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| author | Jonas Gorski <jogo@openwrt.org> | 2015-07-05 21:31:54 +0000 |
|---|---|---|
| committer | Jonas Gorski <jogo@openwrt.org> | 2015-07-05 21:31:54 +0000 |
| commit | cf304f5a5e611e60fce5a0dda2a144f8ca56df3c (patch) | |
| tree | 1fb4586cdc0d70d361f6b3f9e67251a9a155f48f /target/linux/generic/patches-4.1/304-mips_disable_fpu.patch | |
| parent | 1e8c3d2769fcfc0ec0744281bdbb96dfda6ccf32 (diff) | |
| download | mtk-20170518-cf304f5a5e611e60fce5a0dda2a144f8ca56df3c.zip mtk-20170518-cf304f5a5e611e60fce5a0dda2a144f8ca56df3c.tar.gz mtk-20170518-cf304f5a5e611e60fce5a0dda2a144f8ca56df3c.tar.bz2 | |
kernel: mips_disable_fpu: initialize fault_addr in fpu_emulator_cop1Handler
Code calling fpu_emulator_cop1Handler will pass on fault_addr, making gcc
complain about it not being initialized when the FPU emulator is disabled.
Fixes:
arch/mips/kernel/traps.c: In function 'do_fpe':
arch/mips/kernel/traps.c:864:22: error: 'fault_addr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
process_fpemu_return(sig, fault_addr, fcr31);
^
arch/mips/kernel/traps.c: In function 'do_ri':
arch/mips/kernel/traps.c:806:22: error: 'fault_addr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
process_fpemu_return(sig, fault_addr, fcr31);
^
arch/mips/kernel/traps.c:763:15: note: 'fault_addr' was declared here
void __user *fault_addr;
^
arch/mips/kernel/traps.c: In function 'do_cpu':
arch/mips/kernel/traps.c:1421:28: error: 'fault_addr' may be used uninitialized in this function [-Werror=maybe-uninitialized]
if (!process_fpemu_return(sig, fault_addr, fcr31) && !err)
^
cc1: all warnings being treated as errors
make[7]: *** [arch/mips/kernel/traps.o] Error 1
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46184
Diffstat (limited to 'target/linux/generic/patches-4.1/304-mips_disable_fpu.patch')
| -rw-r--r-- | target/linux/generic/patches-4.1/304-mips_disable_fpu.patch | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/target/linux/generic/patches-4.1/304-mips_disable_fpu.patch b/target/linux/generic/patches-4.1/304-mips_disable_fpu.patch index 6237d31..e07135b 100644 --- a/target/linux/generic/patches-4.1/304-mips_disable_fpu.patch +++ b/target/linux/generic/patches-4.1/304-mips_disable_fpu.patch @@ -82,7 +82,7 @@ v2: incorporated changes suggested by Jonas Gorski #ifdef CONFIG_DEBUG_FS struct mips_fpu_emulator_stats { -@@ -66,6 +67,20 @@ extern int do_dsemulret(struct pt_regs * +@@ -66,6 +67,21 @@ extern int do_dsemulret(struct pt_regs * extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, int has_fpu, void *__user *fault_addr); @@ -96,6 +96,7 @@ v2: incorporated changes suggested by Jonas Gorski + struct mips_fpu_struct *ctx, int has_fpu, + void *__user *fault_addr) +{ ++ *fault_addr = NULL; + return SIGILL; /* we don't speak MIPS FPU */ +} +#endif /* CONFIG_MIPS_FPU_EMULATOR */ |