From 5316a64ce518f850afb0fca322b85b6dff3cb59f Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Thu, 4 Jun 2015 13:55:50 -0400 Subject: [PATCH] tile: avoid a "label not used" warning in do_page_fault() There are two different ifdef cases where the label is used, but if neither is true, the label is unused and the compiler generates a warning. Refactor the code the way x86 does so that there is a do_page_fault() that just does exception handling for context tracking, and make __do_page_fault() a static inline so that various cases can just return instead of doing a jump to "done". Signed-off-by: Chris Metcalf --- arch/tile/mm/fault.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c index e83cc999da02..4787ee8f0705 100644 --- a/arch/tile/mm/fault.c +++ b/arch/tile/mm/fault.c @@ -699,11 +699,10 @@ struct intvec_state do_page_fault_ics(struct pt_regs *regs, int fault_num, * interrupt away appropriately and return immediately. We can't do * page faults for user code while in kernel mode. */ -void do_page_fault(struct pt_regs *regs, int fault_num, - unsigned long address, unsigned long write) +static inline void __do_page_fault(struct pt_regs *regs, int fault_num, + unsigned long address, unsigned long write) { int is_page_fault; - enum ctx_state prev_state = exception_enter(); #ifdef CONFIG_KPROBES /* @@ -713,7 +712,7 @@ void do_page_fault(struct pt_regs *regs, int fault_num, */ if (notify_die(DIE_PAGE_FAULT, "page fault", regs, -1, regs->faultnum, SIGSEGV) == NOTIFY_STOP) - goto done; + return; #endif #ifdef __tilegx__ @@ -835,18 +834,22 @@ void do_page_fault(struct pt_regs *regs, int fault_num, async->is_fault = is_page_fault; async->is_write = write; async->address = address; - goto done; + return; } } #endif handle_page_fault(regs, fault_num, is_page_fault, address, write); +} -done: +void do_page_fault(struct pt_regs *regs, int fault_num, + unsigned long address, unsigned long write) +{ + enum ctx_state prev_state = exception_enter(); + __do_page_fault(regs, fault_num, address, write); exception_exit(prev_state); } - #if CHIP_HAS_TILE_DMA() /* * This routine effectively re-issues asynchronous page faults -- 2.20.1