mmc: jz4740: Use managed resources
Use managed resources for the mmio memory region and the clock.
Makes the code a bit shorter.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c
index e904e6e..0308c9f 100644
--- a/drivers/mmc/host/jz4740_mmc.c
+++ b/drivers/mmc/host/jz4740_mmc.c
@@ -121,7 +121,6 @@
int irq;
int card_detect_irq;
- struct resource *mem;
void __iomem *base;
struct mmc_request *req;
struct mmc_command *cmd;
@@ -755,6 +754,7 @@
struct mmc_host *mmc;
struct jz4740_mmc_host *host;
struct jz4740_mmc_platform_data *pdata;
+ struct resource *res;
pdata = pdev->dev.platform_data;
@@ -774,39 +774,25 @@
goto err_free_host;
}
- host->clk = clk_get(&pdev->dev, "mmc");
+ host->clk = devm_clk_get(&pdev->dev, "mmc");
if (IS_ERR(host->clk)) {
ret = PTR_ERR(host->clk);
dev_err(&pdev->dev, "Failed to get mmc clock\n");
goto err_free_host;
}
- host->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!host->mem) {
- ret = -ENOENT;
- dev_err(&pdev->dev, "Failed to get base platform memory\n");
- goto err_clk_put;
- }
-
- host->mem = request_mem_region(host->mem->start,
- resource_size(host->mem), pdev->name);
- if (!host->mem) {
- ret = -EBUSY;
- dev_err(&pdev->dev, "Failed to request base memory region\n");
- goto err_clk_put;
- }
-
- host->base = ioremap_nocache(host->mem->start, resource_size(host->mem));
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ host->base = devm_ioremap_resource(&pdev->dev, res);
if (!host->base) {
ret = -EBUSY;
dev_err(&pdev->dev, "Failed to ioremap base memory\n");
- goto err_release_mem_region;
+ goto err_free_host;
}
ret = jz_gpio_bulk_request(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
if (ret) {
dev_err(&pdev->dev, "Failed to request mmc pins: %d\n", ret);
- goto err_iounmap;
+ goto err_free_host;
}
ret = jz4740_mmc_request_gpios(mmc, pdev);
@@ -863,12 +849,6 @@
jz4740_mmc_free_gpios(pdev);
err_gpio_bulk_free:
jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
-err_iounmap:
- iounmap(host->base);
-err_release_mem_region:
- release_mem_region(host->mem->start, resource_size(host->mem));
-err_clk_put:
- clk_put(host->clk);
err_free_host:
mmc_free_host(mmc);
@@ -890,11 +870,6 @@
jz4740_mmc_free_gpios(pdev);
jz_gpio_bulk_free(jz4740_mmc_pins, jz4740_mmc_num_pins(host));
- iounmap(host->base);
- release_mem_region(host->mem->start, resource_size(host->mem));
-
- clk_put(host->clk);
-
mmc_free_host(host->mmc);
return 0;