diff options
Diffstat (limited to 'drivers/base/driver.c')
| -rw-r--r-- | drivers/base/driver.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/base/driver.c b/drivers/base/driver.c index e7288f6a61..cbe1c974f4 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -27,6 +27,7 @@ #include <linux/err.h> #include <complete.h> #include <pinctrl.h> +#include <featctrl.h> #include <linux/clk/clk-conf.h> #ifdef CONFIG_DEBUG_PROBES @@ -45,6 +46,22 @@ LIST_HEAD(active_device_list); EXPORT_SYMBOL(active_device_list); static LIST_HEAD(deferred); +struct device_d *find_device(const char *str) +{ + struct device_d *dev; + struct device_node *np; + + dev = get_device_by_name(str); + if (dev) + return dev; + + np = of_find_node_by_path_or_alias(NULL, str); + if (np) + return of_find_device_by_node(np); + + return NULL; +} + struct device_d *get_device_by_name(const char *name) { struct device_d *dev; @@ -85,6 +102,14 @@ int device_probe(struct device_d *dev) static int depth = 0; int ret; + ret = of_feature_controller_check(dev->device_node); + if (ret < 0) + return ret; + if (ret == FEATCTRL_GATED) { + dev_dbg(dev, "feature gated, skipping probe\n"); + return -ENODEV; + } + depth++; pr_report_probe("%*sprobe-> %s\n", depth * 4, "", dev_name(dev)); |