mmc: sh_mobile_sdhi: use managed resource allocations

Use managed allocations to get memory, clock and interrupts . This
significantly simplifies clean up paths.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 175ab97..fe90853 100644 (file)
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -147,7 +147,7 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
        int irq, ret, i = 0;
        bool multiplexed_isr = true;
 
-       priv = kzalloc(sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
+       priv = devm_kzalloc(&pdev->dev, sizeof(struct sh_mobile_sdhi), GFP_KERNEL);
        if (priv == NULL) {
                dev_err(&pdev->dev, "kzalloc failed\n");
                return -ENOMEM;
@@ -159,11 +159,11 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
                if (p->init) {
                        ret = p->init(pdev, &sdhi_ops);
                        if (ret)
-                               goto einit;
+                               return ret;
                }
        }
 
-       priv->clk = clk_get(&pdev->dev, NULL);
+       priv->clk = devm_clk_get(&pdev->dev, NULL);
        if (IS_ERR(priv->clk)) {
                ret = PTR_ERR(priv->clk);
                dev_err(&pdev->dev, "cannot get clock: %d\n", ret);
@@ -223,33 +223,33 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
        irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
        if (irq >= 0) {
                multiplexed_isr = false;
-               ret = request_irq(irq, tmio_mmc_card_detect_irq, 0,
+               ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_card_detect_irq, 0,
                                  dev_name(&pdev->dev), host);
                if (ret)
-                       goto eirq_card_detect;
+                       goto eirq;
        }
 
        irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
        if (irq >= 0) {
                multiplexed_isr = false;
-               ret = request_irq(irq, tmio_mmc_sdio_irq, 0,
+               ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdio_irq, 0,
                                  dev_name(&pdev->dev), host);
                if (ret)
-                       goto eirq_sdio;
+                       goto eirq;
        }
 
        irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDCARD);
        if (irq >= 0) {
                multiplexed_isr = false;
-               ret = request_irq(irq, tmio_mmc_sdcard_irq, 0,
+               ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_sdcard_irq, 0,
                                  dev_name(&pdev->dev), host);
                if (ret)
-                       goto eirq_sdcard;
+                       goto eirq;
        } else if (!multiplexed_isr) {
                dev_err(&pdev->dev,
                        "Principal SD-card IRQ is missing among named interrupts\n");
                ret = irq;
-               goto eirq_sdcard;
+               goto eirq;
        }
 
        if (multiplexed_isr) {
@@ -258,15 +258,15 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
                        if (irq < 0)
                                break;
                        i++;
-                       ret = request_irq(irq, tmio_mmc_irq, 0,
+                       ret = devm_request_irq(&pdev->dev, irq, tmio_mmc_irq, 0,
                                          dev_name(&pdev->dev), host);
                        if (ret)
-                               goto eirq_multiplexed;
+                               goto eirq;
                }
 
                /* There must be at least one IRQ source */
                if (!i)
-                       goto eirq_multiplexed;
+                       goto eirq;
        }
 
        dev_info(&pdev->dev, "%s base at 0x%08lx clock rate %u MHz\n",
@@ -276,28 +276,12 @@ static int sh_mobile_sdhi_probe(struct platform_device *pdev)
 
        return ret;
 
-eirq_multiplexed:
-       while (i--) {
-               irq = platform_get_irq(pdev, i);
-               free_irq(irq, host);
-       }
-eirq_sdcard:
-       irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_SDIO);
-       if (irq >= 0)
-               free_irq(irq, host);
-eirq_sdio:
-       irq = platform_get_irq_byname(pdev, SH_MOBILE_SDHI_IRQ_CARD_DETECT);
-       if (irq >= 0)
-               free_irq(irq, host);
-eirq_card_detect:
+eirq:
        tmio_mmc_host_remove(host);
 eprobe:
-       clk_put(priv->clk);
 eclkget:
        if (p && p->cleanup)
                p->cleanup(pdev);
-einit:
-       kfree(priv);
        return ret;
 }
 
@@ -305,26 +289,13 @@ static int sh_mobile_sdhi_remove(struct platform_device *pdev)
 {
        struct mmc_host *mmc = platform_get_drvdata(pdev);
        struct tmio_mmc_host *host = mmc_priv(mmc);
-       struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
        struct sh_mobile_sdhi_info *p = pdev->dev.platform_data;
-       int i = 0, irq;
 
        tmio_mmc_host_remove(host);
 
-       while (1) {
-               irq = platform_get_irq(pdev, i++);
-               if (irq < 0)
-                       break;
-               free_irq(irq, host);
-       }
-
-       clk_put(priv->clk);
-
        if (p && p->cleanup)
                p->cleanup(pdev);
 
-       kfree(priv);
-
        return 0;
 }