Re: zaurus: cleanup sharpsl_pm.c
From: Pavel Machek
Date: Sun Oct 18 2009 - 14:00:48 EST
On Tue 2009-10-06 22:03:39, Pavel Machek wrote:
> This fixes checkpatch/style problems in sharpsl_pm.c, allowing me to
> submit real fixes next. Move spitz-specific voltage table to
> spitz-specific file.
>
> Signed-off-by: Pavel Machek <pavel@xxxxxx>
Eric, any news on this one? I have real development going on top of
this one, so it is quite important for me...
Pavel
> --- linux-rc/arch/arm.ofic/mach-pxa/sharpsl.h 2009-09-10 00:13:59.000000000 +0200
> +++ linux-rc/arch/arm/mach-pxa/sharpsl.h 2009-10-06 21:15:40.000000000 +0200
> @@ -42,8 +42,6 @@
> #define MAX1111_BATT_TEMP 2u
> #define MAX1111_ACIN_VOLT 6u
>
> -extern struct battery_thresh spitz_battery_levels_acin[];
> -extern struct battery_thresh spitz_battery_levels_noac[];
> int sharpsl_pm_pxa_read_max1111(int channel);
>
>
> diff -ur linux-rc/arch/arm.ofic/mach-pxa/sharpsl_pm.c linux-rc/arch/arm/mach-pxa/sharpsl_pm.c
> --- linux-rc/arch/arm.ofic/mach-pxa/sharpsl_pm.c 2009-10-06 13:48:07.000000000 +0200
> +++ linux-rc/arch/arm/mach-pxa/sharpsl_pm.c 2009-10-06 21:15:40.000000000 +0200
> @@ -78,106 +78,21 @@
>
>
>
> -struct battery_thresh spitz_battery_levels_acin[] = {
> - { 213, 100},
> - { 212, 98},
> - { 211, 95},
> - { 210, 93},
> - { 209, 90},
> - { 208, 88},
> - { 207, 85},
> - { 206, 83},
> - { 205, 80},
> - { 204, 78},
> - { 203, 75},
> - { 202, 73},
> - { 201, 70},
> - { 200, 68},
> - { 199, 65},
> - { 198, 63},
> - { 197, 60},
> - { 196, 58},
> - { 195, 55},
> - { 194, 53},
> - { 193, 50},
> - { 192, 48},
> - { 192, 45},
> - { 191, 43},
> - { 191, 40},
> - { 190, 38},
> - { 190, 35},
> - { 189, 33},
> - { 188, 30},
> - { 187, 28},
> - { 186, 25},
> - { 185, 23},
> - { 184, 20},
> - { 183, 18},
> - { 182, 15},
> - { 181, 13},
> - { 180, 10},
> - { 179, 8},
> - { 178, 5},
> - { 0, 0},
> -};
> -
> -struct battery_thresh spitz_battery_levels_noac[] = {
> - { 213, 100},
> - { 212, 98},
> - { 211, 95},
> - { 210, 93},
> - { 209, 90},
> - { 208, 88},
> - { 207, 85},
> - { 206, 83},
> - { 205, 80},
> - { 204, 78},
> - { 203, 75},
> - { 202, 73},
> - { 201, 70},
> - { 200, 68},
> - { 199, 65},
> - { 198, 63},
> - { 197, 60},
> - { 196, 58},
> - { 195, 55},
> - { 194, 53},
> - { 193, 50},
> - { 192, 48},
> - { 191, 45},
> - { 190, 43},
> - { 189, 40},
> - { 188, 38},
> - { 187, 35},
> - { 186, 33},
> - { 185, 30},
> - { 184, 28},
> - { 183, 25},
> - { 182, 23},
> - { 181, 20},
> - { 180, 18},
> - { 179, 15},
> - { 178, 13},
> - { 177, 10},
> - { 176, 8},
> - { 175, 5},
> - { 0, 0},
> -};
> -
> /* MAX1111 Commands */
> -#define MAXCTRL_PD0 1u << 0
> -#define MAXCTRL_PD1 1u << 1
> -#define MAXCTRL_SGL 1u << 2
> -#define MAXCTRL_UNI 1u << 3
> +#define MAXCTRL_PD0 (1u << 0)
> +#define MAXCTRL_PD1 (1u << 1)
> +#define MAXCTRL_SGL (1u << 2)
> +#define MAXCTRL_UNI (1u << 3)
> #define MAXCTRL_SEL_SH 4
> -#define MAXCTRL_STR 1u << 7
> +#define MAXCTRL_STR (1u << 7)
>
> /*
> * Read MAX1111 ADC
> */
> int sharpsl_pm_pxa_read_max1111(int channel)
> {
> - if (machine_is_tosa()) // Ugly, better move this function into another module
> + /* Ugly, better move this function into another module */
> + if (machine_is_tosa())
> return 0;
>
> #ifdef CONFIG_CORGI_SSP_DEPRECATED
> @@ -238,7 +153,7 @@
>
> static void sharpsl_battery_thread(struct work_struct *private_)
> {
> - int voltage, percent, apm_status, i = 0;
> + int voltage, percent, apm_status, i;
>
> if (!sharpsl_pm.machinfo)
> return;
> @@ -250,15 +165,14 @@
> && time_after(jiffies, sharpsl_pm.charge_start_time + SHARPSL_CHARGE_ON_TIME_INTERVAL))
> schedule_delayed_work(&toggle_charger, 0);
>
> - while(1) {
> + for (i = 0; i < 5; i++) {
> voltage = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
> -
> - if (voltage > 0) break;
> - if (i++ > 5) {
> - voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
> - dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
> + if (voltage > 0)
> break;
> - }
> + }
> + if (voltage <= 0) {
> + voltage = sharpsl_pm.machinfo->bat_levels_noac[0].voltage;
> + dev_warn(sharpsl_pm.dev, "Warning: Cannot read main battery!\n");
> }
>
> voltage = sharpsl_average_value(voltage);
> @@ -266,8 +180,10 @@
> percent = get_percentage(voltage);
>
> /* At low battery voltages, the voltage has a tendency to start
> - creeping back up so we try to avoid this here */
> - if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE) || (apm_status == APM_BATTERY_STATUS_HIGH) || percent <= sharpsl_pm.battstat.mainbat_percent) {
> + creeping back up so we try to avoid this here */
> + if ((sharpsl_pm.battstat.ac_status == APM_AC_ONLINE)
> + || (apm_status == APM_BATTERY_STATUS_HIGH)
> + || percent <= sharpsl_pm.battstat.mainbat_percent) {
> sharpsl_pm.battstat.mainbat_voltage = voltage;
> sharpsl_pm.battstat.mainbat_status = apm_status;
> sharpsl_pm.battstat.mainbat_percent = percent;
> @@ -279,8 +195,8 @@
> #ifdef CONFIG_BACKLIGHT_CORGI
> /* If battery is low. limit backlight intensity to save power. */
> if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
> - && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW) ||
> - (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
> + && ((sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_LOW)
> + || (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL))) {
> if (!(sharpsl_pm.flags & SHARPSL_BL_LIMIT)) {
> sharpsl_pm.machinfo->backlight_limit(1);
> sharpsl_pm.flags |= SHARPSL_BL_LIMIT;
> @@ -293,8 +209,8 @@
>
> /* Suspend if critical battery level */
> if ((sharpsl_pm.battstat.ac_status != APM_AC_ONLINE)
> - && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
> - && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
> + && (sharpsl_pm.battstat.mainbat_status == APM_BATTERY_STATUS_CRITICAL)
> + && !(sharpsl_pm.flags & SHARPSL_APM_QUEUED)) {
> sharpsl_pm.flags |= SHARPSL_APM_QUEUED;
> dev_err(sharpsl_pm.dev, "Fatal Off\n");
> apm_queue_event(APM_CRITICAL_SUSPEND);
> @@ -346,7 +264,7 @@
>
> static void sharpsl_charge_toggle(struct work_struct *private_)
> {
> - dev_dbg(sharpsl_pm.dev, "Toogling Charger at time: %lx\n", jiffies);
> + dev_dbg(sharpsl_pm.dev, "Toggling Charger at time: %lx\n", jiffies);
>
> if (!sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN)) {
> sharpsl_charge_off();
> @@ -368,7 +286,7 @@
> {
> int acin = sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN);
>
> - dev_dbg(sharpsl_pm.dev, "AC Status: %d\n",acin);
> + dev_dbg(sharpsl_pm.dev, "AC Status: %d\n", acin);
>
> sharpsl_average_clear();
> if (acin && (sharpsl_pm.charge_mode != CHRG_ON))
> @@ -472,14 +390,14 @@
> sharpsl_ad[sharpsl_ad_index] = ad;
> sharpsl_ad_index++;
> if (sharpsl_ad_index >= SHARPSL_CNV_VALUE_NUM) {
> - for (i=0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
> + for (i = 0; i < (SHARPSL_CNV_VALUE_NUM-1); i++)
> sharpsl_ad[i] = sharpsl_ad[i+1];
> sharpsl_ad_index = SHARPSL_CNV_VALUE_NUM - 1;
> }
> - for (i=0; i < sharpsl_ad_index; i++)
> + for (i = 0; i < sharpsl_ad_index; i++)
> ad_val += sharpsl_ad[i];
>
> - return (ad_val / sharpsl_ad_index);
> + return ad_val / sharpsl_ad_index;
> }
>
> /*
> @@ -492,8 +410,8 @@
>
> /* Find MAX val */
> temp = val[0];
> - j=0;
> - for (i=1; i<5; i++) {
> + j = 0;
> + for (i = 1; i < 5; i++) {
> if (temp < val[i]) {
> temp = val[i];
> j = i;
> @@ -502,21 +420,21 @@
>
> /* Find MIN val */
> temp = val[4];
> - k=4;
> - for (i=3; i>=0; i--) {
> + k = 4;
> + for (i = 3; i >= 0; i--) {
> if (temp > val[i]) {
> temp = val[i];
> k = i;
> }
> }
>
> - for (i=0; i<5; i++)
> - if (i != j && i != k )
> + for (i = 0; i < 5; i++)
> + if (i != j && i != k)
> sum += val[i];
>
> dev_dbg(sharpsl_pm.dev, "Average: %d from values: %d, %d, %d, %d, %d\n", sum/3, val[0], val[1], val[2], val[3], val[4]);
>
> - return (sum/3);
> + return sum/3;
> }
>
> static int sharpsl_check_battery_temp(void)
> @@ -524,7 +442,7 @@
> int val, i, buff[5];
>
> /* Check battery temperature */
> - for (i=0; i<5; i++) {
> + for (i = 0; i < 5; i++) {
> mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
> sharpsl_pm.machinfo->measure_temp(1);
> mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_TEMP);
> @@ -557,7 +477,7 @@
> sharpsl_pm.machinfo->discharge1(1);
>
> /* Check battery voltage */
> - for (i=0; i<5; i++) {
> + for (i = 0; i < 5; i++) {
> buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
> mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
> }
> @@ -581,16 +501,16 @@
> {
> int temp, i, buff[5];
>
> - for (i=0; i<5; i++) {
> + for (i = 0; i < 5; i++) {
> buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_ACIN_VOLT);
> mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_ACIN);
> }
>
> temp = get_select_val(buff);
> - dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n",temp);
> + dev_dbg(sharpsl_pm.dev, "AC Voltage: %d\n", temp);
>
> if ((temp > sharpsl_pm.machinfo->charge_acin_high) || (temp < sharpsl_pm.machinfo->charge_acin_low)) {
> - dev_err(sharpsl_pm.dev, "Error: AC check failed.\n");
> + dev_err(sharpsl_pm.dev, "Error: AC check failed: voltage %d.\n", temp);
> return -1;
> }
>
> @@ -624,9 +544,9 @@
>
> static void corgi_goto_sleep(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
> {
> - dev_dbg(sharpsl_pm.dev, "Time is: %08x\n",RCNR);
> + dev_dbg(sharpsl_pm.dev, "Time is: %08x\n", RCNR);
>
> - dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n",sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
> + dev_dbg(sharpsl_pm.dev, "Offline Charge Activate = %d\n", sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG);
> /* not charging and AC-IN! */
>
> if ((sharpsl_pm.flags & SHARPSL_DO_OFFLINE_CHRG) && (sharpsl_pm.machinfo->read_devdata(SHARPSL_STATUS_ACIN))) {
> @@ -644,12 +564,12 @@
> if ((sharpsl_pm.charge_mode == CHRG_ON) && ((alarm_enable && ((alarm_time - RCNR) > (SHARPSL_BATCHK_TIME_SUSPEND + 30))) || !alarm_enable)) {
> RTSR &= RTSR_ALE;
> RTAR = RCNR + SHARPSL_BATCHK_TIME_SUSPEND;
> - dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n",RTAR);
> + dev_dbg(sharpsl_pm.dev, "Charging alarm at: %08x\n", RTAR);
> sharpsl_pm.flags |= SHARPSL_ALARM_ACTIVE;
> } else if (alarm_enable) {
> RTSR &= RTSR_ALE;
> RTAR = alarm_time;
> - dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n",RTAR);
> + dev_dbg(sharpsl_pm.dev, "User alarm at: %08x\n", RTAR);
> } else {
> dev_dbg(sharpsl_pm.dev, "No alarms set.\n");
> }
> @@ -658,19 +578,18 @@
>
> sharpsl_pm.machinfo->postsuspend();
>
> - dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n",PEDR);
> + dev_dbg(sharpsl_pm.dev, "Corgi woken up from suspend: %08x\n", PEDR);
> }
>
> static int corgi_enter_suspend(unsigned long alarm_time, unsigned int alarm_enable, suspend_state_t state)
> {
> - if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable) )
> - {
> + if (!sharpsl_pm.machinfo->should_wakeup(!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE) && alarm_enable)) {
> if (!(sharpsl_pm.flags & SHARPSL_ALARM_ACTIVE)) {
> dev_dbg(sharpsl_pm.dev, "No user triggered wakeup events and not charging. Strange. Suspend.\n");
> corgi_goto_sleep(alarm_time, alarm_enable, state);
> return 1;
> }
> - if(sharpsl_off_charge_battery()) {
> + if (sharpsl_off_charge_battery()) {
> dev_dbg(sharpsl_pm.dev, "Charging. Suspend...\n");
> corgi_goto_sleep(alarm_time, alarm_enable, state);
> return 1;
> @@ -697,7 +616,7 @@
>
> corgi_goto_sleep(alarm_time, alarm_status, state);
>
> - while (corgi_enter_suspend(alarm_time,alarm_status,state))
> + while (corgi_enter_suspend(alarm_time, alarm_status, state))
> {}
>
> if (sharpsl_pm.machinfo->earlyresume)
> @@ -732,7 +651,7 @@
> sharpsl_pm.machinfo->discharge1(1);
>
> /* Check battery : check inserting battery ? */
> - for (i=0; i<5; i++) {
> + for (i = 0; i < 5; i++) {
> buff[i] = sharpsl_pm.machinfo->read_devdata(SHARPSL_BATT_VOLT);
> mdelay(SHARPSL_CHECK_BATTERY_WAIT_TIME_VOLT);
> }
> @@ -812,7 +731,7 @@
> mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
>
> time = RCNR;
> - while(1) {
> + while (1) {
> /* Check if any wakeup event had occurred */
> if (sharpsl_pm.machinfo->charger_wakeup() != 0)
> return 0;
> @@ -835,9 +754,9 @@
> mdelay(SHARPSL_CHARGE_CO_CHECK_TIME);
>
> time = RCNR;
> - while(1) {
> + while (1) {
> /* Check if any wakeup event had occurred */
> - if (sharpsl_pm.machinfo->charger_wakeup() != 0)
> + if (sharpsl_pm.machinfo->charger_wakeup())
> return 0;
> /* Check for timeout */
> if ((RCNR-time) > SHARPSL_WAIT_CO_TIME) {
> @@ -864,12 +783,12 @@
>
> static ssize_t battery_percentage_show(struct device *dev, struct device_attribute *attr, char *buf)
> {
> - return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_percent);
> + return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_percent);
> }
>
> static ssize_t battery_voltage_show(struct device *dev, struct device_attribute *attr, char *buf)
> {
> - return sprintf(buf, "%d\n",sharpsl_pm.battstat.mainbat_voltage);
> + return sprintf(buf, "%d\n", sharpsl_pm.battstat.mainbat_voltage);
> }
>
> static DEVICE_ATTR(battery_percentage, 0444, battery_percentage_show, NULL);
> @@ -943,8 +862,7 @@
> }
> }
>
> - if (sharpsl_pm.machinfo->batfull_irq)
> - {
> + if (sharpsl_pm.machinfo->batfull_irq) {
> /* Register interrupt handler. */
> if (request_irq(IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull), sharpsl_chrg_full_isr, IRQF_DISABLED | IRQF_TRIGGER_RISING, "CO", sharpsl_chrg_full_isr)) {
> dev_err(sharpsl_pm.dev, "Could not get irq %d.\n", IRQ_GPIO(sharpsl_pm.machinfo->gpio_batfull));
> --- linux-rc/arch/arm.ofic/mach-pxa/spitz_pm.c 2009-09-10 00:13:59.000000000 +0200
> +++ linux-rc/arch/arm/mach-pxa/spitz_pm.c 2009-10-06 21:15:40.000000000 +0200
> @@ -37,6 +37,93 @@
>
> static int spitz_last_ac_status;
>
> +static const struct battery_thresh spitz_battery_levels_acin[] = {
> + { 213, 100},
> + { 212, 98},
> + { 211, 95},
> + { 210, 93},
> + { 209, 90},
> + { 208, 88},
> + { 207, 85},
> + { 206, 83},
> + { 205, 80},
> + { 204, 78},
> + { 203, 75},
> + { 202, 73},
> + { 201, 70},
> + { 200, 68},
> + { 199, 65},
> + { 198, 63},
> + { 197, 60},
> + { 196, 58},
> + { 195, 55},
> + { 194, 53},
> + { 193, 50},
> + { 192, 48},
> + { 192, 45},
> + { 191, 43},
> + { 191, 40},
> + { 190, 38},
> + { 190, 35},
> + { 189, 33},
> + { 188, 30},
> + { 187, 28},
> + { 186, 25},
> + { 185, 23},
> + { 184, 20},
> + { 183, 18},
> + { 182, 15},
> + { 181, 13},
> + { 180, 10},
> + { 179, 8},
> + { 178, 5},
> + { 0, 0},
> +};
> +
> +static const struct battery_thresh spitz_battery_levels_noac[] = {
> + { 213, 100},
> + { 212, 98},
> + { 211, 95},
> + { 210, 93},
> + { 209, 90},
> + { 208, 88},
> + { 207, 85},
> + { 206, 83},
> + { 205, 80},
> + { 204, 78},
> + { 203, 75},
> + { 202, 73},
> + { 201, 70},
> + { 200, 68},
> + { 199, 65},
> + { 198, 63},
> + { 197, 60},
> + { 196, 58},
> + { 195, 55},
> + { 194, 53},
> + { 193, 50},
> + { 192, 48},
> + { 191, 45},
> + { 190, 43},
> + { 189, 40},
> + { 188, 38},
> + { 187, 35},
> + { 186, 33},
> + { 185, 30},
> + { 184, 28},
> + { 183, 25},
> + { 182, 23},
> + { 181, 20},
> + { 180, 18},
> + { 179, 15},
> + { 178, 13},
> + { 177, 10},
> + { 176, 8},
> + { 175, 5},
> + { 0, 0},
> +};
> +
> +
> static void spitz_charger_init(void)
> {
> pxa_gpio_mode(SPITZ_GPIO_KEY_INT | GPIO_IN);
> @@ -103,7 +190,7 @@
> PFER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
> PWER = GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET) | PWER_RTC;
> PKWR = GPIO_bit(SPITZ_GPIO_SYNC) | GPIO_bit(SPITZ_GPIO_KEY_INT) | GPIO_bit(SPITZ_GPIO_RESET);
> - PKSR = 0xffffffff; // clear
> + PKSR = 0xffffffff; /* clear */
>
> /* nRESET_OUT Disable */
> PSLR |= PSLR_SL_ROD;
> @@ -149,7 +236,7 @@
> if (resume_on_alarm && (PEDR & PWER_RTC))
> is_resume |= PWER_RTC;
>
> - dev_dbg(sharpsl_pm.dev, "is_resume: %x\n",is_resume);
> + dev_dbg(sharpsl_pm.dev, "is_resume: %x\n", is_resume);
> return is_resume;
> }
>
> @@ -160,7 +247,7 @@
>
> unsigned long spitzpm_read_devdata(int type)
> {
> - switch(type) {
> + switch (type) {
> case SHARPSL_STATUS_ACIN:
> return (((~GPLR(SPITZ_GPIO_AC_IN)) & GPIO_bit(SPITZ_GPIO_AC_IN)) != 0);
> case SHARPSL_STATUS_LOCK:
> @@ -199,7 +286,7 @@
> #if defined(CONFIG_LCD_CORGI)
> .backlight_limit = corgi_lcd_limit_intensity,
> #elif defined(CONFIG_BACKLIGHT_CORGI)
> - .backlight_limit = corgibl_limit_intensity,
> + .backlight_limit = corgibl_limit_intensity,
> #endif
> .charge_on_volt = SHARPSL_CHARGE_ON_VOLT,
> .charge_on_temp = SHARPSL_CHARGE_ON_TEMP,
> @@ -241,7 +328,7 @@
>
> static void spitzpm_exit(void)
> {
> - platform_device_unregister(spitzpm_device);
> + platform_device_unregister(spitzpm_device);
> }
>
> module_init(spitzpm_init);
>
>
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/