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 (file)
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1072,6 +1072,7 @@ static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
        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 @@ static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
        }
 
        /* 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 @@ static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
        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 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
        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 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
        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 @@ static int __devinit of_fsl_dma_probe(struct of_device *dev,
 
        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);

diff --git a/drivers/dma/fsldma.h b/drivers/dma/fsldma.h
index 0df14cb..dbb5b5c 100644 (file)
--- a/drivers/dma/fsldma.h
+++ b/drivers/dma/fsldma.h
@@ -92,8 +92,6 @@ struct fsl_desc_sw {
        struct list_head node;
        struct list_head tx_list;
        struct dma_async_tx_descriptor async_tx;
-       struct list_head *ld;
-       void *priv;
 } __attribute__((aligned(32)));
 
 struct fsl_dma_chan_regs {
@@ -111,7 +109,6 @@ struct fsl_dma_chan;
 
 struct fsl_dma_device {
        void __iomem *reg_base; /* DGSR register base */
-       struct resource reg;    /* Resource for register */
        struct device *dev;
        struct dma_device common;
        struct fsl_dma_chan *chan[FSL_DMA_MAX_CHANS_PER_DEVICE];
@@ -138,7 +135,6 @@ struct fsl_dma_chan {
        struct dma_chan common;         /* DMA common channel */
        struct dma_pool *desc_pool;     /* Descriptors pool */
        struct device *dev;             /* Channel device */
-       struct resource reg;            /* Resource for register */
        int irq;                        /* Channel IRQ */
        int id;                         /* Raw id of this channel */
        struct tasklet_struct tasklet;