mirror of https://gitee.com/openkylin/linux.git
e27a9eca5d
This commit fixes a "maybe-uninitialized" build failure in
arch/mips/kvm/tlb.c when KVM, DYNAMIC_DEBUG and JUMP_LABEL are all
enabled. The failure is:
In file included from ./include/linux/printk.h:329:0,
from ./include/linux/kernel.h:13,
from ./include/asm-generic/bug.h:15,
from ./arch/mips/include/asm/bug.h:41,
from ./include/linux/bug.h:4,
from ./include/linux/thread_info.h:11,
from ./include/asm-generic/current.h:4,
from ./arch/mips/include/generated/asm/current.h:1,
from ./include/linux/sched.h:11,
from arch/mips/kvm/tlb.c:13:
arch/mips/kvm/tlb.c: In function ‘kvm_mips_host_tlb_inv’:
./include/linux/dynamic_debug.h:126:3: error: ‘idx_kernel’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
__dynamic_pr_debug(&descriptor, pr_fmt(fmt), \
^~~~~~~~~~~~~~~~~~
arch/mips/kvm/tlb.c:169:16: note: ‘idx_kernel’ was declared here
int idx_user, idx_kernel;
^~~~~~~~~~
There is a similar error relating to "idx_user". Both errors were
observed with GCC 6.
As far as I can tell, it is impossible for either idx_user or idx_kernel
to be uninitialized when they are later read in the calls to kvm_debug,
but to satisfy the compiler, add zero initializers to both variables.
Signed-off-by: James Cowgill <James.Cowgill@imgtec.com>
Fixes:
|
||
|---|---|---|
| .. | ||
| 00README.txt | ||
| Kconfig | ||
| Makefile | ||
| callback.c | ||
| commpage.c | ||
| commpage.h | ||
| dyntrans.c | ||
| emulate.c | ||
| entry.c | ||
| fpu.S | ||
| hypcall.c | ||
| interrupt.c | ||
| interrupt.h | ||
| mips.c | ||
| mmu.c | ||
| msa.S | ||
| stats.c | ||
| tlb.c | ||
| trace.h | ||
| trap_emul.c | ||
| vz.c | ||