diff options
Diffstat (limited to 'arch/x86/kernel/microcode.c')
| -rw-r--r-- | arch/x86/kernel/microcode.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/arch/x86/kernel/microcode.c b/arch/x86/kernel/microcode.c index 09c315214a5..6ff447f9fda 100644 --- a/arch/x86/kernel/microcode.c +++ b/arch/x86/kernel/microcode.c @@ -244,8 +244,8 @@ static int microcode_sanity_check(void *mc) return 0; /* check extended signature checksum */ for (i = 0; i < ext_sigcount; i++) { - ext_sig = (struct extended_signature *)((void *)ext_header - + EXT_HEADER_SIZE + EXT_SIGNATURE_SIZE * i); + ext_sig = (void *)ext_header + EXT_HEADER_SIZE + + EXT_SIGNATURE_SIZE * i; sum = orig_sum - (mc_header->sig + mc_header->pf + mc_header->cksum) + (ext_sig->sig + ext_sig->pf + ext_sig->cksum); @@ -279,11 +279,9 @@ static int get_maching_microcode(void *mc, int cpu) if (total_size <= get_datasize(mc_header) + MC_HEADER_SIZE) return 0; - ext_header = (struct extended_sigtable *)(mc + - get_datasize(mc_header) + MC_HEADER_SIZE); + ext_header = mc + get_datasize(mc_header) + MC_HEADER_SIZE; ext_sigcount = ext_header->count; - ext_sig = (struct extended_signature *)((void *)ext_header - + EXT_HEADER_SIZE); + ext_sig = (void *)ext_header + EXT_HEADER_SIZE; for (i = 0; i < ext_sigcount; i++) { if (microcode_update_match(cpu, mc_header, ext_sig->sig, ext_sig->pf)) @@ -436,7 +434,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_ return -EINVAL; } - lock_cpu_hotplug(); + get_online_cpus(); mutex_lock(µcode_mutex); user_buffer = (void __user *) buf; @@ -447,7 +445,7 @@ static ssize_t microcode_write (struct file *file, const char __user *buf, size_ ret = (ssize_t)len; mutex_unlock(µcode_mutex); - unlock_cpu_hotplug(); + put_online_cpus(); return ret; } @@ -539,7 +537,7 @@ static int cpu_request_microcode(int cpu) pr_debug("ucode data file %s load failed\n", name); return error; } - buf = (void *)firmware->data; + buf = firmware->data; size = firmware->size; while ((offset = get_next_ucode_from_buffer(&mc, buf, size, offset)) > 0) { @@ -658,14 +656,14 @@ static ssize_t reload_store(struct sys_device *dev, const char *buf, size_t sz) old = current->cpus_allowed; - lock_cpu_hotplug(); + get_online_cpus(); set_cpus_allowed(current, cpumask_of_cpu(cpu)); mutex_lock(µcode_mutex); if (uci->valid) err = cpu_request_microcode(cpu); mutex_unlock(µcode_mutex); - unlock_cpu_hotplug(); + put_online_cpus(); set_cpus_allowed(current, old); } if (err) @@ -817,9 +815,9 @@ static int __init microcode_init (void) return PTR_ERR(microcode_pdev); } - lock_cpu_hotplug(); + get_online_cpus(); error = sysdev_driver_register(&cpu_sysdev_class, &mc_sysdev_driver); - unlock_cpu_hotplug(); + put_online_cpus(); if (error) { microcode_dev_exit(); platform_device_unregister(microcode_pdev); @@ -839,9 +837,9 @@ static void __exit microcode_exit (void) unregister_hotcpu_notifier(&mc_cpu_notifier); - lock_cpu_hotplug(); + get_online_cpus(); sysdev_driver_unregister(&cpu_sysdev_class, &mc_sysdev_driver); - unlock_cpu_hotplug(); + put_online_cpus(); platform_device_unregister(microcode_pdev); } |