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UPSTREAM: arm64/fp: Reindent fpsimd_save()

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Currently all the active code in fpsimd_save() is inside a check for
TIF_FOREIGN_FPSTATE. Reduce the indentation level by changing to return
from the function if TIF_FOREIGN_FPSTATE is set.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20211019172247.3045838-2-broonie@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
(cherry picked from commit 2d481bd3b6)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Bug: 233588291
Change-Id: I8174634596e5f1e09afa0d53cd86c26fbb9edfd9
This commit is contained in:
Mark Brown
2021-10-19 18:22:06 +01:00
committed by Will Deacon
parent 84319a03ee
commit 5262dd763a
1 changed files with 19 additions and 17 deletions
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36
arch/arm64/kernel/fpsimd.c
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@@ -318,24 +318,26 @@ static void fpsimd_save(void)
WARN_ON(!system_supports_fpsimd());
WARN_ON(!have_cpu_fpsimd_context());
if (!test_thread_flag(TIF_FOREIGN_FPSTATE)) {
if (IS_ENABLED(CONFIG_ARM64_SVE) &&
test_thread_flag(TIF_SVE)) {
if (WARN_ON(sve_get_vl() != last->sve_vl)) {
/*
* Can't save the user regs, so current would
* re-enter user with corrupt state.
* There's no way to recover, so kill it:
*/
force_signal_inject(SIGKILL, SI_KERNEL, 0, 0);
return;
}
if (test_thread_flag(TIF_FOREIGN_FPSTATE))
return;
sve_save_state((char *)last->sve_state +
sve_ffr_offset(last->sve_vl),
&last->st->fpsr);
} else
fpsimd_save_state(last->st);
if (IS_ENABLED(CONFIG_ARM64_SVE) &&
test_thread_flag(TIF_SVE)) {
if (WARN_ON(sve_get_vl() != last->sve_vl)) {
/*
* Can't save the user regs, so current would
* re-enter user with corrupt state.
* There's no way to recover, so kill it:
*/
force_signal_inject(SIGKILL, SI_KERNEL, 0, 0);
return;
}
sve_save_state((char *)last->sve_state +
sve_ffr_offset(last->sve_vl),
&last->st->fpsr);
} else {
fpsimd_save_state(last->st);
}
}