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author | Artur Świgoń <a.swigon@samsung.com> | 2019-12-16 11:47:48 +0100 |
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committer | Chanwoo Choi <cw00.choi@samsung.com> | 2019-12-30 01:59:06 +0100 |
commit | a440892142118e68d05940fde66afd0278ce3d45 (patch) | |
tree | 9d62a659a4db23c489d4ce95904af8bef8e58290 /drivers/devfreq | |
parent | PM / devfreq: rk3399_dmc: Add COMPILE_TEST and HAVE_ARM_SMCCC dependency (diff) | |
download | linux-a440892142118e68d05940fde66afd0278ce3d45.tar.xz linux-a440892142118e68d05940fde66afd0278ce3d45.zip |
PM / devfreq: exynos-bus: Reduce goto statements and remove unused headers
Improve code readability by changing the goto statements
as well as eliminating a few more goto statements (related to return
paths). Moreover, remove unused header file and adds a missing <linux/of.h>.
Signed-off-by: Artur Świgoń <a.swigon@samsung.com>
[cw00.choi: Edit patch title and description]
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Diffstat (limited to 'drivers/devfreq')
-rw-r--r-- | drivers/devfreq/exynos-bus.c | 54 |
1 files changed, 19 insertions, 35 deletions
diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c index 19d9f9f8ced2..7f5917d59072 100644 --- a/drivers/devfreq/exynos-bus.c +++ b/drivers/devfreq/exynos-bus.c @@ -15,11 +15,10 @@ #include <linux/device.h> #include <linux/export.h> #include <linux/module.h> -#include <linux/of_device.h> +#include <linux/of.h> #include <linux/pm_opp.h> #include <linux/platform_device.h> #include <linux/regulator/consumer.h> -#include <linux/slab.h> #define DEFAULT_SATURATION_RATIO 40 @@ -301,10 +300,9 @@ static int exynos_bus_profile_init(struct exynos_bus *bus, profile->exit = exynos_bus_exit; ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL); - if (!ondemand_data) { - ret = -ENOMEM; - goto err; - } + if (!ondemand_data) + return -ENOMEM; + ondemand_data->upthreshold = 40; ondemand_data->downdifferential = 5; @@ -314,15 +312,14 @@ static int exynos_bus_profile_init(struct exynos_bus *bus, ondemand_data); if (IS_ERR(bus->devfreq)) { dev_err(dev, "failed to add devfreq device\n"); - ret = PTR_ERR(bus->devfreq); - goto err; + return PTR_ERR(bus->devfreq); } /* Register opp_notifier to catch the change of OPP */ ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq); if (ret < 0) { dev_err(dev, "failed to register opp notifier\n"); - goto err; + return ret; } /* @@ -332,17 +329,16 @@ static int exynos_bus_profile_init(struct exynos_bus *bus, ret = exynos_bus_enable_edev(bus); if (ret < 0) { dev_err(dev, "failed to enable devfreq-event devices\n"); - goto err; + return ret; } ret = exynos_bus_set_event(bus); if (ret < 0) { dev_err(dev, "failed to set event to devfreq-event devices\n"); - goto err; + return ret; } -err: - return ret; + return 0; } static int exynos_bus_profile_init_passive(struct exynos_bus *bus, @@ -351,7 +347,6 @@ static int exynos_bus_profile_init_passive(struct exynos_bus *bus, struct device *dev = bus->dev; struct devfreq_passive_data *passive_data; struct devfreq *parent_devfreq; - int ret = 0; /* Initialize the struct profile and governor data for passive device */ profile->target = exynos_bus_target; @@ -359,16 +354,13 @@ static int exynos_bus_profile_init_passive(struct exynos_bus *bus, /* Get the instance of parent devfreq device */ parent_devfreq = devfreq_get_devfreq_by_phandle(dev, 0); - if (IS_ERR(parent_devfreq)) { - ret = -EPROBE_DEFER; - goto err; - } + if (IS_ERR(parent_devfreq)) + return -EPROBE_DEFER; passive_data = devm_kzalloc(dev, sizeof(*passive_data), GFP_KERNEL); - if (!passive_data) { - ret = -ENOMEM; - goto err; - } + if (!passive_data) + return -ENOMEM; + passive_data->parent = parent_devfreq; /* Add devfreq device for exynos bus with passive governor */ @@ -377,12 +369,10 @@ static int exynos_bus_profile_init_passive(struct exynos_bus *bus, if (IS_ERR(bus->devfreq)) { dev_err(dev, "failed to add devfreq dev with passive governor\n"); - ret = PTR_ERR(bus->devfreq); - goto err; + return PTR_ERR(bus->devfreq); } -err: - return ret; + return 0; } static int exynos_bus_probe(struct platform_device *pdev) @@ -427,19 +417,13 @@ static int exynos_bus_probe(struct platform_device *pdev) goto err_reg; if (passive) - goto passive; - - ret = exynos_bus_profile_init(bus, profile); - if (ret < 0) - goto err; + ret = exynos_bus_profile_init_passive(bus, profile); + else + ret = exynos_bus_profile_init(bus, profile); - goto out; -passive: - ret = exynos_bus_profile_init_passive(bus, profile); if (ret < 0) goto err; -out: max_state = bus->devfreq->profile->max_state; min_freq = (bus->devfreq->profile->freq_table[0] / 1000); max_freq = (bus->devfreq->profile->freq_table[max_state - 1] / 1000); |