diff options
Diffstat (limited to 'drivers/firmware/dcdbas.c')
| -rw-r--r-- | drivers/firmware/dcdbas.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c index 50a071f1c94..3009e0171e5 100644 --- a/drivers/firmware/dcdbas.c +++ b/drivers/firmware/dcdbas.c @@ -238,13 +238,13 @@ static ssize_t host_control_on_shutdown_store(struct device *dev, } /** - * smi_request: generate SMI request + * dcdbas_smi_request: generate SMI request * * Called with smi_data_lock. */ -static int smi_request(struct smi_cmd *smi_cmd) +int dcdbas_smi_request(struct smi_cmd *smi_cmd) { - cpumask_t old_mask; + cpumask_var_t old_mask; int ret = 0; if (smi_cmd->magic != SMI_CMD_MAGIC) { @@ -254,8 +254,11 @@ static int smi_request(struct smi_cmd *smi_cmd) } /* SMI requires CPU 0 */ - old_mask = current->cpus_allowed; - set_cpus_allowed_ptr(current, &cpumask_of_cpu(0)); + if (!alloc_cpumask_var(&old_mask, GFP_KERNEL)) + return -ENOMEM; + + cpumask_copy(old_mask, ¤t->cpus_allowed); + set_cpus_allowed_ptr(current, cpumask_of(0)); if (smp_processor_id() != 0) { dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n", __func__); @@ -275,7 +278,8 @@ static int smi_request(struct smi_cmd *smi_cmd) ); out: - set_cpus_allowed_ptr(current, &old_mask); + set_cpus_allowed_ptr(current, old_mask); + free_cpumask_var(old_mask); return ret; } @@ -309,14 +313,14 @@ static ssize_t smi_request_store(struct device *dev, switch (val) { case 2: /* Raw SMI */ - ret = smi_request(smi_cmd); + ret = dcdbas_smi_request(smi_cmd); if (!ret) ret = count; break; case 1: /* Calling Interface SMI */ smi_cmd->ebx = (u32) virt_to_phys(smi_cmd->command_buffer); - ret = smi_request(smi_cmd); + ret = dcdbas_smi_request(smi_cmd); if (!ret) ret = count; break; @@ -333,6 +337,7 @@ out: mutex_unlock(&smi_data_lock); return ret; } +EXPORT_SYMBOL(dcdbas_smi_request); /** * host_control_smi: generate host control SMI |