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Merge branches 'acpi-video' and 'acpi-cppc'

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* acpi-video:
  ACPI / video: only register backlight for LCD device
  ACPI / video: Add a quirk to force acpi-video backlight on Dell XPS L421X

* acpi-cppc:
  cpufreq: CPPC: Delete an unnecessary check before the function call kfree()
This commit is contained in:
Rafael J. Wysocki 2015-11-07 01:30:22 +01:00
commit 3930f660b4
3 changed files with 76 additions and 14 deletions
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78
drivers/acpi/acpi_video.c
View File

@ -77,6 +77,12 @@ module_param(allow_duplicates, bool, 0644);
static int disable_backlight_sysfs_if = -1;
module_param(disable_backlight_sysfs_if, int, 0444);
static bool device_id_scheme = false;
module_param(device_id_scheme, bool, 0444);
static bool only_lcd = false;
module_param(only_lcd, bool, 0444);
static int register_count;
static DEFINE_MUTEX(register_count_mutex);
static struct mutex video_list_lock;
@ -394,6 +400,18 @@ static int video_disable_backlight_sysfs_if(
return 0;
}
static int video_set_device_id_scheme(const struct dmi_system_id *d)
{
device_id_scheme = true;
return 0;
}
static int video_enable_only_lcd(const struct dmi_system_id *d)
{
only_lcd = true;
return 0;
}
static struct dmi_system_id video_dmi_table[] = {
/*
* Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121
@ -455,6 +473,33 @@ static struct dmi_system_id video_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "PORTEGE R830"),
},
},
/*
* Some machine's _DOD IDs don't have bit 31(Device ID Scheme) set
* but the IDs actually follow the Device ID Scheme.
*/
{
/* https://bugzilla.kernel.org/show_bug.cgi?id=104121 */
.callback = video_set_device_id_scheme,
.ident = "ESPRIMO Mobile M9410",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile M9410"),
},
},
/*
* Some machines have multiple video output devices, but only the one
* that is the type of LCD can do the backlight control so we should not
* register backlight interface for other video output devices.
*/
{
/* https://bugzilla.kernel.org/show_bug.cgi?id=104121 */
.callback = video_enable_only_lcd,
.ident = "ESPRIMO Mobile M9410",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile M9410"),
},
},
{}
};
@ -1003,7 +1048,7 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
attribute = acpi_video_get_device_attr(video, device_id);
if (attribute && attribute->device_id_scheme) {
if (attribute && (attribute->device_id_scheme || device_id_scheme)) {
switch (attribute->display_type) {
case ACPI_VIDEO_DISPLAY_CRT:
data->flags.crt = 1;
@ -1568,15 +1613,6 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
static int count;
char *name;
/*
* Do not create backlight device for video output
* device that is not in the enumerated list.
*/
if (!acpi_video_device_in_dod(device)) {
dev_dbg(&device->dev->dev, "not in _DOD list, ignore\n");
return;
}
result = acpi_video_init_brightness(device);
if (result)
return;
@ -1657,6 +1693,22 @@ static void acpi_video_run_bcl_for_osi(struct acpi_video_bus *video)
mutex_unlock(&video->device_list_lock);
}
static bool acpi_video_should_register_backlight(struct acpi_video_device *dev)
{
/*
* Do not create backlight device for video output
* device that is not in the enumerated list.
*/
if (!acpi_video_device_in_dod(dev)) {
dev_dbg(&dev->dev->dev, "not in _DOD list, ignore\n");
return false;
}
if (only_lcd)
return dev->flags.lcd;
return true;
}
static int acpi_video_bus_register_backlight(struct acpi_video_bus *video)
{
struct acpi_video_device *dev;
@ -1670,8 +1722,10 @@ static int acpi_video_bus_register_backlight(struct acpi_video_bus *video)
return 0;
mutex_lock(&video->device_list_lock);
list_for_each_entry(dev, &video->video_device_list, entry)
acpi_video_dev_register_backlight(dev);
list_for_each_entry(dev, &video->video_device_list, entry) {
if (acpi_video_should_register_backlight(dev))
acpi_video_dev_register_backlight(dev);
}
mutex_unlock(&video->device_list_lock);
video->backlight_registered = true;

9
drivers/acpi/video_detect.c
View File

@ -232,6 +232,15 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
"900X3C/900X3D/900X3E/900X4C/900X4D"),
},
},
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1272633 */
.callback = video_detect_force_video,
.ident = "Dell XPS14 L421X",
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS L421X"),
},
},
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
.callback = video_detect_force_video,

3
drivers/cpufreq/cppc_cpufreq.c
View File

@ -166,8 +166,7 @@ static int __init cppc_cpufreq_init(void)
out:
for_each_possible_cpu(i)
if (all_cpu_data[i])
kfree(all_cpu_data[i]);
kfree(all_cpu_data[i]);
kfree(all_cpu_data);
return -ENODEV;