/* * 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 ck'>packet-rx-pump-back net-next plumbingsTobias Klauser
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authorStanislaw Gruszka <sgruszka@redhat.com>2017-01-29 12:40:52 +0100
committerKalle Valo <kvalo@codeaurora.org>2017-01-31 09:08:52 +0200
commit33e962c8871f015f5c8978384553dddcf5b81b22 (patch)
tree43aff96c2ee21d9e0fa2018457778a4de52053cd /include/soc/tegra/emc.h
parent575ddce0507789bf9830d089557d2199d2f91865 (diff)
rt2x00: fix clk_get call
clk_get() takes two arguments and might return ERR_PTR(), so we have to nullify pointer on that case, to do not break further call to clk_get_rate(). Reported-by: Felix Fietkau <nbd@nbd.name> Fixes: 34db70b92fae ("rt2x00: add copy of clk for soc devices") Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'include/soc/tegra/emc.h')