fsldma: remove unused structure members
Remove some unused members from the fsldma data structures. A few trivial
uses of struct resource were converted to use the stack rather than keeping
the memory allocated for the lifetime of the driver.
Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 0bad741..0b4e638 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1072,6 +1072,7 @@
struct device_node *node, u32 feature, const char *compatible)
{
struct fsl_dma_chan *new_fsl_chan;
+ struct resource res;
int err;
/* alloc channel */
@@ -1083,7 +1084,7 @@
}
/* get dma channel register base */
- err = of_address_to_resource(node, 0, &new_fsl_chan->reg);
+ err = of_address_to_resource(node, 0, &res);
if (err) {
dev_err(fdev->dev, "Can't get %s property 'reg'\n",
node->full_name);
@@ -1101,10 +1102,8 @@
WARN_ON(fdev->feature != new_fsl_chan->feature);
new_fsl_chan->dev = fdev->dev;
- new_fsl_chan->reg_base = ioremap(new_fsl_chan->reg.start,
- new_fsl_chan->reg.end - new_fsl_chan->reg.start + 1);
-
- new_fsl_chan->id = ((new_fsl_chan->reg.start - 0x100) & 0xfff) >> 7;
+ new_fsl_chan->reg_base = ioremap(res.start, resource_size(&res));
+ new_fsl_chan->id = ((res.start - 0x100) & 0xfff) >> 7;
if (new_fsl_chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) {
dev_err(fdev->dev, "There is no %d channel!\n",
new_fsl_chan->id);
@@ -1183,6 +1182,7 @@
int err;
struct fsl_dma_device *fdev;
struct device_node *child;
+ struct resource res;
fdev = kzalloc(sizeof(struct fsl_dma_device), GFP_KERNEL);
if (!fdev) {
@@ -1193,7 +1193,7 @@
INIT_LIST_HEAD(&fdev->common.channels);
/* get DMA controller register base */
- err = of_address_to_resource(dev->node, 0, &fdev->reg);
+ err = of_address_to_resource(dev->node, 0, &res);
if (err) {
dev_err(&dev->dev, "Can't get %s property 'reg'\n",
dev->node->full_name);
@@ -1202,9 +1202,8 @@
dev_info(&dev->dev, "Probe the Freescale DMA driver for %s "
"controller at 0x%llx...\n",
- match->compatible, (unsigned long long)fdev->reg.start);
- fdev->reg_base = ioremap(fdev->reg.start, fdev->reg.end
- - fdev->reg.start + 1);
+ match->compatible, (unsigned long long)res.start);
+ fdev->reg_base = ioremap(res.start, resource_size(&res));
dma_cap_set(DMA_MEMCPY, fdev->common.cap_mask);
dma_cap_set(DMA_INTERRUPT, fdev->common.cap_mask);