From mboxrd@z Thu Jan 1 00:00:00 1970 From: Len Brown Subject: [PATCH 09/12] ACPI: Battery: Synchronize battery operations. Date: Fri, 3 Aug 2007 18:33:42 -0400 Message-ID: <11861804344148-git-send-email-len.brown@intel.com> References: <11861804251625-git-send-email-len.brown@intel.com> Return-path: Received: from mga01.intel.com ([192.55.52.88]:28479 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763845AbXHCWdz (ORCPT ); Fri, 3 Aug 2007 18:33:55 -0400 In-Reply-To: <11861804251625-git-send-email-len.brown@intel.com> Message-Id: <3bd92ba19a89fe61ebf58804f9c8675372f50c1c.1186180370.git.len.brown@intel.com> In-Reply-To: <67effe8fff32f60bdf51cba484766ba6003005bb.1186180370.git.len.brown@intel.com> References: <67effe8fff32f60bdf51cba484766ba6003005bb.1186180370.git.len.brown@intel.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Cc: Alexey Starikovskiy , Alexey Starikovskiy , Len Brown From: Alexey Starikovskiy http://bugzilla.kernel.org/show_bug.cgi?id=8768 Signed-off-by: Alexey Starikovskiy Signed-off-by: Len Brown --- drivers/acpi/battery.c | 47 +++++++++++++++++------------------------------ 1 files changed, 17 insertions(+), 30 deletions(-) diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index 8165103..d7b499f 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -113,7 +113,7 @@ struct acpi_battery_info { acpi_string oem_info; }; -enum acpi_battery_files{ +enum acpi_battery_files { ACPI_BATTERY_INFO = 0, ACPI_BATTERY_STATE, ACPI_BATTERY_ALARM, @@ -129,13 +129,14 @@ struct acpi_battery_flags { }; struct acpi_battery { - struct mutex mutex; struct acpi_device *device; struct acpi_battery_flags flags; struct acpi_buffer bif_data; struct acpi_buffer bst_data; + struct mutex lock; unsigned long alarm; unsigned long update_time[ACPI_BATTERY_NUMFILES]; + }; inline int acpi_battery_present(struct acpi_battery *battery) @@ -235,10 +236,10 @@ static int acpi_battery_get_info(struct acpi_battery *battery) return 0; /* Evaluate _BIF */ - - status = - acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", NULL, - &buffer); + mutex_lock(&battery->lock); + status = acpi_evaluate_object(acpi_battery_handle(battery), "_BIF", + NULL, &buffer); + mutex_unlock(&battery->lock); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BIF")); return -ENODEV; @@ -285,10 +286,10 @@ static int acpi_battery_get_state(struct acpi_battery *battery) return 0; /* Evaluate _BST */ - - status = - acpi_evaluate_object(acpi_battery_handle(battery), "_BST", NULL, - &buffer); + mutex_lock(&battery->lock); + status = acpi_evaluate_object(acpi_battery_handle(battery), "_BST", + NULL, &buffer); + mutex_unlock(&battery->lock); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BST")); return -ENODEV; @@ -336,9 +337,10 @@ static int acpi_battery_set_alarm(struct acpi_battery *battery, arg0.integer.value = alarm; - status = - acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", + mutex_lock(&battery->lock); + status = acpi_evaluate_object(acpi_battery_handle(battery), "_BTP", &arg_list, NULL); + mutex_unlock(&battery->lock); if (ACPI_FAILURE(status)) return -ENODEV; @@ -658,8 +660,6 @@ acpi_battery_write_alarm(struct file *file, if (!battery || (count > sizeof(alarm_string) - 1)) return -EINVAL; - mutex_lock(&battery->mutex); - result = acpi_battery_update(battery, 1, &update_result); if (result) { result = -ENODEV; @@ -688,9 +688,7 @@ acpi_battery_write_alarm(struct file *file, acpi_battery_check_result(battery, result); if (!result) - result = count; - - mutex_unlock(&battery->mutex); + return count; return result; } @@ -714,8 +712,6 @@ static int acpi_battery_read(int fid, struct seq_file *seq) int update_result = ACPI_BATTERY_NONE_UPDATE; int update = 0; - mutex_lock(&battery->mutex); - update = (get_seconds() - battery->update_time[fid] >= update_time); update = (update | battery->flags.update[fid]); @@ -733,7 +729,6 @@ static int acpi_battery_read(int fid, struct seq_file *seq) result = acpi_read_funcs[fid].print(seq, result); acpi_battery_check_result(battery, result); battery->flags.update[fid] = result; - mutex_unlock(&battery->mutex); return result; } @@ -897,10 +892,7 @@ static int acpi_battery_add(struct acpi_device *device) if (!battery) return -ENOMEM; - mutex_init(&battery->mutex); - - mutex_lock(&battery->mutex); - + mutex_init(&battery->lock); battery->device = device; strcpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_BATTERY_CLASS); @@ -936,7 +928,6 @@ static int acpi_battery_add(struct acpi_device *device) kfree(battery); } - mutex_unlock(&battery->mutex); return result; } @@ -951,8 +942,6 @@ static int acpi_battery_remove(struct acpi_device *device, int type) battery = acpi_driver_data(device); - mutex_lock(&battery->mutex); - status = acpi_remove_notify_handler(device->handle, ACPI_ALL_NOTIFY, acpi_battery_notify); @@ -963,9 +952,7 @@ static int acpi_battery_remove(struct acpi_device *device, int type) kfree(battery->bst_data.pointer); - mutex_unlock(&battery->mutex); - - mutex_destroy(&battery->mutex); + mutex_destroy(&battery->lock); kfree(battery); -- 1.5.3.rc3.7.gd58e