From c1b5310a957c47d1c66bb53035c6ba6aa20a150f Mon Sep 17 00:00:00 2001 From: Jonathan Woithe Date: Thu, 27 Aug 2009 18:45:33 -0400 Subject: fujitsu-laptop: fix config corner case This patch is a trivial fix for a config corner case, ensuring that fujitsu-laptop doesn't get compiled into the kernel when the led class is a module. Signed-off-by: Alan Jenkins Signed-off-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig index 77c6097..0b5a85b 100644 --- a/drivers/platform/x86/Kconfig +++ b/drivers/platform/x86/Kconfig @@ -99,6 +99,7 @@ config FUJITSU_LAPTOP depends on ACPI depends on INPUT depends on BACKLIGHT_CLASS_DEVICE + depends on LEDS_CLASS || LEDS_CLASS=n ---help--- This is a driver for laptops built by Fujitsu: -- cgit v1.1 From 1e384cb0f9a940f2a431d1708f963987e61d71e3 Mon Sep 17 00:00:00 2001 From: Stephen Gildea Date: Tue, 25 Aug 2009 14:41:52 +0930 Subject: fujitsu-laptop: support led-class as module Support fujitsu-laptop with led-class built as a module instead of being compiled in. Signed-off-by: Stephen Gildea Acked-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/fujitsu-laptop.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 218b9a1..4c8897a 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -66,7 +66,7 @@ #include #include #include -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) #include #endif @@ -96,7 +96,7 @@ /* FUNC interface - responses */ #define UNSUPPORTED_CMD 0x80000000 -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) /* FUNC interface - LED control */ #define FUNC_LED_OFF 0x1 #define FUNC_LED_ON 0x30001 @@ -176,7 +176,7 @@ static struct fujitsu_hotkey_t *fujitsu_hotkey; static void acpi_fujitsu_hotkey_notify(struct acpi_device *device, u32 event); -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) static enum led_brightness logolamp_get(struct led_classdev *cdev); static void logolamp_set(struct led_classdev *cdev, enum led_brightness brightness); @@ -257,7 +257,7 @@ static int call_fext_func(int cmd, int arg0, int arg1, int arg2) return out_obj.integer.value; } -#ifdef CONFIG_LEDS_CLASS +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) /* LED class callbacks */ static void logolamp_set(struct led_classdev *cdev, @@ -911,7 +911,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device) printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0)); - #ifdef CONFIG_LEDS_CLASS + #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) { result = led_classdev_register(&fujitsu->pf_device->dev, &logolamp_led); @@ -1204,7 +1204,7 @@ fail_acpi: static void __exit fujitsu_cleanup(void) { - #ifdef CONFIG_LEDS_CLASS + #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) if (fujitsu_hotkey->logolamp_registered != 0) led_classdev_unregister(&logolamp_led); -- cgit v1.1 From 14485c57270e8f3de2a25abaf93bae5712c97e9e Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Fri, 31 Jul 2009 18:12:00 +0930 Subject: fujitsu-laptop: Correct redundant test device and acpi_driver_data(device) were tested just a few lines above. A simplified version of the semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // @r exists@ local idexpression x; expression E; @@ if (x == NULL || ...) { ... when forall return ...; } .. when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( *x == NULL | *x != NULL ) // Signed-off-by: Julia Lawall Acked-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/fujitsu-laptop.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 4c8897a..0d42f44 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -745,9 +745,6 @@ static int acpi_fujitsu_remove(struct acpi_device *device, int type) fujitsu = acpi_driver_data(device); - if (!device || !acpi_driver_data(device)) - return -EINVAL; - fujitsu->acpi_handle = NULL; return 0; -- cgit v1.1 From 67059406219d30a36b7ca93f863eb1f3032f05ce Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 31 Jul 2009 08:43:56 +0000 Subject: fujitsu-laptop: remove superfluous NULL pointer checks This takes care of the following entries from Dan's list: drivers/platform/x86/fujitsu-laptop.c +327 set_lcd_level(13) warning: variable derefenced before check 'fujitsu' drivers/platform/x86/fujitsu-laptop.c +358 set_lcd_level_alt(13) warning: variable derefenced before check 'fujitsu' Reported-by: Dan Carpenter Cc: corbet@lwn.net Cc: eteo@redhat.com Cc: Julia Lawall Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/fujitsu-laptop.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index 0d42f44..f9e3e3a 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -324,9 +324,6 @@ static int set_lcd_level(int level) if (level < 0 || level >= fujitsu->max_brightness) return -EINVAL; - if (!fujitsu) - return -EINVAL; - status = acpi_get_handle(fujitsu->acpi_handle, "SBLL", &handle); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBLL not present\n"); @@ -355,9 +352,6 @@ static int set_lcd_level_alt(int level) if (level < 0 || level >= fujitsu->max_brightness) return -EINVAL; - if (!fujitsu) - return -EINVAL; - status = acpi_get_handle(fujitsu->acpi_handle, "SBL2", &handle); if (ACPI_FAILURE(status)) { vdbg_printk(FUJLAPTOP_DBG_ERROR, "SBL2 not present\n"); -- cgit v1.1 From 72afeeafe54853881a4e53dc78d538e249130ad8 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Fri, 31 Jul 2009 18:16:02 +0930 Subject: fujitsu-laptop: driver [un]registration fixes * Move led_classdev_unregister() calls from fujitsu_cleanup() to acpi_fujitsu_hotkey_remove(). * Fix ordering in fujitsu_cleanup(). * Fix backlight_device_register() failure handling in fujitsu_init(). * Add missing sysfs group removal on failure to fujitsu_init(). * Add input device unregistering on failure to acpi_fujitsu_add() and acpi_fujitsu_hotkey_add(). * Add input device unregistering/freeing to acpi_fujitsu_remove() and acpi_fujitsu_hotkey_remove() (also remove superfluous 'device' and 'acpi_driver_data(device)' checks while at it). * Do few minor cleanups. Signed-off-by: Bartlomiej Zolnierkiewicz Acked-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/fujitsu-laptop.c | 86 +++++++++++++++++------------------ 1 file changed, 41 insertions(+), 45 deletions(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index f9e3e3a..b87a5a2 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -691,7 +691,7 @@ static int acpi_fujitsu_add(struct acpi_device *device) result = acpi_bus_get_power(fujitsu->acpi_handle, &state); if (result) { printk(KERN_ERR "Error reading power state\n"); - goto end; + goto err_unregister_input_dev; } printk(KERN_INFO PREFIX "%s [%s] (%s)\n", @@ -722,22 +722,22 @@ static int acpi_fujitsu_add(struct acpi_device *device) return result; -end: +err_unregister_input_dev: + input_unregister_device(input); err_free_input_dev: input_free_device(input); err_stop: - return result; } static int acpi_fujitsu_remove(struct acpi_device *device, int type) { - struct fujitsu_t *fujitsu = NULL; + struct fujitsu_t *fujitsu = acpi_driver_data(device); + struct input_dev *input = fujitsu->input; - if (!device || !acpi_driver_data(device)) - return -EINVAL; + input_unregister_device(input); - fujitsu = acpi_driver_data(device); + input_free_device(input); fujitsu->acpi_handle = NULL; @@ -862,7 +862,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device) result = acpi_bus_get_power(fujitsu_hotkey->acpi_handle, &state); if (result) { printk(KERN_ERR "Error reading power state\n"); - goto end; + goto err_unregister_input_dev; } printk(KERN_INFO PREFIX "%s [%s] (%s)\n", @@ -902,7 +902,7 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device) printk(KERN_INFO "fujitsu-laptop: BTNI: [0x%x]\n", call_fext_func(FUNC_BUTTONS, 0x0, 0x0, 0x0)); - #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) +#if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) if (call_fext_func(FUNC_LEDS, 0x0, 0x0, 0x0) & LOGOLAMP_POWERON) { result = led_classdev_register(&fujitsu->pf_device->dev, &logolamp_led); @@ -925,33 +925,41 @@ static int acpi_fujitsu_hotkey_add(struct acpi_device *device) "LED handler for keyboard lamps, error %i\n", result); } } - #endif +#endif return result; -end: +err_unregister_input_dev: + input_unregister_device(input); err_free_input_dev: input_free_device(input); err_free_fifo: kfifo_free(fujitsu_hotkey->fifo); err_stop: - return result; } static int acpi_fujitsu_hotkey_remove(struct acpi_device *device, int type) { - struct fujitsu_hotkey_t *fujitsu_hotkey = NULL; + struct fujitsu_hotkey_t *fujitsu_hotkey = acpi_driver_data(device); + struct input_dev *input = fujitsu_hotkey->input; - if (!device || !acpi_driver_data(device)) - return -EINVAL; +#ifdef CONFIG_LEDS_CLASS + if (fujitsu_hotkey->logolamp_registered) + led_classdev_unregister(&logolamp_led); + + if (fujitsu_hotkey->kblamps_registered) + led_classdev_unregister(&kblamps_led); +#endif - fujitsu_hotkey = acpi_driver_data(device); + input_unregister_device(input); - fujitsu_hotkey->acpi_handle = NULL; + input_free_device(input); kfifo_free(fujitsu_hotkey->fifo); + fujitsu_hotkey->acpi_handle = NULL; + return 0; } @@ -1121,8 +1129,11 @@ static int __init fujitsu_init(void) fujitsu->bl_device = backlight_device_register("fujitsu-laptop", NULL, NULL, &fujitsubl_ops); - if (IS_ERR(fujitsu->bl_device)) - return PTR_ERR(fujitsu->bl_device); + if (IS_ERR(fujitsu->bl_device)) { + ret = PTR_ERR(fujitsu->bl_device); + fujitsu->bl_device = NULL; + goto fail_sysfs_group; + } max_brightness = fujitsu->max_brightness; fujitsu->bl_device->props.max_brightness = max_brightness - 1; fujitsu->bl_device->props.brightness = fujitsu->brightness_level; @@ -1162,32 +1173,22 @@ static int __init fujitsu_init(void) return 0; fail_hotkey1: - kfree(fujitsu_hotkey); - fail_hotkey: - platform_driver_unregister(&fujitsupf_driver); - fail_backlight: - if (fujitsu->bl_device) backlight_device_unregister(fujitsu->bl_device); - +fail_sysfs_group: + sysfs_remove_group(&fujitsu->pf_device->dev.kobj, + &fujitsupf_attribute_group); fail_platform_device2: - platform_device_del(fujitsu->pf_device); - fail_platform_device1: - platform_device_put(fujitsu->pf_device); - fail_platform_driver: - acpi_bus_unregister_driver(&acpi_fujitsu_driver); - fail_acpi: - kfree(fujitsu); return ret; @@ -1195,28 +1196,23 @@ fail_acpi: static void __exit fujitsu_cleanup(void) { - #if defined(CONFIG_LEDS_CLASS) || defined(CONFIG_LEDS_CLASS_MODULE) - if (fujitsu_hotkey->logolamp_registered != 0) - led_classdev_unregister(&logolamp_led); + acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver); - if (fujitsu_hotkey->kblamps_registered != 0) - led_classdev_unregister(&kblamps_led); - #endif + kfree(fujitsu_hotkey); - sysfs_remove_group(&fujitsu->pf_device->dev.kobj, - &fujitsupf_attribute_group); - platform_device_unregister(fujitsu->pf_device); platform_driver_unregister(&fujitsupf_driver); + if (fujitsu->bl_device) backlight_device_unregister(fujitsu->bl_device); - acpi_bus_unregister_driver(&acpi_fujitsu_driver); + sysfs_remove_group(&fujitsu->pf_device->dev.kobj, + &fujitsupf_attribute_group); - kfree(fujitsu); + platform_device_unregister(fujitsu->pf_device); - acpi_bus_unregister_driver(&acpi_fujitsu_hotkey_driver); + acpi_bus_unregister_driver(&acpi_fujitsu_driver); - kfree(fujitsu_hotkey); + kfree(fujitsu); printk(KERN_INFO "fujitsu-laptop: driver unloaded.\n"); } -- cgit v1.1 From 84a6ce267296dabdf427ea4aff73dc58164863bb Mon Sep 17 00:00:00 2001 From: Jonathan Woithe Date: Fri, 31 Jul 2009 18:16:59 +0930 Subject: fujitsu-laptop: increment driver version Increment driver version to reflect the changes from this patch series. Signed-off-by: Jonathan Woithe Signed-off-by: Len Brown --- drivers/platform/x86/fujitsu-laptop.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/platform') diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c index b87a5a2..1ed3513 100644 --- a/drivers/platform/x86/fujitsu-laptop.c +++ b/drivers/platform/x86/fujitsu-laptop.c @@ -70,7 +70,7 @@ #include #endif -#define FUJITSU_DRIVER_VERSION "0.5.0" +#define FUJITSU_DRIVER_VERSION "0.6.0" #define FUJITSU_LCD_N_LEVELS 8 -- cgit v1.1