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staging: et131x: Remove alignment offset padding on DMA buffer allocation/free

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This padding was used to align buffers to a 4k boundary when returned
from dma_alloc_coherent(). As the buffers are already 4k aligned, and
the alignment no longer performed, the padding is not needed.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Einon 2012-11-16 10:47:38 +00:00 committed by Greg Kroah-Hartman
parent 15ffde4d36
commit 1a2bd6b257
1 changed files with 2 additions and 4 deletions
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6
drivers/staging/et131x/et131x.c
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@ -2291,8 +2291,7 @@ static int et131x_rx_dma_memory_alloc(struct et131x_adapter *adapter)
for (id = 0; id < NUM_FBRS; id++) {
/* Allocate an area of memory for Free Buffer Ring */
bufsize = (sizeof(struct fbr_desc) *
rx_ring->fbr[id]->num_entries) + 0xfff;
bufsize = (sizeof(struct fbr_desc) * rx_ring->fbr[id]->num_entries);
rx_ring->fbr[id]->ring_virtaddr =
dma_alloc_coherent(&adapter->pdev->dev,
bufsize,
@ -2463,8 +2462,7 @@ static void et131x_rx_dma_memory_free(struct et131x_adapter *adapter)
}
bufsize =
(sizeof(struct fbr_desc) * rx_ring->fbr[id]->num_entries) +
0xfff;
sizeof(struct fbr_desc) * rx_ring->fbr[id]->num_entries;
dma_free_coherent(&adapter->pdev->dev, bufsize,
rx_ring->fbr[id]->ring_virtaddr,