This simplifies error and cleanup code paths.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Acked-by: Josh Wu <josh...@atmel.com>
---
drivers/media/platform/soc_camera/atmel-isi.c | 56 +++++++++------------------
1 file changed, 19 insertions(+), 37 deletions(-)
diff --git a/drivers/media/platform/soc_camera/atmel-isi.c
b/drivers/media/platform/soc_camera/atmel-isi.c
index b46c0ed..faa7f8d 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c
@@ -862,7 +862,6 @@ static int atmel_isi_remove(struct platform_device *pdev)
struct atmel_isi *isi = container_of(soc_host,
struct atmel_isi, soc_host);
- free_irq(isi->irq, isi);
soc_camera_host_unregister(soc_host);
vb2_dma_contig_cleanup_ctx(isi->alloc_ctx);
dma_free_coherent(&pdev->dev,
@@ -870,12 +869,8 @@ static int atmel_isi_remove(struct platform_device *pdev)
isi->p_fb_descriptors,
isi->fb_descriptors_phys);
- iounmap(isi->regs);
clk_unprepare(isi->mck);
- clk_put(isi->mck);
clk_unprepare(isi->pclk);
- clk_put(isi->pclk);
- kfree(isi);
return 0;
}
@@ -884,7 +879,6 @@ static int atmel_isi_probe(struct platform_device *pdev)
{
unsigned int irq;
struct atmel_isi *isi;
- struct clk *pclk;
struct resource *regs;
int ret, i;
struct device *dev = &pdev->dev;
@@ -898,26 +892,20 @@ static int atmel_isi_probe(struct platform_device *pdev)
return -EINVAL;
}
- regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!regs)
- return -ENXIO;
-
- pclk = clk_get(&pdev->dev, "isi_clk");
- if (IS_ERR(pclk))
- return PTR_ERR(pclk);
-
- ret = clk_prepare(pclk);
- if (ret)
- goto err_clk_prepare_pclk;
-
- isi = kzalloc(sizeof(struct atmel_isi), GFP_KERNEL);
+ isi = devm_kzalloc(&pdev->dev, sizeof(struct atmel_isi), GFP_KERNEL);
if (!isi) {
- ret = -ENOMEM;
dev_err(&pdev->dev, "Can't allocate interface!\n");
- goto err_alloc_isi;
+ return -ENOMEM;
}
- isi->pclk = pclk;
+ isi->pclk = devm_clk_get(&pdev->dev, "isi_clk");
+ if (IS_ERR(isi->pclk))
+ return PTR_ERR(isi->pclk);
+
+ ret = clk_prepare(isi->pclk);
+ if (ret)
+ return ret;
+
isi->pdata = pdata;
isi->active = NULL;
spin_lock_init(&isi->lock);
@@ -925,11 +913,11 @@ static int atmel_isi_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&isi->dma_desc_head);
/* Get ISI_MCK, provided by programmable clock or external clock */
- isi->mck = clk_get(dev, "isi_mck");
+ isi->mck = devm_clk_get(dev, "isi_mck");
if (IS_ERR(isi->mck)) {
dev_err(dev, "Failed to get isi_mck\n");
ret = PTR_ERR(isi->mck);
- goto err_clk_get;
+ goto err_clk_get_mck;
}
ret = clk_prepare(isi->mck);
@@ -964,9 +952,10 @@ static int atmel_isi_probe(struct platform_device *pdev)
goto err_alloc_ctx;
}
- isi->regs = ioremap(regs->start, resource_size(regs));
- if (!isi->regs) {
- ret = -ENOMEM;
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ isi->regs = devm_ioremap_resource(&pdev->dev, regs);
+ if (IS_ERR(isi->regs)) {
+ ret = PTR_ERR(isi->regs);
goto err_ioremap;
}
@@ -983,7 +972,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
goto err_req_irq;
}
- ret = request_irq(irq, isi_interrupt, 0, "isi", isi);
+ ret = devm_request_irq(&pdev->dev, irq, isi_interrupt, 0, "isi", isi);
if (ret) {
dev_err(&pdev->dev, "Unable to request irq %d\n", irq);
goto err_req_irq;
@@ -1005,9 +994,7 @@ static int atmel_isi_probe(struct platform_device *pdev)
return 0;
err_register_soc_camera_host:
- free_irq(isi->irq, isi);
err_req_irq:
- iounmap(isi->regs);
err_ioremap:
vb2_dma_contig_cleanup_ctx(isi->alloc_ctx);
err_alloc_ctx:
@@ -1019,13 +1006,8 @@ err_alloc_descriptors:
err_set_mck_rate:
clk_unprepare(isi->mck);
err_clk_prepare_mck:
- clk_put(isi->mck);
-err_clk_get:
- kfree(isi);
-err_alloc_isi:
- clk_unprepare(pclk);
-err_clk_prepare_pclk:
- clk_put(pclk);
+err_clk_get_mck:
+ clk_unprepare(isi->pclk);
return ret;
}
--
1.8.3.2
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