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author | Tobias Klauser <tobias.klauser@gmail.com> | 2014-04-28 21:23:01 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2014-04-30 20:12:21 (GMT) |
commit | 1b4448815ee746f878ca4c6b8fffa23441f6d16c (patch) | |
tree | f0208c5a1c25ad413c60ae2d1631bb255664cf0e | |
parent | 014f1b20108dc2c0bb0777d8383654a089c790f8 (diff) | |
download | linux-1b4448815ee746f878ca4c6b8fffa23441f6d16c.tar.xz |
Altera TSE: Fix DMA secriptor length initialization
sgdma_descrip is a function name as well as the name of a struct. In
sgdma_initialize(), we should initialize the descriptor length field
with the actual length of a descriptor not with the size of the
function. In order to prevent such things from happening in the future,
rename the function to sgdma_setup_descrip().
Found by sparse which yields the following warning:
drivers/net/ethernet/altera/altera_sgdma.c:74:30: warning: expression using sizeof on a function
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r-- | drivers/net/ethernet/altera/altera_sgdma.c | 74 |
1 files changed, 37 insertions, 37 deletions
diff --git a/drivers/net/ethernet/altera/altera_sgdma.c b/drivers/net/ethernet/altera/altera_sgdma.c index 4bcdd34..9ce8630 100644 --- a/drivers/net/ethernet/altera/altera_sgdma.c +++ b/drivers/net/ethernet/altera/altera_sgdma.c @@ -20,15 +20,15 @@ #include "altera_sgdmahw.h" #include "altera_sgdma.h" -static void sgdma_descrip(struct sgdma_descrip *desc, - struct sgdma_descrip *ndesc, - dma_addr_t ndesc_phys, - dma_addr_t raddr, - dma_addr_t waddr, - u16 length, - int generate_eop, - int rfixed, - int wfixed); +static void sgdma_setup_descrip(struct sgdma_descrip *desc, + struct sgdma_descrip *ndesc, + dma_addr_t ndesc_phys, + dma_addr_t raddr, + dma_addr_t waddr, + u16 length, + int generate_eop, + int rfixed, + int wfixed); static int sgdma_async_write(struct altera_tse_private *priv, struct sgdma_descrip *desc); @@ -71,7 +71,7 @@ int sgdma_initialize(struct altera_tse_private *priv) SGDMA_CTRLREG_INTEN | SGDMA_CTRLREG_ILASTD; - priv->sgdmadesclen = sizeof(sgdma_descrip); + priv->sgdmadesclen = sizeof(struct sgdma_descrip); INIT_LIST_HEAD(&priv->txlisthd); INIT_LIST_HEAD(&priv->rxlisthd); @@ -195,15 +195,15 @@ int sgdma_tx_buffer(struct altera_tse_private *priv, struct tse_buffer *buffer) if (sgdma_txbusy(priv)) return 0; - sgdma_descrip(cdesc, /* current descriptor */ - ndesc, /* next descriptor */ - sgdma_txphysaddr(priv, ndesc), - buffer->dma_addr, /* address of packet to xmit */ - 0, /* write addr 0 for tx dma */ - buffer->len, /* length of packet */ - SGDMA_CONTROL_EOP, /* Generate EOP */ - 0, /* read fixed */ - SGDMA_CONTROL_WR_FIXED); /* Generate SOP */ + sgdma_setup_descrip(cdesc, /* current descriptor */ + ndesc, /* next descriptor */ + sgdma_txphysaddr(priv, ndesc), + buffer->dma_addr, /* address of packet to xmit */ + 0, /* write addr 0 for tx dma */ + buffer->len, /* length of packet */ + SGDMA_CONTROL_EOP, /* Generate EOP */ + 0, /* read fixed */ + SGDMA_CONTROL_WR_FIXED); /* Generate SOP */ pktstx = sgdma_async_write(priv, cdesc); @@ -309,15 +309,15 @@ u32 sgdma_rx_status(struct altera_tse_private *priv) /* Private functions */ -static void sgdma_descrip(struct sgdma_descrip *desc, - struct sgdma_descrip *ndesc, - dma_addr_t ndesc_phys, - dma_addr_t raddr, - dma_addr_t waddr, - u16 length, - int generate_eop, - int rfixed, - int wfixed) +static void sgdma_setup_descrip(struct sgdma_descrip *desc, + struct sgdma_descrip *ndesc, + dma_addr_t ndesc_phys, + dma_addr_t raddr, + dma_addr_t waddr, + u16 length, + int generate_eop, + int rfixed, + int wfixed) { /* Clear the next descriptor as not owned by hardware */ u32 ctrl = ndesc->control; @@ -367,15 +367,15 @@ static int sgdma_async_read(struct altera_tse_private *priv) return 0; } - sgdma_descrip(cdesc, /* current descriptor */ - ndesc, /* next descriptor */ - sgdma_rxphysaddr(priv, ndesc), - 0, /* read addr 0 for rx dma */ - rxbuffer->dma_addr, /* write addr for rx dma */ - 0, /* read 'til EOP */ - 0, /* EOP: NA for rx dma */ - 0, /* read fixed: NA for rx dma */ - 0); /* SOP: NA for rx DMA */ + sgdma_setup_descrip(cdesc, /* current descriptor */ + ndesc, /* next descriptor */ + sgdma_rxphysaddr(priv, ndesc), + 0, /* read addr 0 for rx dma */ + rxbuffer->dma_addr, /* write addr for rx dma */ + 0, /* read 'til EOP */ + 0, /* EOP: NA for rx dma */ + 0, /* read fixed: NA for rx dma */ + 0); /* SOP: NA for rx DMA */ dma_sync_single_for_device(priv->device, priv->rxdescphys, |