The devm_ functions allocate memory that is released when a driver detaches. This patch uses devm_clk_get() and devm_request_irq() for these functions. These make the code smaller and a bit simpler.
Signed-off-by: Jingoo Han <[email protected]> --- drivers/i2c/busses/i2c-s3c2410.c | 24 +++++++----------------- 1 files changed, 7 insertions(+), 17 deletions(-) diff --git a/drivers/i2c/busses/i2c-s3c2410.c b/drivers/i2c/busses/i2c-s3c2410.c index a290d08..f174932 100644 --- a/drivers/i2c/busses/i2c-s3c2410.c +++ b/drivers/i2c/busses/i2c-s3c2410.c @@ -999,10 +999,8 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) } i2c->pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); - if (!i2c->pdata) { - ret = -ENOMEM; - goto err_noclk; - } + if (!i2c->pdata) + return -ENOMEM; i2c->quirks = s3c24xx_get_device_quirks(pdev); if (pdata) @@ -1022,11 +1020,10 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) /* find the clock and enable it */ i2c->dev = &pdev->dev; - i2c->clk = clk_get(&pdev->dev, "i2c"); + i2c->clk = devm_clk_get(&pdev->dev, "i2c"); if (IS_ERR(i2c->clk)) { dev_err(&pdev->dev, "cannot get clock\n"); - ret = -ENOENT; - goto err_noclk; + return -ENOENT; } dev_dbg(&pdev->dev, "clock source %p\n", i2c->clk); @@ -1085,8 +1082,8 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) goto err_clk; } - ret = request_irq(i2c->irq, s3c24xx_i2c_irq, 0, - dev_name(&pdev->dev), i2c); + ret = devm_request_irq(&pdev->dev, i2c->irq, s3c24xx_i2c_irq, 0, + dev_name(&pdev->dev), i2c); if (ret != 0) { dev_err(&pdev->dev, "cannot claim IRQ %d\n", i2c->irq); @@ -1096,7 +1093,7 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) ret = s3c24xx_i2c_register_cpufreq(i2c); if (ret < 0) { dev_err(&pdev->dev, "failed to register cpufreq notifier\n"); - goto err_irq; + goto err_clk; } /* Note, previous versions of the driver used i2c_add_adapter() @@ -1127,14 +1124,9 @@ static int s3c24xx_i2c_probe(struct platform_device *pdev) err_cpufreq: s3c24xx_i2c_deregister_cpufreq(i2c); - err_irq: - free_irq(i2c->irq, i2c); - err_clk: clk_disable_unprepare(i2c->clk); - clk_put(i2c->clk); - err_noclk: return ret; } @@ -1153,10 +1145,8 @@ static int s3c24xx_i2c_remove(struct platform_device *pdev) s3c24xx_i2c_deregister_cpufreq(i2c); i2c_del_adapter(&i2c->adap); - free_irq(i2c->irq, i2c); clk_disable_unprepare(i2c->clk); - clk_put(i2c->clk); if (pdev->dev.of_node && IS_ERR(i2c->pctrl)) s3c24xx_i2c_dt_gpio_free(i2c); -- 1.7.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
