+++ /dev/null
-From d78c8e32890ef7eca79ffd67c96022c7f9d8cce4 Mon Sep 17 00:00:00 2001
-From: Anders Roxell <anders.roxell@linaro.org>
-Date: Wed, 10 Aug 2022 13:43:18 +0200
-Subject: powerpc/mm: Rearrange if-else block to avoid clang warning
-
-From: Anders Roxell <anders.roxell@linaro.org>
-
-commit d78c8e32890ef7eca79ffd67c96022c7f9d8cce4 upstream.
-
-Clang warns:
-
- arch/powerpc/mm/book3s64/radix_tlb.c:1191:23: error: variable 'hstart' is uninitialized when used here
- __tlbiel_va_range(hstart, hend, pid,
- ^~~~~~
- arch/powerpc/mm/book3s64/radix_tlb.c:1191:31: error: variable 'hend' is uninitialized when used here
- __tlbiel_va_range(hstart, hend, pid,
- ^~~~
-
-Rework the 'if (IS_ENABLE(CONFIG_TRANSPARENT_HUGEPAGE))' so hstart/hend
-is always initialized to silence the warnings. That will also simplify
-the 'else' path. Clang is getting confused with these warnings, but the
-warnings is a false-positive.
-
-Suggested-by: Arnd Bergmann <arnd@arndb.de>
-Suggested-by: Nathan Chancellor <nathan@kernel.org>
-Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
-Reviewed-by: Nathan Chancellor <nathan@kernel.org>
-Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
-Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-Link: https://lore.kernel.org/r/20220810114318.3220630-1-anders.roxell@linaro.org
-Signed-off-by: Daniel Díaz <daniel.diaz@linaro.org>
-Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
----
- arch/powerpc/mm/book3s64/radix_tlb.c | 11 ++++-------
- 1 file changed, 4 insertions(+), 7 deletions(-)
-
-diff --git a/arch/powerpc/mm/book3s64/radix_tlb.c b/arch/powerpc/mm/book3s64/radix_tlb.c
-index 50b70105364f..e50bc5fc7ddf 100644
---- a/arch/powerpc/mm/book3s64/radix_tlb.c
-+++ b/arch/powerpc/mm/book3s64/radix_tlb.c
-@@ -1184,15 +1184,12 @@ static inline void __radix__flush_tlb_range(struct mm_struct *mm,
- }
- }
- } else {
-- bool hflush = false;
-+ bool hflush;
- unsigned long hstart, hend;
-
-- if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) {
-- hstart = (start + PMD_SIZE - 1) & PMD_MASK;
-- hend = end & PMD_MASK;
-- if (hstart < hend)
-- hflush = true;
-- }
-+ hstart = (start + PMD_SIZE - 1) & PMD_MASK;
-+ hend = end & PMD_MASK;
-+ hflush = IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE) && hstart < hend;
-
- if (type == FLUSH_TYPE_LOCAL) {
- asm volatile("ptesync": : :"memory");
---
-2.39.2
-