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| author | Jian-Hong Pan <jian-hong@endlessm.com> | 2019-04-12 16:01:53 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-16 19:43:42 +0200 |
| commit | 906b45fd16116e71a5b49d26f18a1cdfc1ded959 (patch) | |
| tree | e959bdcb028a92b031cbaa423fd1739d24b46044 /include | |
| parent | 6f8288c2da032911787b864aebd12ecf020ba082 (diff) | |
| download | linux-stable-906b45fd16116e71a5b49d26f18a1cdfc1ded959.tar.gz linux-stable-906b45fd16116e71a5b49d26f18a1cdfc1ded959.tar.bz2 linux-stable-906b45fd16116e71a5b49d26f18a1cdfc1ded959.zip | |
x86/reboot, efi: Use EFI reboot for Acer TravelMate X514-51T
[ Upstream commit 0082517fa4bce073e7cf542633439f26538a14cc ]
Upon reboot, the Acer TravelMate X514-51T laptop appears to complete the
shutdown process, but then it hangs in BIOS POST with a black screen.
The problem is intermittent - at some points it has appeared related to
Secure Boot settings or different kernel builds, but ultimately we have
not been able to identify the exact conditions that trigger the issue to
come and go.
Besides, the EFI mode cannot be disabled in the BIOS of this model.
However, after extensive testing, we observe that using the EFI reboot
method reliably avoids the issue in all cases.
So add a boot time quirk to use EFI reboot on such systems.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=203119
Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Cc: linux@endlessm.com
Link: http://lkml.kernel.org/r/20190412080152.3718-1-jian-hong@endlessm.com
[ Fix !CONFIG_EFI build failure, clarify the code and the changelog a bit. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/efi.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/efi.h b/include/linux/efi.h index 80b1b8faf503..e6711bf9f0d1 100644 --- a/include/linux/efi.h +++ b/include/linux/efi.h @@ -1433,7 +1433,12 @@ efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg, struct screen_info *si, efi_guid_t *proto, unsigned long size); -bool efi_runtime_disabled(void); +#ifdef CONFIG_EFI +extern bool efi_runtime_disabled(void); +#else +static inline bool efi_runtime_disabled(void) { return true; } +#endif + extern void efi_call_virt_check_flags(unsigned long flags, const char *call); /* |