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FAILED: patch "[PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f480ea90b9dd7dfcf9031c82abc294f86d7db435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar(a)gmail.com> Date: Sat, 27 Jan 2018 17:28:34 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890(a)mail.ru Signed-off-by: Pali Rohár <pali.rohar(a)gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable(a)vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index aef4f8317ae2..3f8b4e482b64 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1038,6 +1053,23 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst { } }; +/* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -1060,6 +1092,12 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { pr_warn("broken Dell BIOS detected, disallow fan type call\n"); if (!force)

7 years, 8 months

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FAILED: patch "[PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f480ea90b9dd7dfcf9031c82abc294f86d7db435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar(a)gmail.com> Date: Sat, 27 Jan 2018 17:28:34 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890(a)mail.ru Signed-off-by: Pali Rohár <pali.rohar(a)gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable(a)vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index aef4f8317ae2..3f8b4e482b64 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1038,6 +1053,23 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst { } }; +/* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -1060,6 +1092,12 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { pr_warn("broken Dell BIOS detected, disallow fan type call\n"); if (!force)

7 years, 8 months

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FAILED: patch "[PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720" failed to apply to 4.13-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.13-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f480ea90b9dd7dfcf9031c82abc294f86d7db435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar(a)gmail.com> Date: Sat, 27 Jan 2018 17:28:34 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890(a)mail.ru Signed-off-by: Pali Rohár <pali.rohar(a)gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable(a)vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index aef4f8317ae2..3f8b4e482b64 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1038,6 +1053,23 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst { } }; +/* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -1060,6 +1092,12 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { pr_warn("broken Dell BIOS detected, disallow fan type call\n"); if (!force)

7 years, 8 months

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FAILED: patch "[PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f480ea90b9dd7dfcf9031c82abc294f86d7db435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar(a)gmail.com> Date: Sat, 27 Jan 2018 17:28:34 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890(a)mail.ru Signed-off-by: Pali Rohár <pali.rohar(a)gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable(a)vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index aef4f8317ae2..3f8b4e482b64 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1038,6 +1053,23 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst { } }; +/* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -1060,6 +1092,12 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { pr_warn("broken Dell BIOS detected, disallow fan type call\n"); if (!force)

7 years, 8 months

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FAILED: patch "[PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720" failed to apply to 4.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f480ea90b9dd7dfcf9031c82abc294f86d7db435 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pali=20Roh=C3=A1r?= <pali.rohar(a)gmail.com> Date: Sat, 27 Jan 2018 17:28:34 +0100 Subject: [PATCH] hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890(a)mail.ru Signed-off-by: Pali Rohár <pali.rohar(a)gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable(a)vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux(a)roeck-us.net> diff --git a/drivers/hwmon/dell-smm-hwmon.c b/drivers/hwmon/dell-smm-hwmon.c index aef4f8317ae2..3f8b4e482b64 100644 --- a/drivers/hwmon/dell-smm-hwmon.c +++ b/drivers/hwmon/dell-smm-hwmon.c @@ -76,6 +76,7 @@ static uint i8k_fan_mult = I8K_FAN_MULT; static uint i8k_pwm_mult; static uint i8k_fan_max = I8K_FAN_HIGH; static bool disallow_fan_type_call; +static bool disallow_fan_support; #define I8K_HWMON_HAVE_TEMP1 (1 << 0) #define I8K_HWMON_HAVE_TEMP2 (1 << 1) @@ -242,6 +243,9 @@ static int i8k_get_fan_status(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : regs.eax & 0xff; } @@ -253,6 +257,9 @@ static int i8k_get_fan_speed(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = fan & 0xff; return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -264,7 +271,7 @@ static int _i8k_get_fan_type(int fan) { struct smm_regs regs = { .eax = I8K_SMM_GET_FAN_TYPE, }; - if (disallow_fan_type_call) + if (disallow_fan_support || disallow_fan_type_call) return -EINVAL; regs.ebx = fan & 0xff; @@ -289,6 +296,9 @@ static int i8k_get_fan_nominal_speed(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_GET_NOM_SPEED, }; + if (disallow_fan_support) + return -EINVAL; + regs.ebx = (fan & 0xff) | (speed << 8); return i8k_smm(&regs) ? : (regs.eax & 0xffff) * i8k_fan_mult; } @@ -300,6 +310,9 @@ static int i8k_set_fan(int fan, int speed) { struct smm_regs regs = { .eax = I8K_SMM_SET_FAN, }; + if (disallow_fan_support) + return -EINVAL; + speed = (speed < 0) ? 0 : ((speed > i8k_fan_max) ? i8k_fan_max : speed); regs.ebx = (fan & 0xff) | (speed << 8); @@ -772,6 +785,8 @@ static struct attribute *i8k_attrs[] = { static umode_t i8k_is_visible(struct kobject *kobj, struct attribute *attr, int index) { + if (disallow_fan_support && index >= 8) + return 0; if (disallow_fan_type_call && (index == 9 || index == 12 || index == 15)) return 0; @@ -1038,6 +1053,23 @@ static const struct dmi_system_id i8k_blacklist_fan_type_dmi_table[] __initconst { } }; +/* + * On some machines all fan related SMM functions implemented by Dell BIOS + * firmware freeze kernel for about 500ms. Until Dell fixes these problems fan + * support for affected blacklisted Dell machines stay disabled. + * See bug: https://bugzilla.kernel.org/show_bug.cgi?id=195751 + */ +static struct dmi_system_id i8k_blacklist_fan_support_dmi_table[] __initdata = { + { + .ident = "Dell Inspiron 7720", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Inspiron 7720"), + }, + }, + { } +}; + /* * Probe for the presence of a supported laptop. */ @@ -1060,6 +1092,12 @@ static int __init i8k_probe(void) i8k_get_dmi_data(DMI_BIOS_VERSION)); } + if (dmi_check_system(i8k_blacklist_fan_support_dmi_table)) { + pr_warn("broken Dell BIOS detected, disallow fan support\n"); + if (!force) + disallow_fan_support = true; + } + if (dmi_check_system(i8k_blacklist_fan_type_dmi_table)) { pr_warn("broken Dell BIOS detected, disallow fan type call\n"); if (!force)

7 years, 8 months

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FAILED: patch "[PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup" failed to apply to 4.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb Mon Sep 17 00:00:00 2001 From: Nikolay Borisov <nborisov(a)suse.com> Date: Tue, 5 Dec 2017 09:29:19 +0200 Subject: [PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable(a)vger.kernel.org Signed-off-by: Nikolay Borisov <nborisov(a)suse.com> Reviewed-by: Qu Wenruo <wqu(a)suse.com> Reviewed-by: David Sterba <dsterba(a)suse.com> Signed-off-by: David Sterba <dsterba(a)suse.com> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 034d7333b14d..9ad8c9321c8f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2116,8 +2116,15 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, 0, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, 0, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE);

7 years, 8 months

1
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FAILED: patch "[PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup" failed to apply to 4.9-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb Mon Sep 17 00:00:00 2001 From: Nikolay Borisov <nborisov(a)suse.com> Date: Tue, 5 Dec 2017 09:29:19 +0200 Subject: [PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable(a)vger.kernel.org Signed-off-by: Nikolay Borisov <nborisov(a)suse.com> Reviewed-by: Qu Wenruo <wqu(a)suse.com> Reviewed-by: David Sterba <dsterba(a)suse.com> Signed-off-by: David Sterba <dsterba(a)suse.com> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 034d7333b14d..9ad8c9321c8f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2116,8 +2116,15 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, 0, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, 0, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE);

7 years, 8 months

1
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FAILED: patch "[PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From f3038ee3a3f1017a1cbe9907e31fa12d366c5dcb Mon Sep 17 00:00:00 2001 From: Nikolay Borisov <nborisov(a)suse.com> Date: Tue, 5 Dec 2017 09:29:19 +0200 Subject: [PATCH] btrfs: Handle btrfs_set_extent_delalloc failure in fixup worker This function was introduced by 247e743cbe6e ("Btrfs: Use async helpers to deal with pages that have been improperly dirtied") and it didn't do any error handling then. This function might very well fail in ENOMEM situation, yet it's not handled, this could lead to inconsistent state. So let's handle the failure by setting the mapping error bit. Cc: stable(a)vger.kernel.org Signed-off-by: Nikolay Borisov <nborisov(a)suse.com> Reviewed-by: Qu Wenruo <wqu(a)suse.com> Reviewed-by: David Sterba <dsterba(a)suse.com> Signed-off-by: David Sterba <dsterba(a)suse.com> diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 034d7333b14d..9ad8c9321c8f 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -2116,8 +2116,15 @@ static void btrfs_writepage_fixup_worker(struct btrfs_work *work) goto out; } - btrfs_set_extent_delalloc(inode, page_start, page_end, 0, &cached_state, - 0); + ret = btrfs_set_extent_delalloc(inode, page_start, page_end, 0, + &cached_state, 0); + if (ret) { + mapping_set_error(page->mapping, ret); + end_extent_writepage(page, ret, page_start, page_end); + ClearPageChecked(page); + goto out; + } + ClearPageChecked(page); set_page_dirty(page); btrfs_delalloc_release_extents(BTRFS_I(inode), PAGE_SIZE);

7 years, 8 months

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FAILED: patch "[PATCH] ASoC: acpi: fix machine driver selection based on quirk" failed to apply to 4.14-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 4.14-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 5c256045b87b8aa8e5bc9d2e2fdc0802351c1f99 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart <pierre-louis.bossart(a)linux.intel.com> Date: Fri, 5 Jan 2018 14:55:33 -0600 Subject: [PATCH] ASoC: acpi: fix machine driver selection based on quirk MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The ACPI/machine-driver code refactoring introduced in 4.13 introduced a regression for cases where we need a DMI-based quirk to select the machine driver (the BIOS reports an invalid HID). The fix is just to make sure the results of the quirk are actually used. Fixes: 54746dabf770 ('ASoC: Improve machine driver selection based on quirk data') Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=96691 Tested-by: Nicole Færber <nicole.faerber(a)dpin.de> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart(a)linux.intel.com> Signed-off-by: Mark Brown <broonie(a)kernel.org> Cc: stable(a)vger.kernel.org diff --git a/sound/soc/soc-acpi.c b/sound/soc/soc-acpi.c index f21df28bc28e..d4dd2efea45e 100644 --- a/sound/soc/soc-acpi.c +++ b/sound/soc/soc-acpi.c @@ -84,11 +84,9 @@ snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines) for (mach = machines; mach->id[0]; mach++) { if (snd_soc_acpi_check_hid(mach->id) == true) { - if (mach->machine_quirk == NULL) - return mach; - - if (mach->machine_quirk(mach) != NULL) - return mach; + if (mach->machine_quirk) + mach = mach->machine_quirk(mach); + return mach; } } return NULL;

7 years, 8 months

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Re: 4.14.x - KVM guests crashing

by Greg KH

On Sun, Feb 11, 2018 at 08:25:00AM +0100, Nikola Ciprich wrote: > Hi, > > My crashes started after switching from 4.9 to 4.14. Rumors have it they > > started somewhere 4.13-ish and are gone 4.15. Will check if time > > permits. > > it's been introduced by 4.14 and seems to be fixed by > 2a266f23550be997d783f27e704b9b40c4010292 (no crash with it applied so > far for me). Greg already has it queued for next 4.14.x release. I do? I don't see it in my queue anywhere. Are you sure I've applied it? confused, greg k-h

7 years, 8 months

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