From 5ea2fc6491631d2c3f346dcb0d9d6edd44ccf4cd Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Thu, 9 Apr 2009 11:36:50 -0700 Subject: Input: i8042 - introduce a tougher reset Some touchpads don't reset right the first time (MSI Wind U-100 for example). This patch will retry the reset up to 5 times. In addition, on x86, we don't fail entire i8042 initialization if controller reset fails in hope that keyboard port will still be functional and user will still get a working keyboard. This is especially important on netbooks. Signed-off-by: Arjan van de Ven Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 170f71e..3cffb70 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -712,22 +712,43 @@ static int i8042_controller_check(void) static int i8042_controller_selftest(void) { unsigned char param; + int i = 0; if (!i8042_reset) return 0; - if (i8042_command(¶m, I8042_CMD_CTL_TEST)) { - printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n"); - return -ENODEV; - } + /* + * We try this 5 times; on some really fragile systems this does not + * take the first time... + */ + do { + + if (i8042_command(¶m, I8042_CMD_CTL_TEST)) { + printk(KERN_ERR "i8042.c: i8042 controller self test timeout.\n"); + return -ENODEV; + } + + if (param == I8042_RET_CTL_TEST) + return 0; - if (param != I8042_RET_CTL_TEST) { printk(KERN_ERR "i8042.c: i8042 controller selftest failed. (%#x != %#x)\n", - param, I8042_RET_CTL_TEST); - return -EIO; - } + param, I8042_RET_CTL_TEST); + msleep(50); + } while (i++ < 5); +#ifdef CONFIG_X86 + /* + * On x86, we don't fail entire i8042 initialization if controller + * reset fails in hopes that keyboard port will still be functional + * and user will still get a working keyboard. This is especially + * important on netbooks. On other arches we trust hardware more. + */ + printk(KERN_INFO + "i8042: giving up on controller selftest, continuing anyway...\n"); return 0; +#else + return -EIO; +#endif } /* -- cgit v0.10.2 From 7c46e23681ebca23249806b379125cf72b7435b6 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sat, 11 Apr 2009 16:50:13 -0700 Subject: Input: i8042 - add a DMI table for the i8042.reset option There are several DMI tables in the i8042 (keyboard) driver already, but not one for the i8042.reset option. This patch adds such an option. Two users for this table are added as well, the MSI Wind U-100 and the LG X110. The MSI Wind also needs to be in the "don't trust the pnp data" for the touchpad to work on my machine. Signed-off-by: Arjan van de Ven Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 83ed2d5..fb8a3cd 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -377,6 +377,24 @@ static struct dmi_system_id __initdata i8042_dmi_nomux_table[] = { { } }; +static struct dmi_system_id __initdata i8042_dmi_reset_table[] = { + { + .ident = "MSI Wind U-100", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "U-100"), + DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"), + }, + }, + { + .ident = "LG Electronics X110", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "X110"), + DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."), + }, + }, + { } +}; + #ifdef CONFIG_PNP static struct dmi_system_id __initdata i8042_dmi_nopnp_table[] = { { @@ -386,6 +404,13 @@ static struct dmi_system_id __initdata i8042_dmi_nopnp_table[] = { DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"), }, }, + { + .ident = "MSI Wind U-100", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "U-100"), + DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"), + }, + }, { } }; #endif @@ -698,6 +723,9 @@ static int __init i8042_platform_init(void) #endif #ifdef CONFIG_X86 + if (dmi_check_system(i8042_dmi_reset_table)) + i8042_reset = 1; + if (dmi_check_system(i8042_dmi_noloop_table)) i8042_noloop = 1; -- cgit v0.10.2 From b79e83bdd961ec9b862191c0df51aaeb3cb85664 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sat, 11 Apr 2009 16:50:15 -0700 Subject: Input: remove unnecessary synchronize_rcu() call There is no need to issue serialize_rcu() after adding a new handle to the list of handles associated with the device because new events will "see" the new handle in the list immediately. Remove it so we can boot a little bit faster. Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/input.c b/drivers/input/input.c index 913392f..a79c833 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -1551,7 +1551,6 @@ int input_register_handle(struct input_handle *handle) return error; list_add_tail_rcu(&handle->d_node, &dev->h_list); mutex_unlock(&dev->mutex); - synchronize_rcu(); /* * Since we are supposed to be called from ->connect() -- cgit v0.10.2 From fd746d540abf8c686f5f868ae62112692e684088 Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Sat, 11 Apr 2009 16:54:59 -0700 Subject: Input: ads7846 - introduce platform specific way to synchronize sampling Noises can be introduced when LCD signals are being driven, some platforms provide a signal to assist the synchronization of this sampling procedure. Signed-off-by: Eric Miao Signed-off-by: Andrew Morton Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index 7c27c8b..cf7e697 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -127,6 +127,8 @@ struct ads7846 { void (*filter_cleanup)(void *data); int (*get_pendown_state)(void); int gpio_pendown; + + void (*wait_for_sync)(void); }; /* leave chip selected when we're done, for quicker re-select? */ @@ -511,6 +513,10 @@ static int get_pendown_state(struct ads7846 *ts) return !gpio_get_value(ts->gpio_pendown); } +static void null_wait_for_sync(void) +{ +} + /* * PENIRQ only kicks the timer. The timer only reissues the SPI transfer, * to retrieve touchscreen status. @@ -686,6 +692,7 @@ static void ads7846_rx_val(void *ads) default: BUG(); } + ts->wait_for_sync(); status = spi_async(ts->spi, m); if (status) dev_err(&ts->spi->dev, "spi_async --> %d\n", @@ -723,6 +730,7 @@ static enum hrtimer_restart ads7846_timer(struct hrtimer *handle) } else { /* pen is still down, continue with the measurement */ ts->msg_idx = 0; + ts->wait_for_sync(); status = spi_async(ts->spi, &ts->msg[0]); if (status) dev_err(&ts->spi->dev, "spi_async --> %d\n", status); @@ -947,6 +955,8 @@ static int __devinit ads7846_probe(struct spi_device *spi) ts->penirq_recheck_delay_usecs = pdata->penirq_recheck_delay_usecs; + ts->wait_for_sync = pdata->wait_for_sync ? : null_wait_for_sync; + snprintf(ts->phys, sizeof(ts->phys), "%s/input0", dev_name(&spi->dev)); input_dev->name = "ADS784x Touchscreen"; diff --git a/include/linux/spi/ads7846.h b/include/linux/spi/ads7846.h index 05eab2f..2ea2032 100644 --- a/include/linux/spi/ads7846.h +++ b/include/linux/spi/ads7846.h @@ -51,5 +51,6 @@ struct ads7846_platform_data { void **filter_data); int (*filter) (void *filter_data, int data_idx, int *val); void (*filter_cleanup)(void *filter_data); + void (*wait_for_sync)(void); }; -- cgit v0.10.2 From 4f295232bef43adf648876a0cd950faa99daa5f1 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Sat, 11 Apr 2009 16:50:17 -0700 Subject: Input: wm97xx - don't specify IRQF_SAMPLE_RANDOM The input core will add entropy to the pool so this flag is not needed. Signed-off-by: Mark Brown Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index cec480b..69af838 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -370,8 +370,7 @@ static int wm97xx_init_pen_irq(struct wm97xx *wm) * provided. */ BUG_ON(!wm->mach_ops->irq_enable); - if (request_irq(wm->pen_irq, wm97xx_pen_interrupt, - IRQF_SHARED | IRQF_SAMPLE_RANDOM, + if (request_irq(wm->pen_irq, wm97xx_pen_interrupt, IRQF_SHARED, "wm97xx-pen", wm)) { dev_err(wm->dev, "Failed to register pen down interrupt, polling"); -- cgit v0.10.2 From d061ebd57a046b3df8be8b76c387a95171059244 Mon Sep 17 00:00:00 2001 From: Alexander Beregalov Date: Sat, 11 Apr 2009 16:55:41 -0700 Subject: Input: hp_sdc_rtc should depend on serio Fix this build error when CONFIG_SERIO is not set hp_sdc_rtc.c:691: undefined reference to `hp_sdc_request_timer_irq' and so on.. "select should be used with care. select will force a symbol to a value without visiting the dependencies." Signed-off-by: Alexander Beregalov Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/misc/Kconfig b/drivers/input/misc/Kconfig index 203abac..5c0a631 100644 --- a/drivers/input/misc/Kconfig +++ b/drivers/input/misc/Kconfig @@ -214,7 +214,7 @@ config INPUT_SGI_BTNS config HP_SDC_RTC tristate "HP SDC Real Time Clock" - depends on GSC || HP300 + depends on (GSC || HP300) && SERIO select HP_SDC help Say Y here if you want to support the built-in real time clock -- cgit v0.10.2 From 4ced8e7cb990a2c3bbf0ac7f27b35c890e7ce895 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 13 Apr 2009 15:27:49 -0700 Subject: Input: gameport - fix attach driver code The commit 6902c0bead4ce266226fc0c5b3828b850bdc884a that moved driver registration out of kgameportd thread was incomplete and did not add the code necessary to actually attach driver to already registered devices, rectify that. Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c index ebf4be5..2d175b5 100644 --- a/drivers/input/gameport/gameport.c +++ b/drivers/input/gameport/gameport.c @@ -50,9 +50,8 @@ static LIST_HEAD(gameport_list); static struct bus_type gameport_bus; -static void gameport_add_driver(struct gameport_driver *drv); static void gameport_add_port(struct gameport *gameport); -static void gameport_destroy_port(struct gameport *gameport); +static void gameport_attach_driver(struct gameport_driver *drv); static void gameport_reconnect_port(struct gameport *gameport); static void gameport_disconnect_port(struct gameport *gameport); @@ -230,7 +229,6 @@ static void gameport_find_driver(struct gameport *gameport) enum gameport_event_type { GAMEPORT_REGISTER_PORT, - GAMEPORT_REGISTER_DRIVER, GAMEPORT_ATTACH_DRIVER, }; @@ -374,8 +372,8 @@ static void gameport_handle_event(void) gameport_add_port(event->object); break; - case GAMEPORT_REGISTER_DRIVER: - gameport_add_driver(event->object); + case GAMEPORT_ATTACH_DRIVER: + gameport_attach_driver(event->object); break; default: @@ -706,14 +704,14 @@ static int gameport_driver_remove(struct device *dev) return 0; } -static void gameport_add_driver(struct gameport_driver *drv) +static void gameport_attach_driver(struct gameport_driver *drv) { int error; - error = driver_register(&drv->driver); + error = driver_attach(&drv->driver); if (error) printk(KERN_ERR - "gameport: driver_register() failed for %s, error: %d\n", + "gameport: driver_attach() failed for %s, error: %d\n", drv->driver.name, error); } -- cgit v0.10.2 From 157f3a3e17cd498571db2a472dc3a15a7679ee3f Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Mon, 13 Apr 2009 15:27:50 -0700 Subject: Input: atkbd - add forced release keys quirk for Samsung Q45 Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c index f999dc6..f3e348e 100644 --- a/drivers/input/keyboard/atkbd.c +++ b/drivers/input/keyboard/atkbd.c @@ -1534,6 +1534,15 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = { .driver_data = atkbd_samsung_forced_release_keys, }, { + .ident = "Samsung SQ45S70S", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), + }, + .callback = atkbd_setup_forced_release, + .driver_data = atkbd_samsung_forced_release_keys, + }, + { .ident = "Fujitsu Amilo PA 1510", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), -- cgit v0.10.2 From e04126c79242d2740b469292d42c239bad7807cc Mon Sep 17 00:00:00 2001 From: Barry Carroll Date: Tue, 14 Apr 2009 10:38:34 -0700 Subject: Input: atkbd - add forced release keys quirk for Samsung NC20 Signed-off-by: Barry Carroll Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/atkbd.c b/drivers/input/keyboard/atkbd.c index f3e348e..444dec0 100644 --- a/drivers/input/keyboard/atkbd.c +++ b/drivers/input/keyboard/atkbd.c @@ -880,7 +880,7 @@ static unsigned int atkbd_hp_zv6100_forced_release_keys[] = { }; /* - * Samsung NC10 with Fn+F? key release not working + * Samsung NC10,NC20 with Fn+F? key release not working */ static unsigned int atkbd_samsung_forced_release_keys[] = { 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U @@ -1534,6 +1534,15 @@ static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = { .driver_data = atkbd_samsung_forced_release_keys, }, { + .ident = "Samsung NC20", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), + DMI_MATCH(DMI_PRODUCT_NAME, "NC20"), + }, + .callback = atkbd_setup_forced_release, + .driver_data = atkbd_samsung_forced_release_keys, + }, + { .ident = "Samsung SQ45S70S", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), -- cgit v0.10.2 From 93ff27c66de5c9eb0ead1e6f979afa97cbcf1e9d Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 14 Apr 2009 10:38:35 -0700 Subject: Input: da9034-ts - add Bin Yang as co-author of the driver Bin did a lot of work on this driver, without his help, this driver will not be possible. Signed-off-by: Bin Yang Signed-off-by: Eric Miao Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/da9034-ts.c b/drivers/input/touchscreen/da9034-ts.c index fa67d78..666a6e7 100644 --- a/drivers/input/touchscreen/da9034-ts.c +++ b/drivers/input/touchscreen/da9034-ts.c @@ -3,6 +3,7 @@ * * Copyright (C) 2006-2008 Marvell International Ltd. * Fengwei Yin + * Bin Yang * Eric Miao * * This program is free software; you can redistribute it and/or modify @@ -385,6 +386,6 @@ static void __exit da9034_touch_exit(void) module_exit(da9034_touch_exit); MODULE_DESCRIPTION("Touchscreen driver for Dialog Semiconductor DA9034"); -MODULE_AUTHOR("Eric Miao "); +MODULE_AUTHOR("Eric Miao , Bin Yang "); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:da9034-touch"); -- cgit v0.10.2 From 7f6d5ff22b06d0c4db7b3b1eae336a19e88f808c Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 14 Apr 2009 10:38:35 -0700 Subject: Input: da9034-ts - make pen {down,up} events more reliable PEN_{UP/DOWN} events are expected to be available soon after stopping TSI auto measurement, but this is found not always be true. Work around this by adding delay and simulating such an event (according to pen down status bit). Signed-off-by: Bin Yang Signed-off-by: Eric Miao Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/da9034-ts.c b/drivers/input/touchscreen/da9034-ts.c index 666a6e7..3ffd4c4 100644 --- a/drivers/input/touchscreen/da9034-ts.c +++ b/drivers/input/touchscreen/da9034-ts.c @@ -176,6 +176,16 @@ static void da9034_event_handler(struct da9034_touch *touch, int event) goto err_reset; touch->state = STATE_STOP; + + /* FIXME: PEN_{UP/DOWN} events are expected to be + * available by stopping TSI, but this is found not + * always true, delay and simulate such an event + * here is more reliable + */ + mdelay(1); + da9034_event_handler(touch, + is_pen_down(touch) ? EVENT_PEN_DOWN : + EVENT_PEN_UP); break; case STATE_STOP: @@ -190,8 +200,6 @@ static void da9034_event_handler(struct da9034_touch *touch, int event) report_pen_up(touch); touch->state = STATE_IDLE; } - - input_sync(touch->input_dev); break; case STATE_WAIT: @@ -201,8 +209,10 @@ static void da9034_event_handler(struct da9034_touch *touch, int event) if (is_pen_down(touch)) { start_tsi(touch); touch->state = STATE_BUSY; - } else + } else { + report_pen_up(touch); touch->state = STATE_IDLE; + } break; } return; @@ -227,16 +237,12 @@ static int da9034_touch_notifier(struct notifier_block *nb, struct da9034_touch *touch = container_of(nb, struct da9034_touch, notifier); - if (event & DA9034_EVENT_PEN_DOWN) { - if (is_pen_down(touch)) - da9034_event_handler(touch, EVENT_PEN_DOWN); - else - da9034_event_handler(touch, EVENT_PEN_UP); - } - if (event & DA9034_EVENT_TSI_READY) da9034_event_handler(touch, EVENT_TSI_READY); + if ((event & DA9034_EVENT_PEN_DOWN) && touch->state == STATE_IDLE) + da9034_event_handler(touch, EVENT_PEN_DOWN); + return 0; } -- cgit v0.10.2 From 0bc69ce692bd240bef2819d9f3b3527fad524f5b Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 14 Apr 2009 10:38:36 -0700 Subject: Input: ad7877, ad7879 - remove depreciated IRQF_SAMPLE_RANDOM flag This patch removes depreciated IRQF_SAMPLE_RANDOM flags from ad7877 and ad7879 touchscreen drivers. Signed-off-by: Michael Hennerich Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index e4728a2..ecaeb7e 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -736,8 +736,8 @@ static int __devinit ad7877_probe(struct spi_device *spi) /* Request AD7877 /DAV GPIO interrupt */ - err = request_irq(spi->irq, ad7877_irq, IRQF_TRIGGER_FALLING | - IRQF_SAMPLE_RANDOM, spi->dev.driver->name, ts); + err = request_irq(spi->irq, ad7877_irq, IRQF_TRIGGER_FALLING, + spi->dev.driver->name, ts); if (err) { dev_dbg(&spi->dev, "irq %d busy?\n", spi->irq); goto err_free_mem; diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c index ea4c61d..5d8a703 100644 --- a/drivers/input/touchscreen/ad7879.c +++ b/drivers/input/touchscreen/ad7879.c @@ -448,8 +448,7 @@ static int __devinit ad7879_construct(bus_device *bus, struct ad7879 *ts) ad7879_setup(ts); err = request_irq(bus->irq, ad7879_irq, - IRQF_TRIGGER_FALLING | IRQF_SAMPLE_RANDOM, - bus->dev.driver->name, ts); + IRQF_TRIGGER_FALLING, bus->dev.driver->name, ts); if (err) { dev_err(&bus->dev, "irq %d busy?\n", bus->irq); -- cgit v0.10.2 From 3eaa750d5652afbb9c8f25308c3647f89e41cefb Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Tue, 14 Apr 2009 10:38:36 -0700 Subject: Input: bf54x-keys - remove depreciated IRQF_SAMPLE_RANDOM flag Signed-off-by: Michael Hennerich Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/keyboard/bf54x-keys.c b/drivers/input/keyboard/bf54x-keys.c index e94b7d7..d427f32 100644 --- a/drivers/input/keyboard/bf54x-keys.c +++ b/drivers/input/keyboard/bf54x-keys.c @@ -252,7 +252,7 @@ static int __devinit bfin_kpad_probe(struct platform_device *pdev) } error = request_irq(bf54x_kpad->irq, bfin_kpad_isr, - IRQF_SAMPLE_RANDOM, DRV_NAME, pdev); + 0, DRV_NAME, pdev); if (error) { printk(KERN_ERR DRV_NAME ": unable to claim irq %d; error %d\n", -- cgit v0.10.2 From 9a03fbe802f4bd676de17af61aaaab8969982439 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= Date: Wed, 15 Apr 2009 09:03:07 -0700 Subject: Input: pc110pad - remove unused variable dev MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit dev is leftover from b0ee0d3eb31a163c958f2960906c44bcdfdc607b (Input: pc110pad - use no_pci_devices()). Signed-off-by: Ilpo Järvinen Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/mouse/pc110pad.c b/drivers/input/mouse/pc110pad.c index f63995f..3941f97 100644 --- a/drivers/input/mouse/pc110pad.c +++ b/drivers/input/mouse/pc110pad.c @@ -108,7 +108,6 @@ static int pc110pad_open(struct input_dev *dev) */ static int __init pc110pad_init(void) { - struct pci_dev *dev; int err; if (!no_pci_devices()) -- cgit v0.10.2 From 180deb50880cdc5e9dd69ec97af0d6e72c5417fc Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Wed, 15 Apr 2009 09:03:07 -0700 Subject: Input: mainstone-wm97xx - fix condition in pen_up The loop body was never executed, because the condition is always false. Convert to for with more obvious condition. Signed-off-by: Jiri Slaby Acked-by: Mark Brown Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c index dfa6a84..4cc047a 100644 --- a/drivers/input/touchscreen/mainstone-wm97xx.c +++ b/drivers/input/touchscreen/mainstone-wm97xx.c @@ -111,13 +111,12 @@ static void wm97xx_acc_pen_up(struct wm97xx *wm) #else static void wm97xx_acc_pen_up(struct wm97xx *wm) { - int count = 16; + unsigned int count; + schedule_timeout_uninterruptible(1); - while (count < 16) { + for (count = 0; count < 16; count++) MODR; - count--; - } } #endif -- cgit v0.10.2 From 3f3e7c6e139f704e2f48ea3b45ff7724a8d46456 Mon Sep 17 00:00:00 2001 From: Ben Nizette Date: Wed, 15 Apr 2009 18:57:55 -0700 Subject: Input: ads7846 - fix unsafe disable_irq The use of disable_irq inside the handler for the interrupt being disabled has always been dangerous. disable_irq should wait for that handler to complete before returning -> deadlock. For some reason this wasn't actually the case until 3aa551c9b was merged but since this time, the ads7846 driver has deadlocked the system on first interrupt. Convert the driver to use the handler-safe _nosync variant. Signed-off-by: Ben Nizette Signed-off-by: Dmitry Torokhov diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c index cf7e697..8b6e30a 100644 --- a/drivers/input/touchscreen/ads7846.c +++ b/drivers/input/touchscreen/ads7846.c @@ -754,7 +754,7 @@ static irqreturn_t ads7846_irq(int irq, void *handle) * that here. (The "generic irq" framework may help...) */ ts->irq_disabled = 1; - disable_irq(ts->spi->irq); + disable_irq_nosync(ts->spi->irq); ts->pending = 1; hrtimer_start(&ts->timer, ktime_set(0, TS_POLL_DELAY), HRTIMER_MODE_REL); -- cgit v0.10.2