/* * thunks.S - assembly helpers for mixed-bitness code * Copyright (c) 2015 Andrew Lutomirski * * This program is free software; you can redistribute it and/or modify * it under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * These are little helpers that make it easier to switch bitness on * the fly. */ .text .global call32_from_64 .type call32_from_64, @function call32_from_64: // rdi: stack to use // esi: function to call // Save registers pushq %rbx pushq %rbp pushq %r12 pushq %r13 pushq %r14 pushq %r15 pushfq // Switch stacks mov %rsp,(%rdi) mov %rdi,%rsp // Switch to compatibility mode pushq $0x23 /* USER32_CS */ pushq $1f lretq 1: .code32 // Call the function call *%esi // Switch back to long mode jmp $0x33,$1f .code64 1: // Restore the stack mov (%rsp),%rsp // Restore registers popfq popq %r15 popq %r14 popq %r13 popq %r12 popq %rbp popq %rbx ret .size call32_from_64, .-call32_from_64 on> net-next plumbingsTobias Klauser
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path: root/drivers/usb/isp1760/isp1760-if.c
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authorMarkus Mayer <mmayer@broadcom.com>2016-12-19 12:10:28 -0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-01-27 11:43:49 +0100
commit3c223c19aea85d3dda1416c187915f4a30b04b1f (patch)
tree2d2021f8161db3e9ed38b9a966a225b66dff8e58 /drivers/usb/isp1760/isp1760-if.c
parent9b02c54bc951fca884ba5719f42a27e8240965bf (diff)
cpufreq: brcmstb-avs-cpufreq: properly retrieve P-state upon suspend
The AVS GET_PMAP command does return a P-state along with the P-map information. However, that P-state is the initial P-state when the P-map was first downloaded to AVS. It is *not* the current P-state. Therefore, we explicitly retrieve the P-state using the GET_PSTATE command. Signed-off-by: Markus Mayer <mmayer@broadcom.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/usb/isp1760/isp1760-if.c')