From 1cb82fdb2a0fb2af9da69eeee92877189ec9a560 Mon Sep 17 00:00:00 2001 From: Himangi Saraogi Date: Wed, 28 May 2014 22:58:49 +0530 Subject: bq27x00_battery: Introduce the use of the managed version of kzalloc This patch moves data allocated using kzalloc to managed data allocated using devm_kzalloc and cleans now unnecessary kfrees in probe and remove functions for both platform and i2c drivers. Also, the unecessary variable ret and labels batt_failed3, err_free were removed. The following Coccinele script was used for making the change: @platform@ identifier p, probefn, removefn; @@ struct platform_driver p = { .probe = probefn, .remove = removefn, }; @prb@ identifier platform.probefn, pdev; expression e, e1, e2; @@ probefn(struct platform_device *pdev, ...) { <+... - e = kzalloc(e1, e2) + e = devm_kzalloc(&pdev->dev, e1, e2) ... ?-kfree(e); ...+> } @rem depends on prb@ identifier platform.removefn; expression e; @@ removefn(...) { <... - kfree(e); ...> } Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Sebastian Reichel --- drivers/power/bq27x00_battery.c | 25 +++++-------------------- 1 file changed, 5 insertions(+), 20 deletions(-) (limited to 'drivers/power') diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index b309713b63bc5..a0f205b0471dd 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -25,6 +25,7 @@ * http://www.ti.com/product/bq27425-g1 */ +#include #include #include #include @@ -804,7 +805,7 @@ static int bq27x00_battery_probe(struct i2c_client *client, goto batt_failed_1; } - di = kzalloc(sizeof(*di), GFP_KERNEL); + di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL); if (!di) { dev_err(&client->dev, "failed to allocate device info data\n"); retval = -ENOMEM; @@ -819,14 +820,12 @@ static int bq27x00_battery_probe(struct i2c_client *client, retval = bq27x00_powersupply_init(di); if (retval) - goto batt_failed_3; + goto batt_failed_2; i2c_set_clientdata(client, di); return 0; -batt_failed_3: - kfree(di); batt_failed_2: kfree(name); batt_failed_1: @@ -849,8 +848,6 @@ static int bq27x00_battery_remove(struct i2c_client *client) idr_remove(&battery_id, di->id); mutex_unlock(&battery_mutex); - kfree(di); - return 0; } @@ -933,7 +930,6 @@ static int bq27000_battery_probe(struct platform_device *pdev) { struct bq27x00_device_info *di; struct bq27000_platform_data *pdata = pdev->dev.platform_data; - int ret; if (!pdata) { dev_err(&pdev->dev, "no platform_data supplied\n"); @@ -945,7 +941,7 @@ static int bq27000_battery_probe(struct platform_device *pdev) return -EINVAL; } - di = kzalloc(sizeof(*di), GFP_KERNEL); + di = devm_kzalloc(&pdev->dev, sizeof(*di), GFP_KERNEL); if (!di) { dev_err(&pdev->dev, "failed to allocate device info data\n"); return -ENOMEM; @@ -959,16 +955,7 @@ static int bq27000_battery_probe(struct platform_device *pdev) di->bat.name = pdata->name ?: dev_name(&pdev->dev); di->bus.read = &bq27000_read_platform; - ret = bq27x00_powersupply_init(di); - if (ret) - goto err_free; - - return 0; - -err_free: - kfree(di); - - return ret; + return bq27x00_powersupply_init(di); } static int bq27000_battery_remove(struct platform_device *pdev) @@ -977,8 +964,6 @@ static int bq27000_battery_remove(struct platform_device *pdev) bq27x00_powersupply_unregister(di); - kfree(di); - return 0; } -- cgit v1.2.3