From: Ralf Baechle Date: Mon, 3 Sep 2007 14:22:26 +0000 (+0200) Subject: [MIPS] Provide empty irq_enable_hazard definition for legacy and R1 cores. X-Git-Tag: MMI-PSA29.97-13-9~40552^2~6 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4af2b1454da7a2feec071a6a50dd957df7d0b7a7;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git [MIPS] Provide empty irq_enable_hazard definition for legacy and R1 cores. Following a strict interpretation the empty definition of irq_enable_hazard has always been a bug - but an intentional one because it didn't bite. This has now changed, for uniprocessor kernels mm/slab.c:do_drain() [...] on_each_cpu(do_drain, cachep, 1, 1); check_irq_on(); [...] may be compiled into a mtc0 c0_status; mfc0 c0_status sequence resulting in a back-to-back hazard. Signed-off-by: Ralf Baechle --- diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h index 918a4894b587..6a5fa32f615b 100644 --- a/include/asm-mips/hazards.h +++ b/include/asm-mips/hazards.h @@ -172,6 +172,7 @@ ASMMACRO(tlb_probe_hazard, nop; nop; nop ) ASMMACRO(irq_enable_hazard, + _ssnop; _ssnop; _ssnop; ) ASMMACRO(irq_disable_hazard, nop; nop; nop