misc: sram: add private struct device and virt_base members

[firefly-linux-kernel-4.4.55.git] / drivers / misc / sram.c

diff --git a/drivers/misc/sram.c b/drivers/misc/sram.c
index dd66d5f72ee9383f040dbc2886d6ddd56a5bd5bc..9ecc7d5ed4f8e7530e6fcf4a2179a1b7839bbc8e 100644 (file)
--- a/drivers/misc/sram.c
+++ b/drivers/misc/sram.c
@@ -35,6 +35,9 @@
 #define SRAM_GRANULARITY       32
 
 struct sram_dev {
+       struct device *dev;
+       void __iomem *virt_base;
+
        struct gen_pool *pool;
        struct clk *clk;
 };
@@ -56,7 +59,6 @@ static int sram_reserve_cmp(void *priv, struct list_head *a,
 
 static int sram_probe(struct platform_device *pdev)
 {
-       void __iomem *virt_base;
        struct sram_dev *sram;
        struct resource *res;
        struct device_node *np = pdev->dev.of_node, *child;
@@ -68,29 +70,31 @@ static int sram_probe(struct platform_device *pdev)
 
        INIT_LIST_HEAD(&reserve_list);
 
+       sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL);
+       if (!sram)
+               return -ENOMEM;
+
+       sram->dev = &pdev->dev;
+
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
        if (!res) {
-               dev_err(&pdev->dev, "found no memory resource\n");
+               dev_err(sram->dev, "found no memory resource\n");
                return -EINVAL;
        }
 
        size = resource_size(res);
 
-       if (!devm_request_mem_region(&pdev->dev,
-                       res->start, size, pdev->name)) {
-               dev_err(&pdev->dev, "could not request region for resource\n");
+       if (!devm_request_mem_region(sram->dev, res->start, size, pdev->name)) {
+               dev_err(sram->dev, "could not request region for resource\n");
                return -EBUSY;
        }
 
-       virt_base = devm_ioremap_wc(&pdev->dev, res->start, size);
-       if (IS_ERR(virt_base))
-               return PTR_ERR(virt_base);
-
-       sram = devm_kzalloc(&pdev->dev, sizeof(*sram), GFP_KERNEL);
-       if (!sram)
-               return -ENOMEM;
+       sram->virt_base = devm_ioremap_wc(sram->dev, res->start, size);
+       if (IS_ERR(sram->virt_base))
+               return PTR_ERR(sram->virt_base);
 
-       sram->pool = devm_gen_pool_create(&pdev->dev, ilog2(SRAM_GRANULARITY), -1);
+       sram->pool = devm_gen_pool_create(sram->dev,
+                                         ilog2(SRAM_GRANULARITY), -1);
        if (!sram->pool)
                return -ENOMEM;
 
@@ -109,7 +113,7 @@ static int sram_probe(struct platform_device *pdev)
 
                ret = of_address_to_resource(child, 0, &child_res);
                if (ret < 0) {
-                       dev_err(&pdev->dev,
+                       dev_err(sram->dev,
                                "could not get address for node %s\n",
                                child->full_name);
                        of_node_put(child);
@@ -117,7 +121,7 @@ static int sram_probe(struct platform_device *pdev)
                }
 
                if (child_res.start < res->start || child_res.end > res->end) {
-                       dev_err(&pdev->dev,
+                       dev_err(sram->dev,
                                "reserved block %s outside the sram area\n",
                                child->full_name);
                        ret = -EINVAL;
@@ -129,9 +133,8 @@ static int sram_probe(struct platform_device *pdev)
                block->size = resource_size(&child_res);
                list_add_tail(&block->list, &reserve_list);
 
-               dev_dbg(&pdev->dev, "found reserved block 0x%x-0x%x\n",
-                       block->start,
-                       block->start + block->size);
+               dev_dbg(sram->dev, "found reserved block 0x%x-0x%x\n",
+                       block->start, block->start + block->size);
 
                block++;
        }
@@ -148,7 +151,7 @@ static int sram_probe(struct platform_device *pdev)
        list_for_each_entry(block, &reserve_list, list) {
                /* can only happen if sections overlap */
                if (block->start < cur_start) {
-                       dev_err(&pdev->dev,
+                       dev_err(sram->dev,
                                "block at 0x%x starts after current offset 0x%lx\n",
                                block->start, cur_start);
                        ret = -EINVAL;
@@ -168,10 +171,11 @@ static int sram_probe(struct platform_device *pdev)
                 */
                cur_size = block->start - cur_start;
 
-               dev_dbg(&pdev->dev, "adding chunk 0x%lx-0x%lx\n",
+               dev_dbg(sram->dev, "adding chunk 0x%lx-0x%lx\n",
                        cur_start, cur_start + cur_size);
+
                ret = gen_pool_add_virt(sram->pool,
-                               (unsigned long)virt_base + cur_start,
+                               (unsigned long)sram->virt_base + cur_start,
                                res->start + cur_start, cur_size, -1);
                if (ret < 0)
                        goto err_chunks;
@@ -182,7 +186,7 @@ static int sram_probe(struct platform_device *pdev)
 
        kfree(rblocks);
 
-       sram->clk = devm_clk_get(&pdev->dev, NULL);
+       sram->clk = devm_clk_get(sram->dev, NULL);
        if (IS_ERR(sram->clk))
                sram->clk = NULL;
        else
@@ -190,8 +194,8 @@ static int sram_probe(struct platform_device *pdev)
 
        platform_set_drvdata(pdev, sram);
 
-       dev_dbg(&pdev->dev, "SRAM pool: %zu KiB @ 0x%p\n",
-               gen_pool_size(sram->pool) / 1024, virt_base);
+       dev_dbg(sram->dev, "SRAM pool: %zu KiB @ 0x%p\n",
+               gen_pool_size(sram->pool) / 1024, sram->virt_base);
 
        return 0;
 
@@ -206,7 +210,7 @@ static int sram_remove(struct platform_device *pdev)
        struct sram_dev *sram = platform_get_drvdata(pdev);
 
        if (gen_pool_avail(sram->pool) < gen_pool_size(sram->pool))
-               dev_err(&pdev->dev, "removed while SRAM allocated\n");
+               dev_err(sram->dev, "removed while SRAM allocated\n");
 
        if (sram->clk)
                clk_disable_unprepare(sram->clk);