diff options
Diffstat (limited to 'drivers/base/driver.c')
-rw-r--r-- | drivers/base/driver.c | 55 |
1 files changed, 53 insertions, 2 deletions
diff --git a/drivers/base/driver.c b/drivers/base/driver.c index 64fe2894e3..dc2df91522 100644 --- a/drivers/base/driver.c +++ b/drivers/base/driver.c @@ -77,6 +77,8 @@ int get_free_deviceid(const char *name_template) static int match(struct driver_d *drv, struct device_d *dev) { + int ret; + if (dev->driver) return -1; @@ -84,8 +86,11 @@ static int match(struct driver_d *drv, struct device_d *dev) if (dev->bus->match(dev, drv)) goto err_out; - if (dev->bus->probe(dev)) + ret = dev->bus->probe(dev); + if (ret) { + dev_err(dev, "probe failed: %s\n", strerror(-ret)); goto err_out; + } list_add(&dev->active, &active); @@ -247,6 +252,52 @@ void *dev_get_mem_region(struct device_d *dev, int num) } EXPORT_SYMBOL(dev_get_mem_region); +struct resource *dev_get_resource_by_name(struct device_d *dev, + const char *name) +{ + int i; + + for (i = 0; i < dev->num_resources; i++) { + struct resource *res = &dev->resource[i]; + if (resource_type(res) != IORESOURCE_MEM) + continue; + if (!res->name) + continue; + if (!strcmp(name, res->name)) + return res; + } + + return NULL; +} + +void *dev_get_mem_region_by_name(struct device_d *dev, const char *name) +{ + struct resource *res; + + res = dev_get_resource_by_name(dev, name); + if (!res) + return NULL; + + return (void __force *)res->start; +} +EXPORT_SYMBOL(dev_get_mem_region_by_name); + +void __iomem *dev_request_mem_region_by_name(struct device_d *dev, const char *name) +{ + struct resource *res; + + res = dev_get_resource_by_name(dev, name); + if (!res) + return NULL; + + res = request_iomem_region(dev_name(dev), res->start, res->end); + if (!res) + return NULL; + + return (void __force __iomem *)res->start; +} +EXPORT_SYMBOL(dev_request_mem_region_by_name); + void __iomem *dev_request_mem_region(struct device_d *dev, int num) { struct resource *res; @@ -403,7 +454,7 @@ static int do_devinfo(int argc, char *argv[]) printf("\ndrivers:\n"); for_each_driver(drv) - printf("%10s\n",drv->name); + printf("%s\n",drv->name); } else { dev = get_device_by_name(argv[1]); |