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| author | Ingo Molnar <mingo@elte.hu> | 2010-10-08 10:46:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-10-08 10:46:27 +0200 |
| commit | 7cd2541cf2395962daf98ec32a141aba3398a9b2 (patch) | |
| tree | 3c8bebb277462ba0de9d44233a970d34056dc45e /samples/kfifo | |
| parent | c62f981f9309486ba5546edbb5925f71e441fa65 (diff) | |
| parent | cb655d0f3d57c23db51b981648e452988c0223f9 (diff) | |
| download | blackbird-op-linux-7cd2541cf2395962daf98ec32a141aba3398a9b2.tar.gz blackbird-op-linux-7cd2541cf2395962daf98ec32a141aba3398a9b2.zip | |
Merge commit 'v2.6.36-rc7' into perf/core
Conflicts:
arch/x86/kernel/module.c
Merge reason: Resolve the conflict, pick up fixes.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'samples/kfifo')
| -rw-r--r-- | samples/kfifo/dma-example.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/samples/kfifo/dma-example.c b/samples/kfifo/dma-example.c index ee03a4f0b64f..06473791c08a 100644 --- a/samples/kfifo/dma-example.c +++ b/samples/kfifo/dma-example.c @@ -24,6 +24,7 @@ static int __init example_init(void) { int i; unsigned int ret; + unsigned int nents; struct scatterlist sg[10]; printk(KERN_INFO "DMA fifo test start\n"); @@ -61,9 +62,9 @@ static int __init example_init(void) * byte at the beginning, after the kfifo_skip(). */ sg_init_table(sg, ARRAY_SIZE(sg)); - ret = kfifo_dma_in_prepare(&fifo, sg, ARRAY_SIZE(sg), FIFO_SIZE); - printk(KERN_INFO "DMA sgl entries: %d\n", ret); - if (!ret) { + nents = kfifo_dma_in_prepare(&fifo, sg, ARRAY_SIZE(sg), FIFO_SIZE); + printk(KERN_INFO "DMA sgl entries: %d\n", nents); + if (!nents) { /* fifo is full and no sgl was created */ printk(KERN_WARNING "error kfifo_dma_in_prepare\n"); return -EIO; @@ -71,7 +72,7 @@ static int __init example_init(void) /* receive data */ printk(KERN_INFO "scatterlist for receive:\n"); - for (i = 0; i < ARRAY_SIZE(sg); i++) { + for (i = 0; i < nents; i++) { printk(KERN_INFO "sg[%d] -> " "page_link 0x%.8lx offset 0x%.8x length 0x%.8x\n", @@ -91,16 +92,16 @@ static int __init example_init(void) kfifo_dma_in_finish(&fifo, ret); /* Prepare to transmit data, example: 8 bytes */ - ret = kfifo_dma_out_prepare(&fifo, sg, ARRAY_SIZE(sg), 8); - printk(KERN_INFO "DMA sgl entries: %d\n", ret); - if (!ret) { + nents = kfifo_dma_out_prepare(&fifo, sg, ARRAY_SIZE(sg), 8); + printk(KERN_INFO "DMA sgl entries: %d\n", nents); + if (!nents) { /* no data was available and no sgl was created */ printk(KERN_WARNING "error kfifo_dma_out_prepare\n"); return -EIO; } printk(KERN_INFO "scatterlist for transmit:\n"); - for (i = 0; i < ARRAY_SIZE(sg); i++) { + for (i = 0; i < nents; i++) { printk(KERN_INFO "sg[%d] -> " "page_link 0x%.8lx offset 0x%.8x length 0x%.8x\n", |
