From 469dd1c4ac0869cf7d1f87eac9b5a93865c10b76 Mon Sep 17 00:00:00 2001 From: Fabio Valentini Date: Mon, 11 Mar 2013 19:16:34 +0000 Subject: [PATCH 1/3] ACPI / PM: fix suspend and resume on Sony Vaio VGN-FW21M Add Sony Vaio VGN-FW21M to the device blacklist in drivers/acpi/sleep.c. Fixes suspend/resume on this device (device no longer reboots instead of resuming). References: https://bugzilla.kernel.org/show_bug.cgi?id=55001 Signed-off-by: Fabio Valentini Signed-off-by: Rafael J. Wysocki --- drivers/acpi/sleep.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 24213033fbae..9c1a435d10e6 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -193,6 +193,14 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { }, { .callback = init_nvs_nosave, + .ident = "Sony Vaio VGN-FW21M", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FW21M"), + }, + }, + { + .callback = init_nvs_nosave, .ident = "Sony Vaio VPCEB17FX", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), From aaf9d93be71c68558c25b4052ac979ee6b7eb809 Mon Sep 17 00:00:00 2001 From: Chen Gong Date: Tue, 19 Mar 2013 06:48:07 +0000 Subject: [PATCH 2/3] ACPI / APEI: fix error status check condition for CPER In Table 18-289, ACPI5.0 SPEC, the error data length in CPER Generic Error Data Entry can be 0, which means this generic error data entry can have only one header. So fix the check conditon for it. Signed-off-by: Chen Gong Reviewed-by: Huang Ying Signed-off-by: Rafael J. Wysocki --- drivers/acpi/apei/cper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c index 1e5d8a40101e..fefc2ca7cc3e 100644 --- a/drivers/acpi/apei/cper.c +++ b/drivers/acpi/apei/cper.c @@ -405,7 +405,7 @@ int apei_estatus_check(const struct acpi_hest_generic_status *estatus) return rc; data_len = estatus->data_length; gdata = (struct acpi_hest_generic_data *)(estatus + 1); - while (data_len > sizeof(*gdata)) { + while (data_len >= sizeof(*gdata)) { gedata_len = gdata->error_data_length; if (gedata_len > data_len - sizeof(*gdata)) return -EINVAL; From b8b6611048b7b57b86fbdc9153649ad4dc52135f Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 11 Mar 2013 05:05:16 +0000 Subject: [PATCH 3/3] PCI / ACPI: hold acpi_scan_lock during root bus hotplug During merging the PCI tree with the PM/ACPI tree, Linus noticed that we don't use the same lock using patten about ACPI PCI root as acpiphp. Here apply the same locking patten, and we need to execute acpi_bus_hot_remove_device() via acpi_os_hotplug_execute() as it also holds acpi_scan_lock. [rjw: Changelog] Reported-by: Linus Torvalds Signed-off-by: Yinghai Lu No-objection-from: Bjorn Helgaas Signed-off-by: Rafael J. Wysocki --- drivers/acpi/pci_root.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 0ac546d5e53f..5ff173066127 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -646,6 +646,7 @@ static void handle_root_bridge_insertion(acpi_handle handle) static void handle_root_bridge_removal(struct acpi_device *device) { + acpi_status status; struct acpi_eject_event *ej_event; ej_event = kmalloc(sizeof(*ej_event), GFP_KERNEL); @@ -661,7 +662,9 @@ static void handle_root_bridge_removal(struct acpi_device *device) ej_event->device = device; ej_event->event = ACPI_NOTIFY_EJECT_REQUEST; - acpi_bus_hot_remove_device(ej_event); + status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device, ej_event); + if (ACPI_FAILURE(status)) + kfree(ej_event); } static void _handle_hotplug_event_root(struct work_struct *work) @@ -676,8 +679,9 @@ static void _handle_hotplug_event_root(struct work_struct *work) handle = hp_work->handle; type = hp_work->type; - root = acpi_pci_find_root(handle); + acpi_scan_lock_acquire(); + root = acpi_pci_find_root(handle); acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); switch (type) { @@ -711,6 +715,7 @@ static void _handle_hotplug_event_root(struct work_struct *work) break; } + acpi_scan_lock_release(); kfree(hp_work); /* allocated in handle_hotplug_event_bridge */ kfree(buffer.pointer); }