From cddd1f71d972a43c88f0ef91e1b71023539cd6e0 Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Tue, 7 Apr 2009 15:37:27 +0000 Subject: [PATCH] panasonic-laptop: use .notify method instead of installing handler directly This patch adds a .notify() method. The presence of .notify() causes Linux/ACPI to manage event handlers and notify handlers on our behalf, so we don't have to install and remove them ourselves. Signed-off-by: Bjorn Helgaas CC: Harald Welte Signed-off-by: Len Brown --- drivers/platform/x86/panasonic-laptop.c | 26 +++++-------------------- 1 file changed, 5 insertions(+), 21 deletions(-) diff --git a/drivers/platform/x86/panasonic-laptop.c b/drivers/platform/x86/panasonic-laptop.c index a5ce4bc202e3..1a11de0d3e6d 100644 --- a/drivers/platform/x86/panasonic-laptop.c +++ b/drivers/platform/x86/panasonic-laptop.c @@ -176,6 +176,7 @@ enum SINF_BITS { SINF_NUM_BATTERIES = 0, static int acpi_pcc_hotkey_add(struct acpi_device *device); static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type); static int acpi_pcc_hotkey_resume(struct acpi_device *device); +static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event); static const struct acpi_device_id pcc_device_ids[] = { { "MAT0012", 0}, @@ -194,6 +195,7 @@ static struct acpi_driver acpi_pcc_driver = { .add = acpi_pcc_hotkey_add, .remove = acpi_pcc_hotkey_remove, .resume = acpi_pcc_hotkey_resume, + .notify = acpi_pcc_hotkey_notify, }, }; @@ -527,9 +529,9 @@ static void acpi_pcc_generate_keyinput(struct pcc_acpi *pcc) return; } -static void acpi_pcc_hotkey_notify(acpi_handle handle, u32 event, void *data) +static void acpi_pcc_hotkey_notify(struct acpi_device *device, u32 event) { - struct pcc_acpi *pcc = (struct pcc_acpi *) data; + struct pcc_acpi *pcc = acpi_driver_data(device); switch (event) { case HKEY_NOTIFY: @@ -599,7 +601,6 @@ static int acpi_pcc_hotkey_resume(struct acpi_device *device) static int acpi_pcc_hotkey_add(struct acpi_device *device) { - acpi_status status; struct pcc_acpi *pcc; int num_sifr, result; @@ -640,22 +641,11 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device) goto out_sinf; } - /* initialize hotkey input device */ - status = acpi_install_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify, pcc); - - if (ACPI_FAILURE(status)) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, - "Error installing notify handler\n")); - result = -ENODEV; - goto out_input; - } - /* initialize backlight */ pcc->backlight = backlight_device_register("panasonic", NULL, pcc, &pcc_backlight_ops); if (IS_ERR(pcc->backlight)) - goto out_notify; + goto out_input; if (!acpi_pcc_retrieve_biosdata(pcc, pcc->sinf)) { ACPI_DEBUG_PRINT((ACPI_DB_ERROR, @@ -680,9 +670,6 @@ static int acpi_pcc_hotkey_add(struct acpi_device *device) out_backlight: backlight_device_unregister(pcc->backlight); -out_notify: - acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify); out_input: input_unregister_device(pcc->input_dev); /* no need to input_free_device() since core input API refcount and @@ -723,9 +710,6 @@ static int acpi_pcc_hotkey_remove(struct acpi_device *device, int type) backlight_device_unregister(pcc->backlight); - acpi_remove_notify_handler(pcc->handle, ACPI_DEVICE_NOTIFY, - acpi_pcc_hotkey_notify); - input_unregister_device(pcc->input_dev); /* no need to input_free_device() since core input API refcount and * free()s the device */ -- 2.30.2