devm_* APIs are device managed and make exit and cleanup code simpler. While at it also remove some unused labels and fix an error path. Signed-off-by: Sachin Kamat <sachin.kamat@xxxxxxxxxx> --- Compile tested using the latest linux-next tree. This patch should be applied on top of the following patch: http://www.spinics.net/lists/linux-fbdev/msg09303.html --- drivers/video/exynos/exynos_mipi_dsi.c | 68 ++++++++------------------------ include/video/exynos_mipi_dsim.h | 1 - 2 files changed, 17 insertions(+), 52 deletions(-) diff --git a/drivers/video/exynos/exynos_mipi_dsi.c b/drivers/video/exynos/exynos_mipi_dsi.c index f623dfc..fac7df6 100644 --- a/drivers/video/exynos/exynos_mipi_dsi.c +++ b/drivers/video/exynos/exynos_mipi_dsi.c @@ -338,7 +338,8 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev) struct mipi_dsim_ddi *dsim_ddi; int ret = -EINVAL; - dsim = kzalloc(sizeof(struct mipi_dsim_device), GFP_KERNEL); + dsim = devm_kzalloc(&pdev->dev, sizeof(struct mipi_dsim_device), + GFP_KERNEL); if (!dsim) { dev_err(&pdev->dev, "failed to allocate dsim object.\n"); return -ENOMEM; @@ -352,13 +353,13 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev) dsim_pd = (struct mipi_dsim_platform_data *)dsim->pd; if (dsim_pd == NULL) { dev_err(&pdev->dev, "failed to get platform data for dsim.\n"); - goto err_clock_get; + return -EINVAL; } /* get mipi_dsim_config. */ dsim_config = dsim_pd->dsim_config; if (dsim_config == NULL) { dev_err(&pdev->dev, "failed to get dsim config data.\n"); - goto err_clock_get; + return -EINVAL; } dsim->dsim_config = dsim_config; @@ -366,41 +367,28 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev) mutex_init(&dsim->lock); - ret = regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies), supplies); + ret = devm_regulator_bulk_get(&pdev->dev, ARRAY_SIZE(supplies), + supplies); if (ret) { dev_err(&pdev->dev, "Failed to get regulators: %d\n", ret); - goto err_clock_get; + return ret; } - dsim->clock = clk_get(&pdev->dev, "dsim0"); + dsim->clock = devm_clk_get(&pdev->dev, "dsim0"); if (IS_ERR(dsim->clock)) { dev_err(&pdev->dev, "failed to get dsim clock source\n"); - ret = -ENODEV; - goto err_clock_get; + return -ENODEV; } clk_enable(dsim->clock); res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "failed to get io memory region\n"); - ret = -ENODEV; - goto err_platform_get; - } - - dsim->res = request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev)); - if (!dsim->res) { - dev_err(&pdev->dev, "failed to request io memory region\n"); - ret = -ENOMEM; - goto err_mem_region; - } - dsim->reg_base = ioremap(res->start, resource_size(res)); + dsim->reg_base = devm_request_and_ioremap(&pdev->dev, res); if (!dsim->reg_base) { dev_err(&pdev->dev, "failed to remap io region\n"); ret = -ENOMEM; - goto err_ioremap; + goto error; } mutex_init(&dsim->lock); @@ -410,26 +398,27 @@ static int exynos_mipi_dsi_probe(struct platform_device *pdev) if (!dsim_ddi) { dev_err(&pdev->dev, "mipi_dsim_ddi object not found.\n"); ret = -EINVAL; - goto err_bind; + goto error; } dsim->irq = platform_get_irq(pdev, 0); if (IS_ERR_VALUE(dsim->irq)) { dev_err(&pdev->dev, "failed to request dsim irq resource\n"); ret = -EINVAL; - goto err_platform_get_irq; + goto error; } init_completion(&dsim_wr_comp); init_completion(&dsim_rd_comp); platform_set_drvdata(pdev, dsim); - ret = request_irq(dsim->irq, exynos_mipi_dsi_interrupt_handler, + ret = devm_request_irq(&pdev->dev, dsim->irq, + exynos_mipi_dsi_interrupt_handler, IRQF_SHARED, dev_name(&pdev->dev), dsim); if (ret != 0) { dev_err(&pdev->dev, "failed to request dsim irq\n"); ret = -EINVAL; - goto err_bind; + goto error; } /* enable interrupts */ @@ -471,22 +460,8 @@ done: return 0; -err_bind: - iounmap(dsim->reg_base); - -err_ioremap: - release_mem_region(dsim->res->start, resource_size(dsim->res)); - -err_mem_region: - release_resource(dsim->res); - -err_platform_get: +error: clk_disable(dsim->clock); - clk_put(dsim->clock); -err_clock_get: - kfree(dsim); - -err_platform_get_irq: return ret; } @@ -496,13 +471,7 @@ static int exynos_mipi_dsi_remove(struct platform_device *pdev) struct mipi_dsim_ddi *dsim_ddi, *next; struct mipi_dsim_lcd_driver *dsim_lcd_drv; - iounmap(dsim->reg_base); - clk_disable(dsim->clock); - clk_put(dsim->clock); - - release_resource(dsim->res); - release_mem_region(dsim->res->start, resource_size(dsim->res)); list_for_each_entry_safe(dsim_ddi, next, &dsim_ddi_list, list) { if (dsim_ddi) { @@ -518,9 +487,6 @@ static int exynos_mipi_dsi_remove(struct platform_device *pdev) } } - regulator_bulk_free(ARRAY_SIZE(supplies), supplies); - kfree(dsim); - return 0; } diff --git a/include/video/exynos_mipi_dsim.h b/include/video/exynos_mipi_dsim.h index 83ce5e6..89dc88a 100644 --- a/include/video/exynos_mipi_dsim.h +++ b/include/video/exynos_mipi_dsim.h @@ -220,7 +220,6 @@ struct mipi_dsim_config { struct mipi_dsim_device { struct device *dev; int id; - struct resource *res; struct clk *clock; unsigned int irq; void __iomem *reg_base; -- 1.7.4.1 -- To unsubscribe from this list: send the line "unsubscribe linux-fbdev" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
