fetches data from the FIFO instead of from Host. +/* This function copies a tx_desc struct to memory mapped BAR2 space(user space + * writes). For coalesced WR SGE, fetches data from the FIFO instead of from + * Host. */ -static void cxgb_pio_copy(u64 __iomem *dst, u64 *src) +static void cxgb_pio_copy(u64 __iomem *dst, struct tx_desc *desc) { - int count = 8; + int count = sizeof(*desc) / sizeof(u64); + u64 *src = (u64 *)desc; while (count) { writeq(*src, dst); @@ -914,12 +915,9 @@ static inline void ring_tx_db(struct adapter *adap, struct sge_txq *q, int n) int index = (q->pidx ? (q->pidx - 1) : (q->size - 1)); - unsigned int *wr = (unsigned int *)&q->desc[index]; - cxgb_pio_copy((u64 __iomem *) - (adap->bar2 + q->udb + - SGE_UDB_WCDOORBELL), - (u64 *)wr); + cxgb_pio_copy(adap->bar2 + q->udb + SGE_UDB_WCDOORBELL, + q->desc + index); } else { writel(val, adap->bar2 + q->udb + SGE_UDB_KDOORBELL); } |