user/sven/linux.git/drivers/firmware, branch v4.8.13

Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2016-09-13T19:02:00Z

Pull EFI fixes from Ingo Molnar: "This contains a Xen fix, an arm64 fix and a race condition / robustization set of fixes related to ExitBootServices() usage and boundary conditions" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/efi: Use efi_exit_boot_services() efi/libstub: Use efi_exit_boot_services() in FDT efi/libstub: Introduce ExitBootServices helper efi/libstub: Allocate headspace in efi_get_memory_map() efi: Fix handling error value in fdt_find_uefi_params efi: Make for_each_efi_memory_desc_in_map() cope with running on Xen

Merge branch 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

2016-09-08T19:19:24Z

Pull dmi fix from Jean Delvare. * 'dmi-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging: dmi-id: don't free dev structure after calling device_register

dmi-id: don't free dev structure after calling device_register

2016-09-08T08:35:50Z

dmi_dev is freed in error exit code but, according to the document of device_register, it should never directly free device structure after calling this function, even if it returned an error! Use put_device() instead. Signed-off-by: Allen Hung Signed-off-by: Jean Delvare

efi/libstub: Use efi_exit_boot_services() in FDT

2016-09-05T11:32:36Z

The FDT code directly calls ExitBootServices. This is inadvisable as the UEFI spec details a complex set of errors, race conditions, and API interactions that the caller of ExitBootServices must get correct. The FDT code does not handle EFI_INVALID_PARAMETER as required by the spec, which causes intermittent boot failures on the Qualcomm Technologies QDF2432. Call the efi_exit_boot_services() helper intead, which handles the EFI_INVALID_PARAMETER scenario properly. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming

efi/libstub: Introduce ExitBootServices helper

2016-09-05T11:32:28Z

The spec allows ExitBootServices to fail with EFI_INVALID_PARAMETER if a race condition has occurred where the EFI has updated the memory map after the stub grabbed a reference to the map. The spec defines a retry proceedure with specific requirements to handle this scenario. This scenario was previously observed on x86 - commit d3768d885c6c ("x86, efi: retry ExitBootServices() on failure") but the current fix is not spec compliant and the scenario is now observed on the Qualcomm Technologies QDF2432 via the FDT stub which does not handle the error and thus causes boot failures. The user will notice the boot failure as the kernel is not executed and the system may drop back to a UEFI shell, but will be unresponsive to input and the system will require a power cycle to recover. Add a helper to the stub library that correctly adheres to the spec in the case of EFI_INVALID_PARAMETER from ExitBootServices and can be universally used across all stub implementations. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming

efi/libstub: Allocate headspace in efi_get_memory_map()

2016-09-05T11:18:17Z

efi_get_memory_map() allocates a buffer to store the memory map that it retrieves. This buffer may need to be reused by the client after ExitBootServices() is called, at which point allocations are not longer permitted. To support this usecase, provide the allocated buffer size back to the client, and allocate some additional headroom to account for any reasonable growth in the map that is likely to happen between the call to efi_get_memory_map() and the client reusing the buffer. Signed-off-by: Jeffrey Hugo Cc: Ard Biesheuvel Cc: Mark Rutland Cc: Leif Lindholm Cc: Ingo Molnar Cc: Signed-off-by: Matt Fleming

efi: Fix handling error value in fdt_find_uefi_params

2016-09-05T10:26:42Z

of_get_flat_dt_subnode_by_name can return negative value in case of error. Assigning the result to unsigned variable and checking if the variable is lesser than zero is incorrect and always false. The patch fixes it by using signed variable to check the result. The problem has been detected using semantic patch scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci Signed-off-by: Andrzej Hajda Cc: Bartlomiej Zolnierkiewicz Cc: Marek Szyprowski Cc: Ingo Molnar Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: Shawn Lin Cc: Mark Rutland Cc: Signed-off-by: Matt Fleming

Merge tag 'vexpress-fixes-4.8-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into fixes

2016-08-26T00:00:10Z

SCPI/Vexpress fixes for v4.8-rc Couple of minor fixes to add missing of_node_put after calling of_parse_phandle in SCPI and vexpress-config bus drivers(Peter Chen) * tag 'vexpress-fixes-4.8-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux: firmware: arm_scpi: add missing of_node_put after calling of_parse_phandle bus: vexpress-config: add missing of_node_put after calling of_parse_phandle Signed-off-by: Olof Johansson

efi/capsule: Allocate whole capsule into virtual memory

2016-08-11T11:55:36Z

According to UEFI 2.6 section 7.5.3, the capsule should be in contiguous virtual memory and firmware may consume the capsule immediately. To correctly implement this functionality, the kernel driver needs to vmap the entire capsule at the time it is made available to firmware. The virtual allocation of the capsule update has been changed from kmap, which was only allocating the first page of the update, to vmap, and allocates the entire data payload. Signed-off-by: Austin Christ Signed-off-by: Matt Fleming Reviewed-by: Matt Fleming Reviewed-by: Lee, Chun-Yi Cc: # v4.7 Cc: Andy Lutomirski Cc: Ard Biesheuvel Cc: Borislav Petkov Cc: Brian Gerst Cc: Bryan O'Donoghue Cc: Denys Vlasenko Cc: H. Peter Anvin Cc: Josh Poimboeuf Cc: Kweh Hock Leong Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-efi@vger.kernel.org Link: http://lkml.kernel.org/r/1470912120-22831-3-git-send-email-matt@codeblueprint.co.uk Signed-off-by: Ingo Molnar

firmware: arm_scpi: add missing of_node_put after calling of_parse_phandle

2016-08-08T13:31:09Z

of_node_put needs to be called when the device node which is got from of_parse_phandle has finished using it. Besides, of_address_to_resource always returns -EINVAL for error, delete the assignment for ret. Signed-off-by: Peter Chen Signed-off-by: Sudeep Holla