diff options
Diffstat (limited to 'drivers/gpio/gpiolib-acpi.c')
| -rw-r--r-- | drivers/gpio/gpiolib-acpi.c | 36 |
1 files changed, 1 insertions, 35 deletions
diff --git a/drivers/gpio/gpiolib-acpi.c b/drivers/gpio/gpiolib-acpi.c index 28f35a9de86b..0392d8ed332f 100644 --- a/drivers/gpio/gpiolib-acpi.c +++ b/drivers/gpio/gpiolib-acpi.c @@ -1129,45 +1129,11 @@ int acpi_gpio_count(struct device *dev, const char *con_id) return count ? count : -ENOENT; } -struct acpi_crs_lookup { - struct list_head node; - struct acpi_device *adev; - const char *con_id; -}; - -static DEFINE_MUTEX(acpi_crs_lookup_lock); -static LIST_HEAD(acpi_crs_lookup_list); - bool acpi_can_fallback_to_crs(struct acpi_device *adev, const char *con_id) { - struct acpi_crs_lookup *l, *lookup = NULL; - /* Never allow fallback if the device has properties */ if (adev->data.properties || adev->driver_gpios) return false; - mutex_lock(&acpi_crs_lookup_lock); - - list_for_each_entry(l, &acpi_crs_lookup_list, node) { - if (l->adev == adev) { - lookup = l; - break; - } - } - - if (!lookup) { - lookup = kmalloc(sizeof(*lookup), GFP_KERNEL); - if (lookup) { - lookup->adev = adev; - lookup->con_id = kstrdup(con_id, GFP_KERNEL); - list_add_tail(&lookup->node, &acpi_crs_lookup_list); - } - } - - mutex_unlock(&acpi_crs_lookup_lock); - - return lookup && - ((!lookup->con_id && !con_id) || - (lookup->con_id && con_id && - strcmp(lookup->con_id, con_id) == 0)); + return con_id == NULL; } |