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Altera TSE: Correct typecast issue detected by kbuild test robot

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This patch addresses a portable pointer arithmetic issue in the
original submission found by the kbuild test robot.

config: make ARCH=i386 allyesconfig

   altera_sgdma.c: In function 'sgdma_txphysaddr':
>> altera_sgdma.c:393:33: warning: cast from
>> pointer to integer of different size [-Wpointer-to-int-cast]
     dma_addr_t offs = (dma_addr_t)((dma_addr_t)desc -
                                    ^
>> altera_sgdma.c:394:5: warning: cast from
>> pointer to integer of different size [-Wpointer-to-int-cast]
        (dma_addr_t)priv->tx_dma_desc);
        ^
   altera_sgdma.c: In function 'sgdma_rxphysaddr':
>> altera_sgdma.c:403:33: warning: cast from
>> pointer to integer of different size [-Wpointer-to-int-cast]
     dma_addr_t offs = (dma_addr_t)((dma_addr_t)desc -
                                    ^
>> altera_sgdma.c:404:5: warning: cast from
>> pointer to integer of different size [-Wpointer-to-int-cast]
        (dma_addr_t)priv->rx_dma_desc);
        ^

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Vince Bridgers <vbridgers2013@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vince Bridgers 2014-03-20 20:43:16 -05:00 committed by David S. Miller
parent 8adfc3ae45
commit a804ad0e3b
1 changed files with 4 additions and 6 deletions
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10
drivers/net/ethernet/altera/altera_sgdma.c
View file

@ -390,9 +390,8 @@ sgdma_txphysaddr(struct altera_tse_private *priv,
struct sgdma_descrip *desc)
{
dma_addr_t paddr = priv->txdescmem_busaddr;
dma_addr_t offs = (dma_addr_t)((dma_addr_t)desc -
(dma_addr_t)priv->tx_dma_desc);
return paddr + offs;
uintptr_t offs = (uintptr_t)desc - (uintptr_t)priv->tx_dma_desc;
return (dma_addr_t)((uintptr_t)paddr + offs);
}
static dma_addr_t
@ -400,9 +399,8 @@ sgdma_rxphysaddr(struct altera_tse_private *priv,
struct sgdma_descrip *desc)
{
dma_addr_t paddr = priv->rxdescmem_busaddr;
dma_addr_t offs = (dma_addr_t)((dma_addr_t)desc -
(dma_addr_t)priv->rx_dma_desc);
return paddr + offs;
uintptr_t offs = (uintptr_t)desc - (uintptr_t)priv->rx_dma_desc;
return (dma_addr_t)((uintptr_t)paddr + offs);
}
#define list_remove_head(list, entry, type, member) \