From 827e609b4581282b98bdf7666f6e93ff1bd1a63e Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Wed, 28 May 2008 12:49:56 -0500 Subject: kgdb: use common ascii helpers and put_unaligned_be32 helper Signed-off-by: Harvey Harrison Signed-off-by: Andrew Morton Signed-off-by: Jason Wessel --- drivers/misc/kgdbts.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c index fa39410..2763ae0 100644 --- a/drivers/misc/kgdbts.c +++ b/drivers/misc/kgdbts.c @@ -119,7 +119,6 @@ } while (0) #define MAX_CONFIG_LEN 40 -static const char hexchars[] = "0123456789abcdef"; static struct kgdb_io kgdbts_io_ops; static char get_buf[BUFMAX]; static int get_buf_cnt; @@ -619,8 +618,8 @@ static void fill_get_buf(char *buf) count++; } strcat(get_buf, "#"); - get_buf[count + 2] = hexchars[checksum >> 4]; - get_buf[count + 3] = hexchars[checksum & 0xf]; + get_buf[count + 2] = hex_asc_hi(checksum); + get_buf[count + 3] = hex_asc_lo(checksum); get_buf[count + 4] = '\0'; v2printk("get%i: %s\n", ts.idx, get_buf); } -- cgit v1.1 From b33cb815b565a94c654a0fe8e62e36f5b4053888 Mon Sep 17 00:00:00 2001 From: Jason Wessel Date: Wed, 28 May 2008 12:49:57 -0500 Subject: kgdbts: Use HW breakpoints with CONFIG_DEBUG_RODATA Whenever CONFIG_DEBUG_RODATA is set in the kernel config many kernel text sections become read-only, and the use of software breakpoints in the kgdb tests will cause the kernel to fail to complete the start up. Until such time that there is an official API for modifying read-only text sections hardware breakpoints must be used to run the do_fork or sys_open tests or the tests get skipped. Also fix the duplicated include reported by: Huang Weiyi Signed-off-by: Jason Wessel --- drivers/misc/kgdbts.c | 28 ++++++++++++++++++++++++---- 1 file changed, 24 insertions(+), 4 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c index 2763ae0..e4ff50b 100644 --- a/drivers/misc/kgdbts.c +++ b/drivers/misc/kgdbts.c @@ -102,7 +102,6 @@ #include #include #include -#include #define v1printk(a...) do { \ if (verbose) \ @@ -130,6 +129,8 @@ static int repeat_test; static int test_complete; static int send_ack; static int final_ack; +static int force_hwbrks; +static int hwbreaks_ok; static int hw_break_val; static int hw_break_val2; #if defined(CONFIG_ARM) || defined(CONFIG_MIPS) || defined(CONFIG_SPARC) @@ -233,12 +234,12 @@ static void break_helper(char *bp_type, char *arg, unsigned long vaddr) static void sw_break(char *arg) { - break_helper("Z0", arg, 0); + break_helper(force_hwbrks ? "Z1" : "Z0", arg, 0); } static void sw_rem_break(char *arg) { - break_helper("z0", arg, 0); + break_helper(force_hwbrks ? "z1" : "z0", arg, 0); } static void hw_break(char *arg) @@ -780,6 +781,8 @@ static void run_breakpoint_test(int is_hw_breakpoint) return; eprintk("kgdbts: ERROR %s test failed\n", ts.name); + if (is_hw_breakpoint) + hwbreaks_ok = 0; } static void run_hw_break_test(int is_write_test) @@ -797,9 +800,11 @@ static void run_hw_break_test(int is_write_test) kgdb_breakpoint(); hw_break_val_access(); if (is_write_test) { - if (test_complete == 2) + if (test_complete == 2) { eprintk("kgdbts: ERROR %s broke on access\n", ts.name); + hwbreaks_ok = 0; + } hw_break_val_write(); } kgdb_breakpoint(); @@ -808,6 +813,7 @@ static void run_hw_break_test(int is_write_test) return; eprintk("kgdbts: ERROR %s test failed\n", ts.name); + hwbreaks_ok = 0; } static void run_nmi_sleep_test(int nmi_sleep) @@ -911,6 +917,7 @@ static void kgdbts_run_tests(void) /* All HW break point tests */ if (arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT) { + hwbreaks_ok = 1; v1printk("kgdbts:RUN hw breakpoint test\n"); run_breakpoint_test(1); v1printk("kgdbts:RUN hw write breakpoint test\n"); @@ -924,6 +931,19 @@ static void kgdbts_run_tests(void) run_nmi_sleep_test(nmi_sleep); } +#ifdef CONFIG_DEBUG_RODATA + /* Until there is an api to write to read-only text segments, use + * HW breakpoints for the remainder of any tests, else print a + * failure message if hw breakpoints do not work. + */ + if (!(arch_kgdb_ops.flags & KGDB_HW_BREAKPOINT && hwbreaks_ok)) { + eprintk("kgdbts: HW breakpoints do not work," + "skipping remaining tests\n"); + return; + } + force_hwbrks = 1; +#endif /* CONFIG_DEBUG_RODATA */ + /* If the do_fork test is run it will be the last test that is * executed because a kernel thread will be spawned at the very * end to unregister the debug hooks. -- cgit v1.1 From e3aa51fecdc941c859ed0515084323d3f997aa4a Mon Sep 17 00:00:00 2001 From: Harvey Harrison Date: Thu, 29 May 2008 17:51:57 -0700 Subject: acpi: fix sparse const errors In this case we want a constant pointer to constant chars: drivers/misc/thinkpad_acpi.c:3824:19: error: Just how const do you want this type to be? Like the error says. drivers/misc/thinkpad_acpi.c:3863:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3864:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3865:19: error: Just how const do you want this type to be? drivers/misc/thinkpad_acpi.c:3866:19: error: Just how const do you want this type to be? Signed-off-by: Harvey Harrison Acked-by: Henrique de Moraes Holschuh Signed-off-by: Linus Torvalds --- drivers/misc/thinkpad_acpi.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 3f28f6e..a0ce0b2 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -3821,7 +3821,7 @@ TPACPI_HANDLE(led, ec, "SLED", /* 570 */ #define TPACPI_LED_NUMLEDS 8 static struct tpacpi_led_classdev *tpacpi_leds; static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; -static const char const *tpacpi_led_names[TPACPI_LED_NUMLEDS] = { +static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { /* there's a limit of 19 chars + NULL before 2.6.26 */ "tpacpi::power", "tpacpi:orange:batt", @@ -3860,10 +3860,10 @@ static int led_get_status(unsigned int led) static int led_set_status(unsigned int led, enum led_status_t ledstatus) { /* off, on, blink. Index is led_status_t */ - static const int const led_sled_arg1[] = { 0, 1, 3 }; - static const int const led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ - static const int const led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ - static const int const led_led_arg1[] = { 0, 0x80, 0xc0 }; + static const int led_sled_arg1[] = { 0, 1, 3 }; + static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ + static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ + static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; int rc = 0; -- cgit v1.1 From a361a82c10c20eff402d72ce83b66913d04894ee Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Thu, 5 Jun 2008 22:46:08 -0700 Subject: fujitsu-laptop: autoload module on Lifebook P1510D Signed-off-by: Dan Williams Cc: Jonathan Woithe Cc: Len Brown Cc: Greg KH Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/fujitsu-laptop.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/misc') diff --git a/drivers/misc/fujitsu-laptop.c b/drivers/misc/fujitsu-laptop.c index e2e7c05..6d14e8f 100644 --- a/drivers/misc/fujitsu-laptop.c +++ b/drivers/misc/fujitsu-laptop.c @@ -352,3 +352,9 @@ MODULE_AUTHOR("Jonathan Woithe"); MODULE_DESCRIPTION("Fujitsu laptop extras support"); MODULE_VERSION(FUJITSU_DRIVER_VERSION); MODULE_LICENSE("GPL"); + +static struct pnp_device_id pnp_ids[] = { + { .id = "FUJ02bf" }, + { .id = "" } +}; +MODULE_DEVICE_TABLE(pnp, pnp_ids); -- cgit v1.1 From 197a2cd907e3a5278a1cfd48c86402133f38a9ba Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Tue, 3 Jun 2008 23:36:09 -0300 Subject: thinkpad-acpi: SW_RADIO to SW_RFKILL_ALL rename Rename SW_RADIO to SW_RFKILL_ALL in thinkpad-acpi code and docs, following 5adad0133907790c50283bf03271d920d6897043 "Input: rename SW_RADIO to SW_RFKILL_ALL". Signed-off-by: Henrique de Moraes Holschuh Signed-off-by: Len Brown --- drivers/misc/thinkpad_acpi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index a0ce0b2..f81e048 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -1293,7 +1293,7 @@ static void tpacpi_input_send_radiosw(void) mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, - SW_RADIO, !!wlsw); + SW_RFKILL_ALL, !!wlsw); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); @@ -2199,7 +2199,7 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) if (tp_features.hotkey_wlsw) { set_bit(EV_SW, tpacpi_inputdev->evbit); - set_bit(SW_RADIO, tpacpi_inputdev->swbit); + set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); } if (tp_features.hotkey_tablet) { set_bit(EV_SW, tpacpi_inputdev->evbit); -- cgit v1.1 From 9c0a76e16ee6648f4bd19563e9fe12a4f4fabba1 Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Tue, 3 Jun 2008 23:36:10 -0300 Subject: thinkpad-acpi: fix initialization error paths Rework some subdriver init and exit handlers, in order to fix some initialization error paths that were missing, or broken. Hitting those bugs should be extremely rare in the real world, but should that happen, thinkpad-acpi would fail to dealocate some resources and a reboot might well be needed to be able to load the driver again. Signed-off-by: Henrique de Moraes Holschuh Signed-off-by: Len Brown --- drivers/misc/thinkpad_acpi.c | 437 +++++++++++++++++++++++-------------------- 1 file changed, 230 insertions(+), 207 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index f81e048..58973da 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -1921,6 +1921,29 @@ static struct attribute *hotkey_mask_attributes[] __initdata = { &dev_attr_hotkey_wakeup_hotunplug_complete.attr, }; +static void hotkey_exit(void) +{ +#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL + hotkey_poll_stop_sync(); +#endif + + if (hotkey_dev_attributes) + delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); + + kfree(hotkey_keycode_map); + + if (tp_features.hotkey) { + dbg_printk(TPACPI_DBG_EXIT, + "restoring original hot key mask\n"); + /* no short-circuit boolean operator below! */ + if ((hotkey_mask_set(hotkey_orig_mask) | + hotkey_status_set(hotkey_orig_status)) != 0) + printk(TPACPI_ERR + "failed to restore hot key mask " + "to BIOS defaults\n"); + } +} + static int __init hotkey_init(struct ibm_init_struct *iibm) { /* Requirements for changing the default keymaps: @@ -2060,226 +2083,220 @@ static int __init hotkey_init(struct ibm_init_struct *iibm) vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", str_supported(tp_features.hotkey)); - if (tp_features.hotkey) { - hotkey_dev_attributes = create_attr_set(13, NULL); - if (!hotkey_dev_attributes) - return -ENOMEM; - res = add_many_to_attr_set(hotkey_dev_attributes, - hotkey_attributes, - ARRAY_SIZE(hotkey_attributes)); - if (res) - return res; + if (!tp_features.hotkey) + return 1; - /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, - A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking - for HKEY interface version 0x100 */ - if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { - if ((hkeyv >> 8) != 1) { - printk(TPACPI_ERR "unknown version of the " - "HKEY interface: 0x%x\n", hkeyv); - printk(TPACPI_ERR "please report this to %s\n", - TPACPI_MAIL); - } else { - /* - * MHKV 0x100 in A31, R40, R40e, - * T4x, X31, and later - */ - tp_features.hotkey_mask = 1; - } + hotkey_dev_attributes = create_attr_set(13, NULL); + if (!hotkey_dev_attributes) + return -ENOMEM; + res = add_many_to_attr_set(hotkey_dev_attributes, + hotkey_attributes, + ARRAY_SIZE(hotkey_attributes)); + if (res) + goto err_exit; + + /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, + A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking + for HKEY interface version 0x100 */ + if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { + if ((hkeyv >> 8) != 1) { + printk(TPACPI_ERR "unknown version of the " + "HKEY interface: 0x%x\n", hkeyv); + printk(TPACPI_ERR "please report this to %s\n", + TPACPI_MAIL); + } else { + /* + * MHKV 0x100 in A31, R40, R40e, + * T4x, X31, and later + */ + tp_features.hotkey_mask = 1; } + } - vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", - str_supported(tp_features.hotkey_mask)); + vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", + str_supported(tp_features.hotkey_mask)); - if (tp_features.hotkey_mask) { - if (!acpi_evalf(hkey_handle, &hotkey_all_mask, - "MHKA", "qd")) { - printk(TPACPI_ERR - "missing MHKA handler, " - "please report this to %s\n", - TPACPI_MAIL); - /* FN+F12, FN+F4, FN+F3 */ - hotkey_all_mask = 0x080cU; - } + if (tp_features.hotkey_mask) { + if (!acpi_evalf(hkey_handle, &hotkey_all_mask, + "MHKA", "qd")) { + printk(TPACPI_ERR + "missing MHKA handler, " + "please report this to %s\n", + TPACPI_MAIL); + /* FN+F12, FN+F4, FN+F3 */ + hotkey_all_mask = 0x080cU; } + } - /* hotkey_source_mask *must* be zero for - * the first hotkey_mask_get */ - res = hotkey_status_get(&hotkey_orig_status); - if (!res && tp_features.hotkey_mask) { - res = hotkey_mask_get(); - hotkey_orig_mask = hotkey_mask; - if (!res) { - res = add_many_to_attr_set( - hotkey_dev_attributes, - hotkey_mask_attributes, - ARRAY_SIZE(hotkey_mask_attributes)); - } - } + /* hotkey_source_mask *must* be zero for + * the first hotkey_mask_get */ + res = hotkey_status_get(&hotkey_orig_status); + if (res) + goto err_exit; + + if (tp_features.hotkey_mask) { + res = hotkey_mask_get(); + if (res) + goto err_exit; + + hotkey_orig_mask = hotkey_mask; + res = add_many_to_attr_set( + hotkey_dev_attributes, + hotkey_mask_attributes, + ARRAY_SIZE(hotkey_mask_attributes)); + if (res) + goto err_exit; + } #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - if (tp_features.hotkey_mask) { - hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK - & ~hotkey_all_mask; - } else { - hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; - } + if (tp_features.hotkey_mask) { + hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK + & ~hotkey_all_mask; + } else { + hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; + } - vdbg_printk(TPACPI_DBG_INIT, - "hotkey source mask 0x%08x, polling freq %d\n", - hotkey_source_mask, hotkey_poll_freq); + vdbg_printk(TPACPI_DBG_INIT, + "hotkey source mask 0x%08x, polling freq %d\n", + hotkey_source_mask, hotkey_poll_freq); #endif - /* Not all thinkpads have a hardware radio switch */ - if (!res && acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { - tp_features.hotkey_wlsw = 1; - printk(TPACPI_INFO - "radio switch found; radios are %s\n", - enabled(status, 0)); - res = add_to_attr_set(hotkey_dev_attributes, - &dev_attr_hotkey_radio_sw.attr); - } + /* Not all thinkpads have a hardware radio switch */ + if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { + tp_features.hotkey_wlsw = 1; + printk(TPACPI_INFO + "radio switch found; radios are %s\n", + enabled(status, 0)); + res = add_to_attr_set(hotkey_dev_attributes, + &dev_attr_hotkey_radio_sw.attr); + } - /* For X41t, X60t, X61t Tablets... */ - if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { - tp_features.hotkey_tablet = 1; - printk(TPACPI_INFO - "possible tablet mode switch found; " - "ThinkPad in %s mode\n", - (status & TP_HOTKEY_TABLET_MASK)? - "tablet" : "laptop"); - res = add_to_attr_set(hotkey_dev_attributes, - &dev_attr_hotkey_tablet_mode.attr); - } + /* For X41t, X60t, X61t Tablets... */ + if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { + tp_features.hotkey_tablet = 1; + printk(TPACPI_INFO + "possible tablet mode switch found; " + "ThinkPad in %s mode\n", + (status & TP_HOTKEY_TABLET_MASK)? + "tablet" : "laptop"); + res = add_to_attr_set(hotkey_dev_attributes, + &dev_attr_hotkey_tablet_mode.attr); + } - if (!res) - res = register_attr_set_with_sysfs( - hotkey_dev_attributes, - &tpacpi_pdev->dev.kobj); - if (res) - return res; + if (!res) + res = register_attr_set_with_sysfs( + hotkey_dev_attributes, + &tpacpi_pdev->dev.kobj); + if (res) + goto err_exit; - /* Set up key map */ + /* Set up key map */ - hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, - GFP_KERNEL); - if (!hotkey_keycode_map) { - printk(TPACPI_ERR - "failed to allocate memory for key map\n"); - return -ENOMEM; - } + hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, + GFP_KERNEL); + if (!hotkey_keycode_map) { + printk(TPACPI_ERR + "failed to allocate memory for key map\n"); + res = -ENOMEM; + goto err_exit; + } - if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { - dbg_printk(TPACPI_DBG_INIT, - "using Lenovo default hot key map\n"); - memcpy(hotkey_keycode_map, &lenovo_keycode_map, - TPACPI_HOTKEY_MAP_SIZE); + if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { + dbg_printk(TPACPI_DBG_INIT, + "using Lenovo default hot key map\n"); + memcpy(hotkey_keycode_map, &lenovo_keycode_map, + TPACPI_HOTKEY_MAP_SIZE); + } else { + dbg_printk(TPACPI_DBG_INIT, + "using IBM default hot key map\n"); + memcpy(hotkey_keycode_map, &ibm_keycode_map, + TPACPI_HOTKEY_MAP_SIZE); + } + + set_bit(EV_KEY, tpacpi_inputdev->evbit); + set_bit(EV_MSC, tpacpi_inputdev->evbit); + set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); + tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; + tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; + tpacpi_inputdev->keycode = hotkey_keycode_map; + for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { + if (hotkey_keycode_map[i] != KEY_RESERVED) { + set_bit(hotkey_keycode_map[i], + tpacpi_inputdev->keybit); } else { - dbg_printk(TPACPI_DBG_INIT, - "using IBM default hot key map\n"); - memcpy(hotkey_keycode_map, &ibm_keycode_map, - TPACPI_HOTKEY_MAP_SIZE); - } - - set_bit(EV_KEY, tpacpi_inputdev->evbit); - set_bit(EV_MSC, tpacpi_inputdev->evbit); - set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); - tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; - tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; - tpacpi_inputdev->keycode = hotkey_keycode_map; - for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { - if (hotkey_keycode_map[i] != KEY_RESERVED) { - set_bit(hotkey_keycode_map[i], - tpacpi_inputdev->keybit); - } else { - if (i < sizeof(hotkey_reserved_mask)*8) - hotkey_reserved_mask |= 1 << i; - } - } - - if (tp_features.hotkey_wlsw) { - set_bit(EV_SW, tpacpi_inputdev->evbit); - set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); - } - if (tp_features.hotkey_tablet) { - set_bit(EV_SW, tpacpi_inputdev->evbit); - set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); + if (i < sizeof(hotkey_reserved_mask)*8) + hotkey_reserved_mask |= 1 << i; } + } - /* Do not issue duplicate brightness change events to - * userspace */ - if (!tp_features.bright_acpimode) - /* update bright_acpimode... */ - tpacpi_check_std_acpi_brightness_support(); - - if (tp_features.bright_acpimode) { - printk(TPACPI_INFO - "This ThinkPad has standard ACPI backlight " - "brightness control, supported by the ACPI " - "video driver\n"); - printk(TPACPI_NOTICE - "Disabling thinkpad-acpi brightness events " - "by default...\n"); - - /* The hotkey_reserved_mask change below is not - * necessary while the keys are at KEY_RESERVED in the - * default map, but better safe than sorry, leave it - * here as a marker of what we have to do, especially - * when we finally become able to set this at runtime - * on response to X.org requests */ - hotkey_reserved_mask |= - (1 << TP_ACPI_HOTKEYSCAN_FNHOME) - | (1 << TP_ACPI_HOTKEYSCAN_FNEND); - } + if (tp_features.hotkey_wlsw) { + set_bit(EV_SW, tpacpi_inputdev->evbit); + set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); + } + if (tp_features.hotkey_tablet) { + set_bit(EV_SW, tpacpi_inputdev->evbit); + set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); + } - dbg_printk(TPACPI_DBG_INIT, - "enabling hot key handling\n"); - res = hotkey_status_set(1); - if (res) - return res; - res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) - & ~hotkey_reserved_mask) - | hotkey_orig_mask); - if (res < 0 && res != -ENXIO) - return res; + /* Do not issue duplicate brightness change events to + * userspace */ + if (!tp_features.bright_acpimode) + /* update bright_acpimode... */ + tpacpi_check_std_acpi_brightness_support(); - dbg_printk(TPACPI_DBG_INIT, - "legacy hot key reporting over procfs %s\n", - (hotkey_report_mode < 2) ? - "enabled" : "disabled"); + if (tp_features.bright_acpimode) { + printk(TPACPI_INFO + "This ThinkPad has standard ACPI backlight " + "brightness control, supported by the ACPI " + "video driver\n"); + printk(TPACPI_NOTICE + "Disabling thinkpad-acpi brightness events " + "by default...\n"); + + /* The hotkey_reserved_mask change below is not + * necessary while the keys are at KEY_RESERVED in the + * default map, but better safe than sorry, leave it + * here as a marker of what we have to do, especially + * when we finally become able to set this at runtime + * on response to X.org requests */ + hotkey_reserved_mask |= + (1 << TP_ACPI_HOTKEYSCAN_FNHOME) + | (1 << TP_ACPI_HOTKEYSCAN_FNEND); + } + + dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n"); + res = hotkey_status_set(1); + if (res) { + hotkey_exit(); + return res; + } + res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) + & ~hotkey_reserved_mask) + | hotkey_orig_mask); + if (res < 0 && res != -ENXIO) { + hotkey_exit(); + return res; + } - tpacpi_inputdev->open = &hotkey_inputdev_open; - tpacpi_inputdev->close = &hotkey_inputdev_close; + dbg_printk(TPACPI_DBG_INIT, + "legacy hot key reporting over procfs %s\n", + (hotkey_report_mode < 2) ? + "enabled" : "disabled"); - hotkey_poll_setup_safe(1); - tpacpi_input_send_radiosw(); - tpacpi_input_send_tabletsw(); - } + tpacpi_inputdev->open = &hotkey_inputdev_open; + tpacpi_inputdev->close = &hotkey_inputdev_close; - return (tp_features.hotkey)? 0 : 1; -} + hotkey_poll_setup_safe(1); + tpacpi_input_send_radiosw(); + tpacpi_input_send_tabletsw(); -static void hotkey_exit(void) -{ -#ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL - hotkey_poll_stop_sync(); -#endif + return 0; - if (tp_features.hotkey) { - dbg_printk(TPACPI_DBG_EXIT, - "restoring original hot key mask\n"); - /* no short-circuit boolean operator below! */ - if ((hotkey_mask_set(hotkey_orig_mask) | - hotkey_status_set(hotkey_orig_status)) != 0) - printk(TPACPI_ERR - "failed to restore hot key mask " - "to BIOS defaults\n"); - } +err_exit: + delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); + hotkey_dev_attributes = NULL; - if (hotkey_dev_attributes) { - delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); - hotkey_dev_attributes = NULL; - } + return (res < 0)? res : 1; } static void hotkey_notify(struct ibm_struct *ibm, u32 event) @@ -3319,7 +3336,7 @@ static struct tpacpi_led_classdev tpacpi_led_thinklight = { static int __init light_init(struct ibm_init_struct *iibm) { - int rc = 0; + int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); @@ -3337,20 +3354,23 @@ static int __init light_init(struct ibm_init_struct *iibm) tp_features.light_status = acpi_evalf(ec_handle, NULL, "KBLT", "qv"); - vdbg_printk(TPACPI_DBG_INIT, "light is %s\n", - str_supported(tp_features.light)); + vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", + str_supported(tp_features.light), + str_supported(tp_features.light_status)); - if (tp_features.light) { - rc = led_classdev_register(&tpacpi_pdev->dev, - &tpacpi_led_thinklight.led_classdev); - } + if (!tp_features.light) + return 1; + + rc = led_classdev_register(&tpacpi_pdev->dev, + &tpacpi_led_thinklight.led_classdev); if (rc < 0) { tp_features.light = 0; tp_features.light_status = 0; - } else { - rc = (tp_features.light)? 0 : 1; + } else { + rc = 0; } + return rc; } @@ -3978,7 +3998,6 @@ static void led_exit(void) } kfree(tpacpi_leds); - tpacpi_leds = NULL; } static int __init led_init(struct ibm_init_struct *iibm) @@ -4802,7 +4821,6 @@ static void brightness_exit(void) vdbg_printk(TPACPI_DBG_EXIT, "calling backlight_device_unregister()\n"); backlight_device_unregister(ibm_backlight_device); - ibm_backlight_device = NULL; } } @@ -5764,11 +5782,16 @@ static int __init fan_init(struct ibm_init_struct *iibm) fan_control_access_mode != TPACPI_FAN_WR_NONE) { rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); - if (!(rc < 0)) - rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, - &driver_attr_fan_watchdog); if (rc < 0) return rc; + + rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, + &driver_attr_fan_watchdog); + if (rc < 0) { + sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, + &fan_attr_group); + return rc; + } return 0; } else return 1; -- cgit v1.1 From 24e45bbe695719dca8c20e03d386eb6ea86526b5 Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Tue, 3 Jun 2008 23:36:11 -0300 Subject: thinkpad-acpi: fix LED handling on older ThinkPads The less tested codepaths for LED handling, used on ThinkPads 570, 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 and maybe a few others, would write data to kernel memory it had no business touching, for leds number 3 and above. If one is lucky, that illegal write would cause an OOPS, but chances are it would silently corrupt a byte. The problem was introduced in commit af116101, "ACPI: thinkpad-acpi: add sysfs led class support to thinkpad leds (v3.2)". Fix the bug by refactoring the entire code to be far more obvious on what it wants to do. Also do some defensive "constification". Issue reported by Karol Lewandowski (he's an lucky guy and got an OOPS instead of silent corruption :-) ). Root cause of the OOPS identified by Adrian Bunk . Thanks, Adrian! Signed-off-by: Henrique de Moraes Holschuh Tested-by: Karol Lewandowski Signed-off-by: Len Brown --- drivers/misc/thinkpad_acpi.c | 55 ++++++++++++++++++++++---------------------- 1 file changed, 28 insertions(+), 27 deletions(-) (limited to 'drivers/misc') diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c index 58973da..b596929 100644 --- a/drivers/misc/thinkpad_acpi.c +++ b/drivers/misc/thinkpad_acpi.c @@ -3853,7 +3853,7 @@ static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { "tpacpi::standby", }; -static int led_get_status(unsigned int led) +static int led_get_status(const unsigned int led) { int status; enum led_status_t led_s; @@ -3877,41 +3877,42 @@ static int led_get_status(unsigned int led) /* not reached */ } -static int led_set_status(unsigned int led, enum led_status_t ledstatus) +static int led_set_status(const unsigned int led, + const enum led_status_t ledstatus) { /* off, on, blink. Index is led_status_t */ - static const int led_sled_arg1[] = { 0, 1, 3 }; - static const int led_exp_hlbl[] = { 0, 0, 1 }; /* led# * */ - static const int led_exp_hlcl[] = { 0, 1, 1 }; /* led# * */ - static const int led_led_arg1[] = { 0, 0x80, 0xc0 }; + static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; + static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; int rc = 0; switch (led_supported) { case TPACPI_LED_570: - /* 570 */ - led = 1 << led; - if (!acpi_evalf(led_handle, NULL, NULL, "vdd", - led, led_sled_arg1[ledstatus])) - rc = -EIO; - break; + /* 570 */ + if (led > 7) + return -EINVAL; + if (!acpi_evalf(led_handle, NULL, NULL, "vdd", + (1 << led), led_sled_arg1[ledstatus])) + rc = -EIO; + break; case TPACPI_LED_OLD: - /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ - led = 1 << led; - rc = ec_write(TPACPI_LED_EC_HLMS, led); - if (rc >= 0) - rc = ec_write(TPACPI_LED_EC_HLBL, - led * led_exp_hlbl[ledstatus]); - if (rc >= 0) - rc = ec_write(TPACPI_LED_EC_HLCL, - led * led_exp_hlcl[ledstatus]); - break; + /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ + if (led > 7) + return -EINVAL; + rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); + if (rc >= 0) + rc = ec_write(TPACPI_LED_EC_HLBL, + (ledstatus == TPACPI_LED_BLINK) << led); + if (rc >= 0) + rc = ec_write(TPACPI_LED_EC_HLCL, + (ledstatus != TPACPI_LED_OFF) << led); + break; case TPACPI_LED_NEW: - /* all others */ - if (!acpi_evalf(led_handle, NULL, NULL, "vdd", - led, led_led_arg1[ledstatus])) - rc = -EIO; - break; + /* all others */ + if (!acpi_evalf(led_handle, NULL, NULL, "vdd", + led, led_led_arg1[ledstatus])) + rc = -EIO; + break; default: rc = -ENXIO; } -- cgit v1.1