diff options
Diffstat (limited to 'samples/kfifo')
| -rw-r--r-- | samples/kfifo/bytestream-example.c | 1 | ||||
| -rw-r--r-- | samples/kfifo/dma-example.c | 17 | ||||
| -rw-r--r-- | samples/kfifo/inttype-example.c | 1 | ||||
| -rw-r--r-- | samples/kfifo/record-example.c | 1 |
4 files changed, 12 insertions, 8 deletions
diff --git a/samples/kfifo/bytestream-example.c b/samples/kfifo/bytestream-example.c index 178061e87ff..cfe40addda7 100644 --- a/samples/kfifo/bytestream-example.c +++ b/samples/kfifo/bytestream-example.c @@ -148,6 +148,7 @@ static const struct file_operations fifo_fops = { .owner = THIS_MODULE, .read = fifo_read, .write = fifo_write, + .llseek = noop_llseek, }; static int __init example_init(void) diff --git a/samples/kfifo/dma-example.c b/samples/kfifo/dma-example.c index ee03a4f0b64..06473791c08 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", diff --git a/samples/kfifo/inttype-example.c b/samples/kfifo/inttype-example.c index 71b2aabca96..6f8e79e76c9 100644 --- a/samples/kfifo/inttype-example.c +++ b/samples/kfifo/inttype-example.c @@ -141,6 +141,7 @@ static const struct file_operations fifo_fops = { .owner = THIS_MODULE, .read = fifo_read, .write = fifo_write, + .llseek = noop_llseek, }; static int __init example_init(void) diff --git a/samples/kfifo/record-example.c b/samples/kfifo/record-example.c index e68bd16a5da..2d7529eeb29 100644 --- a/samples/kfifo/record-example.c +++ b/samples/kfifo/record-example.c @@ -155,6 +155,7 @@ static const struct file_operations fifo_fops = { .owner = THIS_MODULE, .read = fifo_read, .write = fifo_write, + .llseek = noop_llseek, }; static int __init example_init(void) |