devm_* functions are device managed functions and make error handling
and cleanup simpler.
Signed-off-by: Sachin Kamat <sachin.kamat@xxxxxxxxxx>
---
drivers/media/video/s5p-mfc/s5p_mfc.c | 63 ++++++--------------------
drivers/media/video/s5p-mfc/s5p_mfc_common.h | 2 -
2 files changed, 14 insertions(+), 51 deletions(-)
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc.c b/drivers/media/video/s5p-mfc/s5p_mfc.c
index 83fe461..3302d45 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc.c
+++ b/drivers/media/video/s5p-mfc/s5p_mfc.c
@@ -948,7 +948,7 @@ static int s5p_mfc_probe(struct platform_device *pdev)
int ret;
pr_debug("%s++\n", __func__);
- dev = kzalloc(sizeof *dev, GFP_KERNEL);
+ dev = devm_kzalloc(&pdev->dev, sizeof *dev, GFP_KERNEL);
if (!dev) {
dev_err(&pdev->dev, "Not enough memory for MFC device\n");
return -ENOMEM;
@@ -959,49 +959,35 @@ static int s5p_mfc_probe(struct platform_device *pdev)
dev->plat_dev = pdev;
if (!dev->plat_dev) {
dev_err(&pdev->dev, "No platform data specified\n");
- ret = -ENODEV;
- goto err_dev;
+ return -ENODEV;
}
ret = s5p_mfc_init_pm(dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed to get mfc clock source\n");
- goto err_clk;
+ return ret;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to get memory region resource\n");
- ret = -ENOENT;
- goto err_res;
- }
- dev->mfc_mem = request_mem_region(res->start, resource_size(res),
- pdev->name);
- if (dev->mfc_mem == NULL) {
- dev_err(&pdev->dev, "failed to get memory region\n");
- ret = -ENOENT;
- goto err_mem_reg;
- }
- dev->regs_base = ioremap(dev->mfc_mem->start, resource_size(dev->mfc_mem));
+ dev->regs_base = devm_request_and_ioremap(&pdev->dev, res);
if (dev->regs_base == NULL) {
- dev_err(&pdev->dev, "failed to ioremap address region\n");
- ret = -ENOENT;
- goto err_ioremap;
+ dev_err(&pdev->dev, "Failed to obtain io memory\n");
+ return -ENOENT;
}
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (res == NULL) {
dev_err(&pdev->dev, "failed to get irq resource\n");
ret = -ENOENT;
- goto err_get_res;
+ goto err_res;
}
dev->irq = res->start;
- ret = request_irq(dev->irq, s5p_mfc_irq, IRQF_DISABLED, pdev->name,
- dev);
+ ret = devm_request_irq(&pdev->dev, dev->irq, s5p_mfc_irq,
+ IRQF_DISABLED, pdev->name, dev);
if (ret) {
dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret);
- goto err_req_irq;
+ goto err_res;
}
dev->mem_dev_l = device_find_child(&dev->plat_dev->dev, "s5p-mfc-l",
@@ -1009,20 +995,20 @@ static int s5p_mfc_probe(struct platform_device *pdev)
if (!dev->mem_dev_l) {
mfc_err("Mem child (L) device get failed\n");
ret = -ENODEV;
- goto err_find_child;
+ goto err_res;
}
dev->mem_dev_r = device_find_child(&dev->plat_dev->dev, "s5p-mfc-r",
match_child);
if (!dev->mem_dev_r) {
mfc_err("Mem child (R) device get failed\n");
ret = -ENODEV;
- goto err_find_child;
+ goto err_res;
}
dev->alloc_ctx[0] = vb2_dma_contig_init_ctx(dev->mem_dev_l);
if (IS_ERR_OR_NULL(dev->alloc_ctx[0])) {
ret = PTR_ERR(dev->alloc_ctx[0]);
- goto err_mem_init_ctx_0;
+ goto err_res;
}
dev->alloc_ctx[1] = vb2_dma_contig_init_ctx(dev->mem_dev_r);
if (IS_ERR_OR_NULL(dev->alloc_ctx[1])) {
@@ -1110,22 +1096,9 @@ err_v4l2_dev_reg:
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
err_mem_init_ctx_1:
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
-err_mem_init_ctx_0:
-err_find_child:
- free_irq(dev->irq, dev);
-err_req_irq:
-err_get_res:
- iounmap(dev->regs_base);
- dev->regs_base = NULL;
-err_ioremap:
- release_resource(dev->mfc_mem);
- kfree(dev->mfc_mem);
-err_mem_reg:
err_res:
s5p_mfc_final_pm(dev);
-err_clk:
-err_dev:
- kfree(dev);
+
pr_debug("%s-- with error\n", __func__);
return ret;
@@ -1148,15 +1121,7 @@ static int __devexit s5p_mfc_remove(struct platform_device *pdev)
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[0]);
vb2_dma_contig_cleanup_ctx(dev->alloc_ctx[1]);
- free_irq(dev->irq, dev);
- iounmap(dev->regs_base);
- if (dev->mfc_mem) {
- release_resource(dev->mfc_mem);
- kfree(dev->mfc_mem);
- dev->mfc_mem = NULL;
- }
s5p_mfc_final_pm(dev);
- kfree(dev);
return 0;
}
diff --git a/drivers/media/video/s5p-mfc/s5p_mfc_common.h b/drivers/media/video/s5p-mfc/s5p_mfc_common.h
index 91146fa..bd5706a 100644
--- a/drivers/media/video/s5p-mfc/s5p_mfc_common.h
+++ b/drivers/media/video/s5p-mfc/s5p_mfc_common.h
@@ -185,7 +185,6 @@ struct s5p_mfc_pm {
* @mem_dev_r: child device of the right memory bank (1)
* @regs_base: base address of the MFC hw registers
* @irq: irq resource
- * @mfc_mem: MFC registers memory resource
* @dec_ctrl_handler: control framework handler for decoding
* @enc_ctrl_handler: control framework handler for encoding
* @pm: power management control
@@ -221,7 +220,6 @@ struct s5p_mfc_dev {
struct device *mem_dev_r;
void __iomem *regs_base;
int irq;
- struct resource *mfc_mem;
struct v4l2_ctrl_handler dec_ctrl_handler;
struct v4l2_ctrl_handler enc_ctrl_handler;
struct s5p_mfc_pm pm;
--
1.7.4.1
--
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