From 32fced05ad9ef4736e4a89b2361cccf56227529b Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Mon, 14 May 2012 06:31:24 -0300 Subject: [PATCH] [media] s5p-g2d: Use devm_* functions in g2d.c file devm_* functions are device managed functions and make error handling and cleanup simpler. Signed-off-by: Sachin Kamat Signed-off-by: Sylwester Nawrocki Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/s5p-g2d/g2d.c | 47 ++++++++----------------------- drivers/media/video/s5p-g2d/g2d.h | 1 - 2 files changed, 11 insertions(+), 37 deletions(-) diff --git a/drivers/media/video/s5p-g2d/g2d.c b/drivers/media/video/s5p-g2d/g2d.c index 2270b7c1425b..7c98ee7377ee 100644 --- a/drivers/media/video/s5p-g2d/g2d.c +++ b/drivers/media/video/s5p-g2d/g2d.c @@ -674,42 +674,27 @@ static int g2d_probe(struct platform_device *pdev) struct resource *res; int ret = 0; - dev = kzalloc(sizeof(*dev), GFP_KERNEL); + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; + spin_lock_init(&dev->ctrl_lock); mutex_init(&dev->mutex); atomic_set(&dev->num_inst, 0); init_waitqueue_head(&dev->irq_queue); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "failed to find registers\n"); - ret = -ENOENT; - goto free_dev; - } - dev->res_regs = request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev)); - - if (!dev->res_regs) { - dev_err(&pdev->dev, "failed to obtain register region\n"); - ret = -ENOENT; - goto free_dev; - } - - dev->regs = ioremap(res->start, resource_size(res)); - if (!dev->regs) { - dev_err(&pdev->dev, "failed to map registers\n"); - ret = -ENOENT; - goto rel_res_regs; + dev->regs = devm_request_and_ioremap(&pdev->dev, res); + if (dev->regs == NULL) { + dev_err(&pdev->dev, "Failed to obtain io memory\n"); + return -ENOENT; } dev->clk = clk_get(&pdev->dev, "sclk_fimg2d"); if (IS_ERR_OR_NULL(dev->clk)) { dev_err(&pdev->dev, "failed to get g2d clock\n"); - ret = -ENXIO; - goto unmap_regs; + return -ENXIO; } ret = clk_prepare(dev->clk); @@ -740,7 +725,8 @@ static int g2d_probe(struct platform_device *pdev) dev->irq = res->start; - ret = request_irq(dev->irq, g2d_isr, 0, pdev->name, dev); + ret = devm_request_irq(&pdev->dev, dev->irq, g2d_isr, + 0, pdev->name, dev); if (ret) { dev_err(&pdev->dev, "failed to install IRQ\n"); goto put_clk_gate; @@ -749,7 +735,7 @@ static int g2d_probe(struct platform_device *pdev) dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); if (IS_ERR(dev->alloc_ctx)) { ret = PTR_ERR(dev->alloc_ctx); - goto rel_irq; + goto unprep_clk_gate; } ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev); @@ -797,8 +783,6 @@ static int g2d_probe(struct platform_device *pdev) v4l2_device_unregister(&dev->v4l2_dev); alloc_ctx_cleanup: vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); -rel_irq: - free_irq(dev->irq, dev); unprep_clk_gate: clk_unprepare(dev->gate); put_clk_gate: @@ -807,12 +791,7 @@ static int g2d_probe(struct platform_device *pdev) clk_unprepare(dev->clk); put_clk: clk_put(dev->clk); -unmap_regs: - iounmap(dev->regs); -rel_res_regs: - release_resource(dev->res_regs); -free_dev: - kfree(dev); + return ret; } @@ -825,14 +804,10 @@ static int g2d_remove(struct platform_device *pdev) video_unregister_device(dev->vfd); v4l2_device_unregister(&dev->v4l2_dev); vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); - free_irq(dev->irq, dev); clk_unprepare(dev->gate); clk_put(dev->gate); clk_unprepare(dev->clk); clk_put(dev->clk); - iounmap(dev->regs); - release_resource(dev->res_regs); - kfree(dev); return 0; } diff --git a/drivers/media/video/s5p-g2d/g2d.h b/drivers/media/video/s5p-g2d/g2d.h index 1b82065aeaef..6b765b0216c5 100644 --- a/drivers/media/video/s5p-g2d/g2d.h +++ b/drivers/media/video/s5p-g2d/g2d.h @@ -23,7 +23,6 @@ struct g2d_dev { spinlock_t ctrl_lock; atomic_t num_inst; struct vb2_alloc_ctx *alloc_ctx; - struct resource *res_regs; void __iomem *regs; struct clk *clk; struct clk *gate;