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authorSachin Kamat <sachin.kamat@linaro.org>2012-08-21 14:24:09 +0530
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-09-29 15:07:21 +0100
commit6f32a3e2853da194bd541fa107645d71c4eaaef9 (patch)
tree89adaf224c566a6c36895972b628afb2f8984406 /drivers/mtd/nand
parentc83d29f008fbf093b192985b424e19cb16d4b75c (diff)
mtd: s3c2410: Use devm_* functions
devm_* functions are device managed functions and make cleanup code simpler and smaller. devm_kzalloc, devm_clk_get and devm_request_and_ioremap functions are used. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/nand')
-rw-r--r--drivers/mtd/nand/s3c2410.c47
1 files changed, 10 insertions, 37 deletions
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index 8ae9399fb4c8..90a630a6f0b9 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -97,9 +97,8 @@ enum s3c_nand_clk_state {
* @mtds: An array of MTD instances on this controoler.
* @platform: The platform data for this board.
* @device: The platform device we bound to.
- * @area: The IO area resource that came from request_mem_region().
* @clk: The clock resource for this controller.
- * @regs: The area mapped for the hardware registers described by @area.
+ * @regs: The area mapped for the hardware registers.
* @sel_reg: Pointer to the register controlling the NAND selection.
* @sel_bit: The bit in @sel_reg to select the NAND chip.
* @mtd_count: The number of MTDs created from this controller.
@@ -116,7 +115,6 @@ struct s3c2410_nand_info {
/* device info */
struct device *device;
- struct resource *area;
struct clk *clk;
void __iomem *regs;
void __iomem *sel_reg;
@@ -716,29 +714,12 @@ static int s3c24xx_nand_remove(struct platform_device *pdev)
pr_debug("releasing mtd %d (%p)\n", mtdno, ptr);
nand_release(&ptr->mtd);
}
-
- kfree(info->mtds);
}
/* free the common resources */
- if (!IS_ERR(info->clk)) {
+ if (!IS_ERR(info->clk))
s3c2410_nand_clk_set_state(info, CLOCK_DISABLE);
- clk_put(info->clk);
- }
-
- if (info->regs != NULL) {
- iounmap(info->regs);
- info->regs = NULL;
- }
-
- if (info->area != NULL) {
- release_resource(info->area);
- kfree(info->area);
- info->area = NULL;
- }
-
- kfree(info);
return 0;
}
@@ -933,7 +914,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
pr_debug("s3c2410_nand_probe(%p)\n", pdev);
- info = kzalloc(sizeof(*info), GFP_KERNEL);
+ info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
if (info == NULL) {
dev_err(&pdev->dev, "no memory for flash info\n");
err = -ENOMEM;
@@ -947,7 +928,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
/* get the clock source and enable it */
- info->clk = clk_get(&pdev->dev, "nand");
+ info->clk = devm_clk_get(&pdev->dev, "nand");
if (IS_ERR(info->clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
err = -ENOENT;
@@ -959,22 +940,14 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
/* allocate and map the resource */
/* currently we assume we have the one resource */
- res = pdev->resource;
+ res = pdev->resource;
size = resource_size(res);
- info->area = request_mem_region(res->start, size, pdev->name);
-
- if (info->area == NULL) {
- dev_err(&pdev->dev, "cannot reserve register region\n");
- err = -ENOENT;
- goto exit_error;
- }
-
- info->device = &pdev->dev;
- info->platform = plat;
- info->regs = ioremap(res->start, size);
- info->cpu_type = cpu_type;
+ info->device = &pdev->dev;
+ info->platform = plat;
+ info->cpu_type = cpu_type;
+ info->regs = devm_request_and_ioremap(&pdev->dev, res);
if (info->regs == NULL) {
dev_err(&pdev->dev, "cannot reserve register region\n");
err = -EIO;
@@ -997,7 +970,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev)
/* allocate our information */
size = nr_sets * sizeof(*info->mtds);
- info->mtds = kzalloc(size, GFP_KERNEL);
+ info->mtds = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
if (info->mtds == NULL) {
dev_err(&pdev->dev, "failed to allocate mtd storage\n");
err = -ENOMEM;