/* * kselftest.h: kselftest framework return codes to include from * selftests. * * Copyright (c) 2014 Shuah Khan * Copyright (c) 2014 Samsung Electronics Co., Ltd. * * This file is released under the GPLv2. */ #ifndef __KSELFTEST_H #define __KSELFTEST_H #include #include /* define kselftest exit codes */ #define KSFT_PASS 0 #define KSFT_FAIL 1 #define KSFT_XFAIL 2 #define KSFT_XPASS 3 #define KSFT_SKIP 4 /* counters */ struct ksft_count { unsigned int ksft_pass; unsigned int ksft_fail; unsigned int ksft_xfail; unsigned int ksft_xpass; unsigned int ksft_xskip; }; static struct ksft_count ksft_cnt; static inline void ksft_inc_pass_cnt(void) { ksft_cnt.ksft_pass++; } static inline void ksft_inc_fail_cnt(void) { ksft_cnt.ksft_fail++; } static inline void ksft_inc_xfail_cnt(void) { ksft_cnt.ksft_xfail++; } static inline void ksft_inc_xpass_cnt(void) { ksft_cnt.ksft_xpass++; } static inline void ksft_inc_xskip_cnt(void) { ksft_cnt.ksft_xskip++; } static inline void ksft_print_cnts(void) { printf("Pass: %d Fail: %d Xfail: %d Xpass: %d, Xskip: %d\n", ksft_cnt.ksft_pass, ksft_cnt.ksft_fail, ksft_cnt.ksft_xfail, ksft_cnt.ksft_xpass, ksft_cnt.ksft_xskip); } static inline int ksft_exit_pass(void) { exit(KSFT_PASS); } static inline int ksft_exit_fail(void) { exit(KSFT_FAIL); } static inline int ksft_exit_xfail(void) { exit(KSFT_XFAIL); } static inline int ksft_exit_xpass(void) { exit(KSFT_XPASS); } static inline int ksft_exit_skip(void) { exit(KSFT_SKIP); } #endif /* __KSELFTEST_H */ ='/cgit.cgi/linux/net-next.git/refs/?id=c8f325a59cfc718d13a50fbc746ed9b415c25e92'>refslogtreecommitdiff
path: root/drivers/usb/musb/musb_io.h
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authorArd Biesheuvel <ard.biesheuvel@linaro.org>2017-02-01 17:45:02 +0000
committerIngo Molnar <mingo@kernel.org>2017-02-01 21:17:49 +0100
commitc8f325a59cfc718d13a50fbc746ed9b415c25e92 (patch)
treed53fbdac9d0781e39a13b2ac6b2bd258cf3b4140 /drivers/usb/musb/musb_io.h
parentbf29bddf0417a4783da3b24e8c9e017ac649326f (diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/musb/musb_io.h')
6/efi: Only map RAM into EFI page tables if in mixed-mode") Link: http://lkml.kernel.org/r/20170127222552.22336-1-matt@codeblueprint.co.uk [ Tidied up the changelog and the comment. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/musb/tusb6010_omap.c')