From: Harvey Harrison Date: Wed, 6 Feb 2008 21:39:44 +0000 (+0100) Subject: x86: fix sparse error in traps_32.c X-Git-Tag: firefly_0821_release~23006^2~11 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=deef79ef351225a9fe02e41a40cb125ed03a3e6b;p=firefly-linux-kernel-4.4.55.git x86: fix sparse error in traps_32.c This was being used to ensure the proper alignment of the FXSAVE/FXRSTOR data. This would create a sparse error in the _correct_ cases, hiding further warnings. Use BUILD_BUG_ON instead. Signed-off-by: Harvey Harrison Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/traps_32.c b/arch/x86/kernel/traps_32.c index 3cf72977d012..b22c01e05a18 100644 --- a/arch/x86/kernel/traps_32.c +++ b/arch/x86/kernel/traps_32.c @@ -1176,17 +1176,12 @@ void __init trap_init(void) #endif set_trap_gate(19,&simd_coprocessor_error); + /* + * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned. + * Generate a build-time error if the alignment is wrong. + */ + BUILD_BUG_ON(offsetof(struct task_struct, thread.i387.fxsave) & 15); if (cpu_has_fxsr) { - /* - * Verify that the FXSAVE/FXRSTOR data will be 16-byte aligned. - * Generates a compile-time "error: zero width for bit-field" if - * the alignment is wrong. - */ - struct fxsrAlignAssert { - int _:!(offsetof(struct task_struct, - thread.i387.fxsave) & 15); - }; - printk(KERN_INFO "Enabling fast FPU save and restore... "); set_in_cr4(X86_CR4_OSFXSR); printk("done.\n");