lkml.org 
[lkml]   [2019]   [Dec]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 4/4] devfreq: exynos-bus: Clean up code
Date
This patch adds minor improvements to the exynos-bus driver, including
cleaning up header includes, variables, and return paths.

Signed-off-by: Artur Świgoń <a.swigon@samsung.com>
---
drivers/devfreq/exynos-bus.c | 56 +++++++++++++++---------------------
1 file changed, 23 insertions(+), 33 deletions(-)

diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c
index 0b557df63666..3eb6a043284a 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

@@ -178,7 +177,7 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
struct device *dev = bus->dev;
struct opp_table *opp_table;
const char *vdd = "vdd";
- int i, ret, count, size;
+ int i, ret, count;

opp_table = dev_pm_opp_set_regulators(dev, &vdd, 1);
if (IS_ERR(opp_table)) {
@@ -201,8 +200,7 @@ static int exynos_bus_parent_parse_of(struct device_node *np,
}
bus->edev_count = count;

- size = sizeof(*bus->edev) * count;
- bus->edev = devm_kzalloc(dev, size, GFP_KERNEL);
+ bus->edev = devm_kcalloc(dev, count, sizeof(*bus->edev), GFP_KERNEL);
if (!bus->edev) {
ret = -ENOMEM;
goto err_regulator;
@@ -301,10 +299,9 @@ 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 +311,14 @@ 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 +328,16 @@ 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 +346,6 @@ 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;
@@ -359,30 +353,26 @@ 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 */
- bus->devfreq = devm_devfreq_add_device(dev, profile, DEVFREQ_GOV_PASSIVE,
+ bus->devfreq = devm_devfreq_add_device(dev, profile,
+ DEVFREQ_GOV_PASSIVE,
passive_data);
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)
@@ -400,18 +390,18 @@ static int exynos_bus_probe(struct platform_device *pdev)
return -EINVAL;
}

- bus = devm_kzalloc(&pdev->dev, sizeof(*bus), GFP_KERNEL);
+ bus = devm_kzalloc(dev, sizeof(*bus), GFP_KERNEL);
if (!bus)
return -ENOMEM;
mutex_init(&bus->lock);
- bus->dev = &pdev->dev;
+ bus->dev = dev;
platform_set_drvdata(pdev, bus);

profile = devm_kzalloc(dev, sizeof(*profile), GFP_KERNEL);
if (!profile)
return -ENOMEM;

- node = of_parse_phandle(dev->of_node, "devfreq", 0);
+ node = of_parse_phandle(np, "devfreq", 0);
if (node) {
of_node_put(node);
passive = true;
--
2.17.1
\
 
 \ /
  Last update: 2019-12-09 11:51    [W:0.081 / U:40.680 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site