diff options
Diffstat (limited to 'arch/blackfin/mach-common')
| -rw-r--r-- | arch/blackfin/mach-common/entry.S | 12 | ||||
| -rw-r--r-- | arch/blackfin/mach-common/smp.c | 10 |
2 files changed, 16 insertions, 6 deletions
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S index 5a4e7c7fd92..fb1795d5be2 100644 --- a/arch/blackfin/mach-common/entry.S +++ b/arch/blackfin/mach-common/entry.S @@ -218,7 +218,7 @@ ENTRY(_ex_single_step) /* Single stepping only a single instruction, so clear the trace * bit here. */ r7 = syscfg; - bitclr (r7, 0); + bitclr (r7, SYSCFG_SSSTEP_P); syscfg = R7; jump _ex_trap_c; @@ -251,7 +251,7 @@ ENTRY(_ex_single_step) if !cc jump _bfin_return_from_exception; r7 = syscfg; - bitclr (r7, 0); + bitclr (r7, SYSCFG_SSSTEP_P); /* Turn off single step */ syscfg = R7; /* Fall through to _bfin_return_from_exception. */ @@ -342,9 +342,11 @@ ENTRY(_ex_trap_c) r6 = retx; [p5 + PDA_RETX] = r6; #endif + /* Save the state of single stepping */ r6 = SYSCFG; [p5 + PDA_SYSCFG] = r6; - BITCLR(r6, 0); + /* Clear it while we handle the exception in IRQ5 mode */ + BITCLR(r6, SYSCFG_SSSTEP_P); SYSCFG = r6; /* Disable all interrupts, but make sure level 5 is enabled so @@ -367,7 +369,7 @@ ENDPROC(_ex_trap_c) * exception. This is a unrecoverable event, so crash. * Note: this cannot be ENTRY() as we jump here with "if cc jump" ... */ -_double_fault: +ENTRY(_double_fault) /* Turn caches & protection off, to ensure we don't get any more * double exceptions */ @@ -872,7 +874,7 @@ ENTRY(_ret_from_exception) raise 15; /* raise evt15 to do signal or reschedule */ 4: r0 = syscfg; - bitclr(r0, 0); + bitclr(r0, SYSCFG_SSSTEP_P); /* Turn off single step */ syscfg = r0; 5: rts; diff --git a/arch/blackfin/mach-common/smp.c b/arch/blackfin/mach-common/smp.c index 61840059dfa..349ee3f5466 100644 --- a/arch/blackfin/mach-common/smp.c +++ b/arch/blackfin/mach-common/smp.c @@ -211,6 +211,8 @@ int smp_call_function(void (*func)(void *info), void *info, int wait) return 0; msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + if (!msg) + return -ENOMEM; INIT_LIST_HEAD(&msg->list); msg->call_struct.func = func; msg->call_struct.info = info; @@ -252,6 +254,8 @@ int smp_call_function_single(int cpuid, void (*func) (void *info), void *info, cpu_set(cpu, callmap); msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + if (!msg) + return -ENOMEM; INIT_LIST_HEAD(&msg->list); msg->call_struct.func = func; msg->call_struct.info = info; @@ -287,6 +291,8 @@ void smp_send_reschedule(int cpu) return; msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + if (!msg) + return; memset(msg, 0, sizeof(msg)); INIT_LIST_HEAD(&msg->list); msg->type = BFIN_IPI_RESCHEDULE; @@ -314,6 +320,8 @@ void smp_send_stop(void) return; msg = kmalloc(sizeof(*msg), GFP_ATOMIC); + if (!msg) + return; memset(msg, 0, sizeof(msg)); INIT_LIST_HEAD(&msg->list); msg->type = BFIN_IPI_CPU_STOP; @@ -450,7 +458,7 @@ void __init smp_cpus_done(unsigned int max_cpus) unsigned int cpu; for_each_online_cpu(cpu) - bogosum += per_cpu(cpu_data, cpu).loops_per_jiffy; + bogosum += loops_per_jiffy; printk(KERN_INFO "SMP: Total of %d processors activated " "(%lu.%02lu BogoMIPS).\n", |