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platform: x86: Deletion of checks before backlight_device_unregister()

Browse Source 
The backlight_device_unregister() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
For msi-wmi.c:
Acked-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
This commit is contained in:
Markus Elfring 2014-11-24 20:30:29 +01:00 committed by Darren Hart
parent a39f46df33
commit 0098181016
9 changed files with 10 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/platform/x86/asus-laptop.c
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@ -843,8 +843,7 @@ static int asus_backlight_init(struct asus_laptop *asus)
static void asus_backlight_exit(struct asus_laptop *asus) static void asus_backlight_exit(struct asus_laptop *asus)
{ {
if (asus->backlight_device) backlight_device_unregister(asus->backlight_device);
backlight_device_unregister(asus->backlight_device);
asus->backlight_device = NULL; asus->backlight_device = NULL;
} }

3
drivers/platform/x86/asus-wmi.c
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@ -1308,8 +1308,7 @@ static int asus_wmi_backlight_init(struct asus_wmi *asus)
static void asus_wmi_backlight_exit(struct asus_wmi *asus) static void asus_wmi_backlight_exit(struct asus_wmi *asus)
{ {
if (asus->backlight_device) backlight_device_unregister(asus->backlight_device);
backlight_device_unregister(asus->backlight_device);
asus->backlight_device = NULL; asus->backlight_device = NULL;
} }

3
drivers/platform/x86/eeepc-laptop.c
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@ -1174,8 +1174,7 @@ static int eeepc_backlight_init(struct eeepc_laptop *eeepc)
static void eeepc_backlight_exit(struct eeepc_laptop *eeepc) static void eeepc_backlight_exit(struct eeepc_laptop *eeepc)
{ {
if (eeepc->backlight_device) backlight_device_unregister(eeepc->backlight_device);
backlight_device_unregister(eeepc->backlight_device);
eeepc->backlight_device = NULL; eeepc->backlight_device = NULL;
} }

6
drivers/platform/x86/fujitsu-laptop.c
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@ -1154,8 +1154,7 @@ fail_hotkey1:
fail_hotkey: fail_hotkey:
platform_driver_unregister(&fujitsupf_driver); platform_driver_unregister(&fujitsupf_driver);
fail_backlight: fail_backlight:
if (fujitsu->bl_device) backlight_device_unregister(fujitsu->bl_device);
backlight_device_unregister(fujitsu->bl_device);
fail_sysfs_group: fail_sysfs_group:
sysfs_remove_group(&fujitsu->pf_device->dev.kobj, sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
&fujitsupf_attribute_group); &fujitsupf_attribute_group);
@ -1179,8 +1178,7 @@ static void __exit fujitsu_cleanup(void)
platform_driver_unregister(&fujitsupf_driver); platform_driver_unregister(&fujitsupf_driver);
if (fujitsu->bl_device) backlight_device_unregister(fujitsu->bl_device);
backlight_device_unregister(fujitsu->bl_device);
sysfs_remove_group(&fujitsu->pf_device->dev.kobj, sysfs_remove_group(&fujitsu->pf_device->dev.kobj,
&fujitsupf_attribute_group); &fujitsupf_attribute_group);

3
drivers/platform/x86/ideapad-laptop.c
View File

@ -729,8 +729,7 @@ static int ideapad_backlight_init(struct ideapad_private *priv)
static void ideapad_backlight_exit(struct ideapad_private *priv) static void ideapad_backlight_exit(struct ideapad_private *priv)
{ {
if (priv->blightdev) backlight_device_unregister(priv->blightdev);
backlight_device_unregister(priv->blightdev);
priv->blightdev = NULL; priv->blightdev = NULL;
} }

3
drivers/platform/x86/intel_oaktrail.c
View File

@ -271,8 +271,7 @@ static int oaktrail_backlight_init(void)
static void oaktrail_backlight_exit(void) static void oaktrail_backlight_exit(void)
{ {
if (oaktrail_bl_device) backlight_device_unregister(oaktrail_bl_device);
backlight_device_unregister(oaktrail_bl_device);
} }
static int oaktrail_probe(struct platform_device *pdev) static int oaktrail_probe(struct platform_device *pdev)

3
drivers/platform/x86/msi-wmi.c
View File

@ -354,8 +354,7 @@ static void __exit msi_wmi_exit(void)
sparse_keymap_free(msi_wmi_input_dev); sparse_keymap_free(msi_wmi_input_dev);
input_unregister_device(msi_wmi_input_dev); input_unregister_device(msi_wmi_input_dev);
} }
if (backlight) backlight_device_unregister(backlight);
backlight_device_unregister(backlight);
} }
module_init(msi_wmi_init); module_init(msi_wmi_init);

3
drivers/platform/x86/sony-laptop.c
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@ -3141,8 +3141,7 @@ static void sony_nc_backlight_setup(void)
static void sony_nc_backlight_cleanup(void) static void sony_nc_backlight_cleanup(void)
{ {
if (sony_bl_props.dev) backlight_device_unregister(sony_bl_props.dev);
backlight_device_unregister(sony_bl_props.dev);
} }
static int sony_nc_add(struct acpi_device *device) static int sony_nc_add(struct acpi_device *device)

3
drivers/platform/x86/toshiba_acpi.c
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@ -1797,8 +1797,7 @@ static int toshiba_acpi_remove(struct acpi_device *acpi_dev)
rfkill_destroy(dev->bt_rfk); rfkill_destroy(dev->bt_rfk);
} }
if (dev->backlight_dev) backlight_device_unregister(dev->backlight_dev);
backlight_device_unregister(dev->backlight_dev);
if (dev->illumination_supported) if (dev->illumination_supported)
led_classdev_unregister(&dev->led_dev); led_classdev_unregister(&dev->led_dev);