diff options
Diffstat (limited to 'drivers/firmware')
-rw-r--r-- | drivers/firmware/dcdbas.c | 12 | ||||
-rw-r--r-- | drivers/firmware/dell_rbu.c | 4 | ||||
-rw-r--r-- | drivers/firmware/dmi_scan.c | 74 |
3 files changed, 65 insertions, 25 deletions
diff --git a/drivers/firmware/dcdbas.c b/drivers/firmware/dcdbas.c index 777fba48d2d..3009e0171e5 100644 --- a/drivers/firmware/dcdbas.c +++ b/drivers/firmware/dcdbas.c @@ -244,7 +244,7 @@ static ssize_t host_control_on_shutdown_store(struct device *dev, */ 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 @@ int dcdbas_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 @@ int dcdbas_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; } diff --git a/drivers/firmware/dell_rbu.c b/drivers/firmware/dell_rbu.c index 13946ebd77d..b4704e150b2 100644 --- a/drivers/firmware/dell_rbu.c +++ b/drivers/firmware/dell_rbu.c @@ -576,7 +576,7 @@ static ssize_t read_rbu_image_type(struct kobject *kobj, { int size = 0; if (!pos) - size = sprintf(buffer, "%s\n", image_type); + size = scnprintf(buffer, count, "%s\n", image_type); return size; } @@ -648,7 +648,7 @@ static ssize_t read_rbu_packet_size(struct kobject *kobj, int size = 0; if (!pos) { spin_lock(&rbu_data.lock); - size = sprintf(buffer, "%lu\n", rbu_data.packetsize); + size = scnprintf(buffer, count, "%lu\n", rbu_data.packetsize); spin_unlock(&rbu_data.lock); } return size; diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c index d76adfea5df..8f0f7c44930 100644 --- a/drivers/firmware/dmi_scan.c +++ b/drivers/firmware/dmi_scan.c @@ -415,6 +415,29 @@ void __init dmi_scan_machine(void) } /** + * dmi_matches - check if dmi_system_id structure matches system DMI data + * @dmi: pointer to the dmi_system_id structure to check + */ +static bool dmi_matches(const struct dmi_system_id *dmi) +{ + int i; + + WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); + + for (i = 0; i < ARRAY_SIZE(dmi->matches); i++) { + int s = dmi->matches[i].slot; + if (s == DMI_NONE) + continue; + if (dmi_ident[s] + && strstr(dmi_ident[s], dmi->matches[i].substr)) + continue; + /* No match */ + return false; + } + return true; +} + +/** * dmi_check_system - check system DMI data * @list: array of dmi_system_id structures to match against * All non-null elements of the list must match @@ -429,32 +452,45 @@ void __init dmi_scan_machine(void) */ int dmi_check_system(const struct dmi_system_id *list) { - int i, count = 0; - const struct dmi_system_id *d = list; - - WARN(!dmi_initialized, KERN_ERR "dmi check: not initialized yet.\n"); - - while (d->ident) { - for (i = 0; i < ARRAY_SIZE(d->matches); i++) { - int s = d->matches[i].slot; - if (s == DMI_NONE) - continue; - if (dmi_ident[s] && strstr(dmi_ident[s], d->matches[i].substr)) - continue; - /* No match */ - goto fail; + int count = 0; + const struct dmi_system_id *d; + + for (d = list; d->ident; d++) + if (dmi_matches(d)) { + count++; + if (d->callback && d->callback(d)) + break; } - count++; - if (d->callback && d->callback(d)) - break; -fail: d++; - } return count; } EXPORT_SYMBOL(dmi_check_system); /** + * dmi_first_match - find dmi_system_id structure matching system DMI data + * @list: array of dmi_system_id structures to match against + * All non-null elements of the list must match + * their slot's (field index's) data (i.e., each + * list string must be a substring of the specified + * DMI slot's string data) to be considered a + * successful match. + * + * Walk the blacklist table until the first match is found. Return the + * pointer to the matching entry or NULL if there's no match. + */ +const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list) +{ + const struct dmi_system_id *d; + + for (d = list; d->ident; d++) + if (dmi_matches(d)) + return d; + + return NULL; +} +EXPORT_SYMBOL(dmi_first_match); + +/** * dmi_get_system_info - return DMI data value * @field: data index (see enum dmi_field) * |