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authorLinus Torvalds <torvalds@linux-foundation.org>2010-03-18 16:47:04 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-03-18 16:47:04 -0700
commit5dbc2f543d2eb5499f3839d1abb72105cf0c03af (patch)
tree92a021819ad4cf155f26cb8f672a2ce464a7eeba
parent01d61d0d64065b591a3c1502d42b350b10764c54 (diff)
parent14b5d6dd40b3091cb5f566568baa4a74dc619286 (diff)
Merge branch 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds
* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds: leds: Fix race between LED device uevent and actual attributes creation leds-gpio: fix default state handling on OF platforms leds: Add Dell Business Class Netbook LED driver leds: Kconfig cleanup leds: led-class.c - Quiet boot messages leds: make PCI device id constant leds: ALIX2: Add dependency to !GPIO_CS5335
-rw-r--r--drivers/leds/Kconfig80
-rw-r--r--drivers/leds/Makefile1
-rw-r--r--drivers/leds/dell-led.c200
-rw-r--r--drivers/leds/led-class.c42
-rw-r--r--drivers/leds/leds-gpio.c3
-rw-r--r--drivers/leds/leds-ss4200.c2
6 files changed, 257 insertions, 71 deletions
diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig
index e0b64312e66a..505eb64c329c 100644
--- a/drivers/leds/Kconfig
+++ b/drivers/leds/Kconfig
@@ -15,6 +15,8 @@ config LEDS_CLASS
This option enables the led sysfs class in /sys/class/leds. You'll
need this to do anything useful with LEDs. If unsure, say N.
+if LEDS_CLASS
+
comment "LED drivers"
config LEDS_88PM860X
@@ -26,73 +28,73 @@ config LEDS_88PM860X
config LEDS_ATMEL_PWM
tristate "LED Support using Atmel PWM outputs"
- depends on LEDS_CLASS && ATMEL_PWM
+ depends on ATMEL_PWM
help
This option enables support for LEDs driven using outputs
of the dedicated PWM controller found on newer Atmel SOCs.
config LEDS_LOCOMO
tristate "LED Support for Locomo device"
- depends on LEDS_CLASS && SHARP_LOCOMO
+ depends on SHARP_LOCOMO
help
This option enables support for the LEDs on Sharp Locomo.
Zaurus models SL-5500 and SL-5600.
config LEDS_MIKROTIK_RB532
tristate "LED Support for Mikrotik Routerboard 532"
- depends on LEDS_CLASS && MIKROTIK_RB532
+ depends on MIKROTIK_RB532
help
This option enables support for the so called "User LED" of
Mikrotik's Routerboard 532.
config LEDS_S3C24XX
tristate "LED Support for Samsung S3C24XX GPIO LEDs"
- depends on LEDS_CLASS && ARCH_S3C2410
+ depends on ARCH_S3C2410
help
This option enables support for LEDs connected to GPIO lines
on Samsung S3C24XX series CPUs, such as the S3C2410 and S3C2440.
config LEDS_AMS_DELTA
tristate "LED Support for the Amstrad Delta (E3)"
- depends on LEDS_CLASS && MACH_AMS_DELTA
+ depends on MACH_AMS_DELTA
help
This option enables support for the LEDs on Amstrad Delta (E3).
config LEDS_NET48XX
tristate "LED Support for Soekris net48xx series Error LED"
- depends on LEDS_CLASS && SCx200_GPIO
+ depends on SCx200_GPIO
help
This option enables support for the Soekris net4801 and net4826 error
LED.
config LEDS_FSG
tristate "LED Support for the Freecom FSG-3"
- depends on LEDS_CLASS && MACH_FSG
+ depends on MACH_FSG
help
This option enables support for the LEDs on the Freecom FSG-3.
config LEDS_WRAP
tristate "LED Support for the WRAP series LEDs"
- depends on LEDS_CLASS && SCx200_GPIO
+ depends on SCx200_GPIO
help
This option enables support for the PCEngines WRAP programmable LEDs.
config LEDS_ALIX2
tristate "LED Support for ALIX.2 and ALIX.3 series"
- depends on LEDS_CLASS && X86 && EXPERIMENTAL
+ depends on X86 && !GPIO_CS5535 && !CS5535_GPIO
help
This option enables support for the PCEngines ALIX.2 and ALIX.3 LEDs.
You have to set leds-alix2.force=1 for boards with Award BIOS.
config LEDS_H1940
tristate "LED Support for iPAQ H1940 device"
- depends on LEDS_CLASS && ARCH_H1940
+ depends on ARCH_H1940
help
This option enables support for the LEDs on the h1940.
config LEDS_COBALT_QUBE
tristate "LED Support for the Cobalt Qube series front LED"
- depends on LEDS_CLASS && MIPS_COBALT
+ depends on MIPS_COBALT
help
This option enables support for the front LED on Cobalt Qube series
@@ -105,7 +107,7 @@ config LEDS_COBALT_RAQ
config LEDS_SUNFIRE
tristate "LED support for SunFire servers."
- depends on LEDS_CLASS && SPARC64
+ depends on SPARC64
select LEDS_TRIGGERS
help
This option enables support for the Left, Middle, and Right
@@ -113,14 +115,14 @@ config LEDS_SUNFIRE
config LEDS_HP6XX
tristate "LED Support for the HP Jornada 6xx"
- depends on LEDS_CLASS && SH_HP6XX
+ depends on SH_HP6XX
help
This option enables LED support for the handheld
HP Jornada 620/660/680/690.
config LEDS_PCA9532
tristate "LED driver for PCA9532 dimmer"
- depends on LEDS_CLASS && I2C && INPUT && EXPERIMENTAL
+ depends on I2C && INPUT && EXPERIMENTAL
help
This option enables support for NXP pca9532
LED controller. It is generally only useful
@@ -128,7 +130,7 @@ config LEDS_PCA9532
config LEDS_GPIO
tristate "LED Support for GPIO connected LEDs"
- depends on LEDS_CLASS && GENERIC_GPIO
+ depends on GENERIC_GPIO
help
This option enables support for the LEDs connected to GPIO
outputs. To be useful the particular board must have LEDs
@@ -155,7 +157,7 @@ config LEDS_GPIO_OF
config LEDS_LP3944
tristate "LED Support for N.S. LP3944 (Fun Light) I2C chip"
- depends on LEDS_CLASS && I2C
+ depends on I2C
help
This option enables support for LEDs connected to the National
Semiconductor LP3944 Lighting Management Unit (LMU) also known as
@@ -166,7 +168,7 @@ config LEDS_LP3944
config LEDS_CLEVO_MAIL
tristate "Mail LED on Clevo notebook"
- depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI
+ depends on X86 && SERIO_I8042 && DMI
help
This driver makes the mail LED accessible from userspace
programs through the leds subsystem. This LED have three
@@ -196,7 +198,7 @@ config LEDS_CLEVO_MAIL
config LEDS_PCA955X
tristate "LED Support for PCA955x I2C chips"
- depends on LEDS_CLASS && I2C
+ depends on I2C
help
This option enables support for LEDs connected to PCA955x
LED driver chips accessed via the I2C bus. Supported
@@ -204,54 +206,54 @@ config LEDS_PCA955X
config LEDS_WM831X_STATUS
tristate "LED support for status LEDs on WM831x PMICs"
- depends on LEDS_CLASS && MFD_WM831X
+ depends on MFD_WM831X
help
This option enables support for the status LEDs of the WM831x
series of PMICs.
config LEDS_WM8350
tristate "LED Support for WM8350 AudioPlus PMIC"
- depends on LEDS_CLASS && MFD_WM8350
+ depends on MFD_WM8350
help
This option enables support for LEDs driven by the Wolfson
Microelectronics WM8350 AudioPlus PMIC.
config LEDS_DA903X
tristate "LED Support for DA9030/DA9034 PMIC"
- depends on LEDS_CLASS && PMIC_DA903X
+ depends on PMIC_DA903X
help
This option enables support for on-chip LED drivers found
on Dialog Semiconductor DA9030/DA9034 PMICs.
config LEDS_DAC124S085
tristate "LED Support for DAC124S085 SPI DAC"
- depends on LEDS_CLASS && SPI
+ depends on SPI
help
This option enables support for DAC124S085 SPI DAC from NatSemi,
which can be used to control up to four LEDs.
config LEDS_PWM
tristate "PWM driven LED Support"
- depends on LEDS_CLASS && HAVE_PWM
+ depends on HAVE_PWM
help
This option enables support for pwm driven LEDs
config LEDS_REGULATOR
tristate "REGULATOR driven LED support"
- depends on LEDS_CLASS && REGULATOR
+ depends on REGULATOR
help
This option enables support for regulator driven LEDs.
config LEDS_BD2802
tristate "LED driver for BD2802 RGB LED"
- depends on LEDS_CLASS && I2C
+ depends on I2C
help
This option enables support for BD2802GU RGB LED driver chips
accessed via the I2C bus.
config LEDS_INTEL_SS4200
tristate "LED driver for Intel NAS SS4200 series"
- depends on LEDS_CLASS && PCI && DMI
+ depends on PCI && DMI
help
This option enables support for the Intel SS4200 series of
Network Attached Storage servers. You may control the hard
@@ -260,7 +262,7 @@ config LEDS_INTEL_SS4200
config LEDS_LT3593
tristate "LED driver for LT3593 controllers"
- depends on LEDS_CLASS && GENERIC_GPIO
+ depends on GENERIC_GPIO
help
This option enables support for LEDs driven by a Linear Technology
LT3593 controller. This controller uses a special one-wire pulse
@@ -268,7 +270,7 @@ config LEDS_LT3593
config LEDS_ADP5520
tristate "LED Support for ADP5520/ADP5501 PMIC"
- depends on LEDS_CLASS && PMIC_ADP5520
+ depends on PMIC_ADP5520
help
This option enables support for on-chip LED drivers found
on Analog Devices ADP5520/ADP5501 PMICs.
@@ -276,7 +278,12 @@ config LEDS_ADP5520
To compile this driver as a module, choose M here: the module will
be called leds-adp5520.
-comment "LED Triggers"
+config LEDS_DELL_NETBOOKS
+ tristate "External LED on Dell Business Netbooks"
+ depends on X86 && ACPI_WMI
+ help
+ This adds support for the Latitude 2100 and similar
+ notebooks that have an external LED.
config LEDS_TRIGGERS
bool "LED Trigger support"
@@ -285,9 +292,12 @@ config LEDS_TRIGGERS
These triggers allow kernel events to drive the LEDs and can
be configured via sysfs. If unsure, say Y.
+if LEDS_TRIGGERS
+
+comment "LED Triggers"
+
config LEDS_TRIGGER_TIMER
tristate "LED Timer Trigger"
- depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a programmable timer
via sysfs. Some LED hardware can be programmed to start
@@ -298,14 +308,13 @@ config LEDS_TRIGGER_TIMER
config LEDS_TRIGGER_IDE_DISK
bool "LED IDE Disk Trigger"
- depends on LEDS_TRIGGERS && IDE_GD_ATA
+ depends on IDE_GD_ATA
help
This allows LEDs to be controlled by IDE disk activity.
If unsure, say Y.
config LEDS_TRIGGER_HEARTBEAT
tristate "LED Heartbeat Trigger"
- depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled by a CPU load average.
The flash frequency is a hyperbolic function of the 1-minute
@@ -314,7 +323,6 @@ config LEDS_TRIGGER_HEARTBEAT
config LEDS_TRIGGER_BACKLIGHT
tristate "LED backlight Trigger"
- depends on LEDS_TRIGGERS
help
This allows LEDs to be controlled as a backlight device: they
turn off and on when the display is blanked and unblanked.
@@ -323,7 +331,6 @@ config LEDS_TRIGGER_BACKLIGHT
config LEDS_TRIGGER_GPIO
tristate "LED GPIO Trigger"
- depends on LEDS_TRIGGERS
depends on GPIOLIB
help
This allows LEDs to be controlled by gpio events. It's good
@@ -336,7 +343,6 @@ config LEDS_TRIGGER_GPIO
config LEDS_TRIGGER_DEFAULT_ON
tristate "LED Default ON Trigger"
- depends on LEDS_TRIGGERS
help
This allows LEDs to be initialised in the ON state.
If unsure, say Y.
@@ -344,4 +350,8 @@ config LEDS_TRIGGER_DEFAULT_ON
comment "iptables trigger is under Netfilter config (LED target)"
depends on LEDS_TRIGGERS
+endif # LEDS_TRIGGERS
+
+endif # LEDS_CLASS
+
endif # NEW_LEDS
diff --git a/drivers/leds/Makefile b/drivers/leds/Makefile
index d76fb32b77c0..0cd8b9957380 100644
--- a/drivers/leds/Makefile
+++ b/drivers/leds/Makefile
@@ -34,6 +34,7 @@ obj-$(CONFIG_LEDS_REGULATOR) += leds-regulator.o
obj-$(CONFIG_LEDS_INTEL_SS4200) += leds-ss4200.o
obj-$(CONFIG_LEDS_LT3593) += leds-lt3593.o
obj-$(CONFIG_LEDS_ADP5520) += leds-adp5520.o
+obj-$(CONFIG_LEDS_DELL_NETBOOKS) += dell-led.o
# LED SPI Drivers
obj-$(CONFIG_LEDS_DAC124S085) += leds-dac124s085.o
diff --git a/drivers/leds/dell-led.c b/drivers/leds/dell-led.c
new file mode 100644
index 000000000000..ee310891fff8
--- /dev/null
+++ b/drivers/leds/dell-led.c
@@ -0,0 +1,200 @@
+/*
+ * dell_led.c - Dell LED Driver
+ *
+ * Copyright (C) 2010 Dell Inc.
+ * Louis Davis <louis_davis@dell.com>
+ * Jim Dailey <jim_dailey@dell.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/acpi.h>
+#include <linux/leds.h>
+
+MODULE_AUTHOR("Louis Davis/Jim Dailey");
+MODULE_DESCRIPTION("Dell LED Control Driver");
+MODULE_LICENSE("GPL");
+
+#define DELL_LED_BIOS_GUID "F6E4FE6E-909D-47cb-8BAB-C9F6F2F8D396"
+MODULE_ALIAS("wmi:" DELL_LED_BIOS_GUID);
+
+/* Error Result Codes: */
+#define INVALID_DEVICE_ID 250
+#define INVALID_PARAMETER 251
+#define INVALID_BUFFER 252
+#define INTERFACE_ERROR 253
+#define UNSUPPORTED_COMMAND 254
+#define UNSPECIFIED_ERROR 255
+
+/* Device ID */
+#define DEVICE_ID_PANEL_BACK 1
+
+/* LED Commands */
+#define CMD_LED_ON 16
+#define CMD_LED_OFF 17
+#define CMD_LED_BLINK 18
+
+struct bios_args {
+ unsigned char length;
+ unsigned char result_code;
+ unsigned char device_id;
+ unsigned char command;
+ unsigned char on_time;
+ unsigned char off_time;
+};
+
+static int dell_led_perform_fn(u8 length,
+ u8 result_code,
+ u8 device_id,
+ u8 command,
+ u8 on_time,
+ u8 off_time)
+{
+ struct bios_args *bios_return;
+ u8 return_code;
+ union acpi_object *obj;
+ struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER, NULL };
+ struct acpi_buffer input;
+ acpi_status status;
+
+ struct bios_args args;
+ args.length = length;
+ args.result_code = result_code;
+ args.device_id = device_id;
+ args.command = command;
+ args.on_time = on_time;
+ args.off_time = off_time;
+
+ input.length = sizeof(struct bios_args);
+ input.pointer = &args;
+
+ status = wmi_evaluate_method(DELL_LED_BIOS_GUID,
+ 1,
+ 1,
+ &input,
+ &output);
+
+ if (ACPI_FAILURE(status))
+ return status;
+
+ obj = output.pointer;
+
+ if (!obj)
+ return -EINVAL;
+ else if (obj->type != ACPI_TYPE_BUFFER) {
+ kfree(obj);
+ return -EINVAL;
+ }
+
+ bios_return = ((struct bios_args *)obj->buffer.pointer);
+ return_code = bios_return->result_code;
+
+ kfree(obj);
+
+ return return_code;
+}
+
+static int led_on(void)
+{
+ return dell_led_perform_fn(3, /* Length of command */
+ INTERFACE_ERROR, /* Init to INTERFACE_ERROR */
+ DEVICE_ID_PANEL_BACK, /* Device ID */
+ CMD_LED_ON, /* Command */
+ 0, /* not used */
+ 0); /* not used */
+}
+
+static int led_off(void)
+{
+ return dell_led_perform_fn(3, /* Length of command */
+ INTERFACE_ERROR, /* Init to INTERFACE_ERROR */
+ DEVICE_ID_PANEL_BACK, /* Device ID */
+ CMD_LED_OFF, /* Command */
+ 0, /* not used */
+ 0); /* not used */
+}
+
+static int led_blink(unsigned char on_eighths,
+ unsigned char off_eighths)
+{
+ return dell_led_perform_fn(5, /* Length of command */
+ INTERFACE_ERROR, /* Init to INTERFACE_ERROR */
+ DEVICE_ID_PANEL_BACK, /* Device ID */
+ CMD_LED_BLINK, /* Command */
+ on_eighths, /* blink on in eigths of a second */
+ off_eighths); /* blink off in eights of a second */
+}
+
+static void dell_led_set(struct led_classdev *led_cdev,
+ enum led_brightness value)
+{
+ if (value == LED_OFF)
+ led_off();
+ else
+ led_on();
+}
+
+static int dell_led_blink(struct led_classdev *led_cdev,
+ unsigned long *delay_on,
+ unsigned long *delay_off)
+{
+ unsigned long on_eighths;
+ unsigned long off_eighths;
+
+ /* The Dell LED delay is based on 125ms intervals.
+ Need to round up to next interval. */
+
+ on_eighths = (*delay_on + 124) / 125;
+ if (0 == on_eighths)
+ on_eighths = 1;
+ if (on_eighths > 255)
+ on_eighths = 255;
+ *delay_on = on_eighths * 125;
+
+ off_eighths = (*delay_off + 124) / 125;
+ if (0 == off_eighths)
+ off_eighths = 1;
+ if (off_eighths > 255)
+ off_eighths = 255;
+ *delay_off = off_eighths * 125;
+
+ led_blink(on_eighths, off_eighths);
+
+ return 0;
+}
+
+static struct led_classdev dell_led = {
+ .name = "dell::lid",
+ .brightness = LED_OFF,
+ .max_brightness = 1,
+ .brightness_set = dell_led_set,
+ .blink_set = dell_led_blink,
+ .flags = LED_CORE_SUSPENDRESUME,
+};
+
+static int __init dell_led_init(void)
+{
+ int error = 0;
+
+ if (!wmi_has_guid(DELL_LED_BIOS_GUID))
+ return -ENODEV;
+
+ error = led_off();
+ if (error != 0)
+ return -ENODEV;
+
+ return led_classdev_register(NULL, &dell_led);
+}
+
+static void __exit dell_led_exit(void)
+{
+ led_classdev_unregister(&dell_led);
+
+ led_off();
+}
+
+module_init(dell_led_init);
+module_exit(dell_led_exit);
diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c
index 782f95822eab..69e7d86a5143 100644
--- a/drivers/leds/led-class.c
+++ b/drivers/leds/led-class.c
@@ -72,11 +72,14 @@ static ssize_t led_max_brightness_show(struct device *dev,
return sprintf(buf, "%u\n", led_cdev->max_brightness);
}
-static DEVICE_ATTR(brightness, 0644, led_brightness_show, led_brightness_store);
-static DEVICE_ATTR(max_brightness, 0444, led_max_brightness_show, NULL);
+static struct device_attribute led_class_attrs[] = {
+ __ATTR(brightness, 0644, led_brightness_show, led_brightness_store),
+ __ATTR(max_brightness, 0644, led_max_brightness_show, NULL),
#ifdef CONFIG_LEDS_TRIGGERS
-static DEVICE_ATTR(trigger, 0644, led_trigger_show, led_trigger_store);
+ __ATTR(trigger, 0644, led_trigger_show, led_trigger_store),
#endif
+ __ATTR_NULL,
+};
/**
* led_classdev_suspend - suspend an led_classdev.
@@ -127,18 +130,11 @@ static int led_resume(struct device *dev)
*/
int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
{
- int rc;
-
led_cdev->dev = device_create(leds_class, parent, 0, led_cdev,
"%s", led_cdev->name);
if (IS_ERR(led_cdev->dev))
return PTR_ERR(led_cdev->dev);
- /* register the attributes */
- rc = device_create_file(led_cdev->dev, &dev_attr_brightness);
- if (rc)
- goto err_out;
-
#ifdef CONFIG_LEDS_TRIGGERS
init_rwsem(&led_cdev->trigger_lock);
#endif
@@ -150,36 +146,18 @@ int led_classdev_register(struct device *parent, struct led_classdev *led_cdev)
if (!led_cdev->max_brightness)
led_cdev->max_brightness = LED_FULL;
- rc = device_create_file(led_cdev->dev, &dev_attr_max_brightness);
- if (rc)
- goto err_out_attr_max;
-
led_update_brightness(led_cdev);
#ifdef CONFIG_LEDS_TRIGGERS
- rc = device_create_file(led_cdev->dev, &dev_attr_trigger);
- if (rc)
- goto err_out_led_list;
-
led_trigger_set_default(led_cdev);
#endif
- printk(KERN_INFO "Registered led device: %s\n",
+ printk(KERN_DEBUG "Registered led device: %s\n",
led_cdev->name);
return 0;
-
-#ifdef CONFIG_LEDS_TRIGGERS
-err_out_led_list:
- device_remove_file(led_cdev->dev, &dev_attr_max_brightness);
-#endif
-err_out_attr_max:
- device_remove_file(led_cdev->dev, &dev_attr_brightness);
- list_del(&led_cdev->node);
-err_out:
- device_unregister(led_cdev->dev);
- return rc;
}
+
EXPORT_SYMBOL_GPL(led_classdev_register);
/**
@@ -190,10 +168,7 @@ EXPORT_SYMBOL_GPL(led_classdev_register);
*/
void led_classdev_unregister(struct led_classdev *led_cdev)
{
- device_remove_file(led_cdev->dev, &dev_attr_max_brightness);
- device_remove_file(led_cdev->dev, &dev_attr_brightness);
#ifdef CONFIG_LEDS_TRIGGERS
- device_remove_file(led_cdev->dev, &dev_attr_trigger);
down_write(&led_cdev->trigger_lock);
if (led_cdev->trigger)
led_trigger_set(led_cdev, NULL);
@@ -215,6 +190,7 @@ static int __init leds_init(void)
return PTR_ERR(leds_class);
leds_class->suspend = led_suspend;
leds_class->resume = led_resume;
+ leds_class->dev_attrs = led_class_attrs;
return 0;
}
diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index e5225d28f392..0823e2622e8c 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -211,7 +211,6 @@ static int __devinit of_gpio_leds_probe(struct of_device *ofdev,
const struct of_device_id *match)
{
struct device_node *np = ofdev->node, *child;
- struct gpio_led led;
struct gpio_led_of_platform_data *pdata;
int count = 0, ret;
@@ -226,8 +225,8 @@ static int __devinit of_gpio_leds_probe(struct of_device *ofdev,
if (!pdata)
return -ENOMEM;
- memset(&led, 0, sizeof(led));
for_each_child_of_node(np, child) {
+ struct gpio_led led = {};
enum of_gpio_flags flags;
const char *state;
diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c
index 97f04984c1ca..51477ec71391 100644
--- a/drivers/leds/leds-ss4200.c
+++ b/drivers/leds/leds-ss4200.c
@@ -63,7 +63,7 @@ MODULE_LICENSE("GPL");
/*
* PCI ID of the Intel ICH7 LPC Device within which the GPIO block lives.
*/
-static struct pci_device_id ich7_lpc_pci_id[] =
+static const struct pci_device_id ich7_lpc_pci_id[] =
{
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0) },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1) },