This eliminates the need for explicit clk_put and makes the cleanup and exit path code simpler.

Cc: Eunchul Kim chulspro.kim@samsung.com Signed-off-by: Sachin Kamat sachin.kamat@linaro.org --- drivers/gpu/drm/exynos/exynos_drm_fimc.c | 45 ++++++------------------------ 1 files changed, 9 insertions(+), 36 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_fimc.c b/drivers/gpu/drm/exynos/exynos_drm_fimc.c index ef3a838..c52197b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_fimc.c +++ b/drivers/gpu/drm/exynos/exynos_drm_fimc.c @@ -1739,64 +1739,49 @@ static int fimc_probe(struct platform_device *pdev) platform_get_device_id(pdev)->driver_data;

/* clock control */ - ctx->sclk_fimc_clk = clk_get(dev, "sclk_fimc"); + ctx->sclk_fimc_clk = devm_clk_get(dev, "sclk_fimc"); if (IS_ERR(ctx->sclk_fimc_clk)) { dev_err(dev, "failed to get src fimc clock.\n"); return PTR_ERR(ctx->sclk_fimc_clk); } clk_enable(ctx->sclk_fimc_clk);

- ctx->fimc_clk = clk_get(dev, "fimc"); + ctx->fimc_clk = devm_clk_get(dev, "fimc"); if (IS_ERR(ctx->fimc_clk)) { dev_err(dev, "failed to get fimc clock.\n"); clk_disable(ctx->sclk_fimc_clk); - clk_put(ctx->sclk_fimc_clk); return PTR_ERR(ctx->fimc_clk); }

- ctx->wb_clk = clk_get(dev, "pxl_async0"); + ctx->wb_clk = devm_clk_get(dev, "pxl_async0"); if (IS_ERR(ctx->wb_clk)) { dev_err(dev, "failed to get writeback a clock.\n"); clk_disable(ctx->sclk_fimc_clk); - clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); return PTR_ERR(ctx->wb_clk); }

- ctx->wb_b_clk = clk_get(dev, "pxl_async1"); + ctx->wb_b_clk = devm_clk_get(dev, "pxl_async1"); if (IS_ERR(ctx->wb_b_clk)) { dev_err(dev, "failed to get writeback b clock.\n"); clk_disable(ctx->sclk_fimc_clk); - clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); - clk_put(ctx->wb_clk); return PTR_ERR(ctx->wb_b_clk); }

- parent_clk = clk_get(dev, ddata->parent_clk); + parent_clk = devm_clk_get(dev, ddata->parent_clk);

if (IS_ERR(parent_clk)) { dev_err(dev, "failed to get parent clock.\n"); clk_disable(ctx->sclk_fimc_clk); - clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); - clk_put(ctx->wb_clk); - clk_put(ctx->wb_b_clk); return PTR_ERR(parent_clk); }

if (clk_set_parent(ctx->sclk_fimc_clk, parent_clk)) { dev_err(dev, "failed to set parent.\n"); - clk_put(parent_clk); clk_disable(ctx->sclk_fimc_clk); - clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); - clk_put(ctx->wb_clk); - clk_put(ctx->wb_b_clk); return -EINVAL; }

- clk_put(parent_clk); + devm_clk_put(dev, parent_clk); clk_set_rate(ctx->sclk_fimc_clk, pdata->clk_rate);

/* resource memory */ @@ -1804,16 +1789,14 @@ static int fimc_probe(struct platform_device *pdev) ctx->regs = devm_request_and_ioremap(dev, ctx->regs_res); if (!ctx->regs) { dev_err(dev, "failed to map registers.\n"); - ret = -ENXIO; - goto err_clk; + return -ENXIO; }

/* resource irq */ res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); if (!res) { dev_err(dev, "failed to request irq resource.\n"); - ret = -ENOENT; - goto err_clk; + return -ENOENT; }

ctx->irq = res->start; @@ -1821,7 +1804,7 @@ static int fimc_probe(struct platform_device *pdev) IRQF_ONESHOT, "drm_fimc", ctx); if (ret < 0) { dev_err(dev, "failed to request irq.\n"); - goto err_clk; + return ret; }

/* context initailization */ @@ -1867,11 +1850,6 @@ err_ippdrv_register: pm_runtime_disable(dev); err_get_irq: free_irq(ctx->irq, ctx); -err_clk: - clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); - clk_put(ctx->wb_clk); - clk_put(ctx->wb_b_clk);

return ret; } @@ -1891,11 +1869,6 @@ static int fimc_remove(struct platform_device *pdev)

free_irq(ctx->irq, ctx);

- clk_put(ctx->sclk_fimc_clk); - clk_put(ctx->fimc_clk); - clk_put(ctx->wb_clk); - clk_put(ctx->wb_b_clk); - return 0; }