X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=kernel%2Fdma.c;h=937b13ca33baaac6a3ab01437b4016f9995a11f9;hb=97bf2856c6014879bd04983a3e9dfcdac1e7fe85;hp=aef0a45b7893db2c7a5a2c94f67da7618e181bc9;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/kernel/dma.c b/kernel/dma.c
index aef0a45b7..937b13ca3 100644
--- a/kernel/dma.c
+++ b/kernel/dma.c
@@ -62,6 +62,11 @@ static struct dma_chan dma_chan_busy[MAX_DMA_CHANNELS] = {
 };
 
 
+/**
+ * request_dma - request and reserve a system DMA channel
+ * @dmanr: DMA channel number
+ * @device_id: reserving device ID string, used in /proc/dma
+ */
 int request_dma(unsigned int dmanr, const char * device_id)
 {
 	if (dmanr >= MAX_DMA_CHANNELS)
@@ -76,7 +81,10 @@ int request_dma(unsigned int dmanr, const char * device_id)
 	return 0;
 } /* request_dma */
 
-
+/**
+ * free_dma - free a reserved system DMA channel
+ * @dmanr: DMA channel number
+ */
 void free_dma(unsigned int dmanr)
 {
 	if (dmanr >= MAX_DMA_CHANNELS) {
@@ -132,7 +140,7 @@ static int proc_dma_open(struct inode *inode, struct file *file)
 	return single_open(file, proc_dma_show, NULL);
 }
 
-static struct file_operations proc_dma_operations = {
+static const struct file_operations proc_dma_operations = {
 	.open		= proc_dma_open,
 	.read		= seq_read,
 	.llseek		= seq_lseek,