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MIPS: Idle: Do address fiddlery in helper functions.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2013-05-21 17:30:36 +02:00
parent bdc92d74e0
commit f94d9a8ef9
3 changed files with 15 additions and 6 deletions
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11
arch/mips/include/asm/idle.h
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@ -8,4 +8,15 @@ extern asmlinkage void r4k_wait(void);
extern void r4k_wait_irqoff(void);
extern void __pastwait(void);
static inline int using_rollback_handler(void)
{
return cpu_wait == r4k_wait;
}
static inline int address_is_in_r4k_wait_irqoff(unsigned long addr)
{
return addr >= (unsigned long)r4k_wait_irqoff &&
addr < (unsigned long)__pastwait;
}
#endif /* __ASM_IDLE_H */

3
arch/mips/kernel/smtc.c
View File

@ -914,8 +914,7 @@ void smtc_send_ipi(int cpu, int type, unsigned int action)
*/
if (cpu_wait == r4k_wait_irqoff) {
tcrestart = read_tc_c0_tcrestart();
if (tcrestart >= (unsigned long)r4k_wait_irqoff
&& tcrestart < (unsigned long)__pastwait) {
if (address_is_in_r4k_wait_irqoff(tcrestart)) {
write_tc_c0_tcrestart(__pastwait);
tcstatus &= ~TCSTATUS_IXMT;
write_tc_c0_tcstatus(tcstatus);

7
arch/mips/kernel/traps.c
View File

@ -1542,7 +1542,7 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs)
extern char except_vec_vi, except_vec_vi_lui;
extern char except_vec_vi_ori, except_vec_vi_end;
extern char rollback_except_vec_vi;
char *vec_start = (cpu_wait == r4k_wait) ?
char *vec_start = using_rollback_handler() ?
&rollback_except_vec_vi : &except_vec_vi;
#ifdef CONFIG_MIPS_MT_SMTC
/*
@ -1812,10 +1812,8 @@ void __init trap_init(void)
extern char except_vec4;
extern char except_vec3_r4000;
unsigned long i;
int rollback;
check_wait();
rollback = (cpu_wait == r4k_wait);
#if defined(CONFIG_KGDB)
if (kgdb_early_setup)
@ -1892,7 +1890,8 @@ void __init trap_init(void)
if (board_be_init)
board_be_init();
set_except_vector(0, rollback ? rollback_handle_int : handle_int);
set_except_vector(0, using_rollback_handler() ? rollback_handle_int
: handle_int);
set_except_vector(1, handle_tlbm);
set_except_vector(2, handle_tlbl);
set_except_vector(3, handle_tlbs);