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Suggested-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Xin Li <xin@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
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Based on 1 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-or-later
has been chosen to replace the boilerplate/reference in 3029 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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On OLPC XO-1, the RTC is discovered via device tree from the arch
initcall. Don't let the PC platform register another one from its device
initcall, it's not going to work:
sysfs: cannot create duplicate filename '/devices/platform/rtc_cmos'
CPU: 0 PID: 1 Comm: swapper Not tainted 4.19.0-rc6 #12
Hardware name: OLPC XO/XO, BIOS OLPC Ver 1.00.01 06/11/2014
Call Trace:
dump_stack+0x16/0x18
sysfs_warn_dup+0x46/0x58
sysfs_create_dir_ns+0x76/0x9b
kobject_add_internal+0xed/0x209
? __schedule+0x3fa/0x447
kobject_add+0x5b/0x66
device_add+0x298/0x535
? insert_resource_conflict+0x2a/0x3e
platform_device_add+0x14d/0x192
? io_delay_init+0x19/0x19
platform_device_register+0x1c/0x1f
add_rtc_cmos+0x16/0x31
do_one_initcall+0x78/0x14a
? do_early_param+0x75/0x75
kernel_init_freeable+0x152/0x1e0
? rest_init+0xa2/0xa2
kernel_init+0x8/0xd5
ret_from_fork+0x2e/0x38
kobject_add_internal failed for rtc_cmos with -EEXIST, don't try to
register things with the same name in the same directory.
platform rtc_cmos: registered platform RTC device (no PNP device found)
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
CC: "H. Peter Anvin" <hpa@zytor.com>
CC: Ingo Molnar <mingo@redhat.com>
CC: x86-ml <x86@kernel.org>
Link: http://lkml.kernel.org/r/20181004160808.307738-1-lkundrak@v3.sk
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Add a driver to configure the XO-1 RTC via CS5536 MSRs, to be used as a
system wakeup source via olpc-xo1-pm.
Device detection is based on finding the relevant device tree node.
Signed-off-by: Daniel Drake <dsd@laptop.org>
Link: http://lkml.kernel.org/r/1309019658-1712-11-git-send-email-dsd@laptop.org
Acked-by: Andres Salomon <dilinger@queued.net>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Reviewed-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: devicetree-discuss@lists.ozlabs.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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