PCI: make pci_bus a struct device

This moves the pci_bus class device to be a real struct device and at
the same time, place it in the device tree in the correct location.

Note, the old "bridge" symlink is now gone, but this was a non-standard
link and no userspace program used it.  If you need to determine the
device that the bus is on, follow the standard device symlink, or walk
up the device tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c
index 863340a7b77f336ab361cb2c1a609f6f4e232088..ef5a6a245f5fa36363d513e5aa35fef248a499a4 100644 (file)
--- a/drivers/pci/bus.c
+++ b/drivers/pci/bus.c
@@ -108,6 +108,7 @@ int pci_bus_add_device(struct pci_dev *dev)
 void pci_bus_add_devices(struct pci_bus *bus)
 {
        struct pci_dev *dev;
+       struct pci_bus *child_bus;
        int retval;
 
        list_for_each_entry(dev, &bus->devices, bus_list) {
@@ -138,11 +139,19 @@ void pci_bus_add_devices(struct pci_bus *bus)
                               up_write(&pci_bus_sem);
                        }
                        pci_bus_add_devices(dev->subordinate);
-                       retval = sysfs_create_link(&dev->subordinate->class_dev.kobj,
-                                                  &dev->dev.kobj, "bridge");
+
+                       /* register the bus with sysfs as the parent is now
+                        * properly registered. */
+                       child_bus = dev->subordinate;
+                       child_bus->dev.parent = child_bus->bridge;
+                       retval = device_register(&child_bus->dev);
+                       if (!retval)
+                               retval = device_create_file(&child_bus->dev,
+                                                       &dev_attr_cpuaffinity);
                        if (retval)
-                               dev_err(&dev->dev, "Error creating sysfs "
-                                       "bridge symlink, continuing...\n");
+                               dev_err(&dev->dev, "Error registering pci_bus"
+                                       " device bridge symlink,"
+                                       " continuing...\n");
                }
        }
 }

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index d05c1b2523866186934f04ba3719e3ace04fb047..abf4203304e405269dc111afbe19b02d1e14ff4d 100644 (file)
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -359,7 +359,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
                   char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-                                                      struct class_device,
+                                                      struct device,
                                                      kobj));
 
         /* Only support 1, 2 or 4 byte accesses */
@@ -384,7 +384,7 @@ pci_write_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
                    char *buf, loff_t off, size_t count)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-                                                     struct class_device,
+                                                     struct device,
                                                      kobj));
         /* Only support 1, 2 or 4 byte accesses */
         if (count != 1 && count != 2 && count != 4)
@@ -408,7 +408,7 @@ pci_mmap_legacy_mem(struct kobject *kobj, struct bin_attribute *attr,
                     struct vm_area_struct *vma)
 {
         struct pci_bus *bus = to_pci_bus(container_of(kobj,
-                                                      struct class_device,
+                                                      struct device,
                                                      kobj));
 
         return pci_mmap_legacy_page_range(bus, vma);

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 79887efbd986770170b4eeb0b79dffe8a4ee4086..eabeb1f2ec998b0cf39de823b7c0bfd7a237b6ba 100644 (file)
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -64,7 +64,7 @@ static inline int pci_no_d1d2(struct pci_dev *dev)
 }
 extern int pcie_mch_quirk;
 extern struct device_attribute pci_dev_attrs[];
-extern struct class_device_attribute class_device_attr_cpuaffinity;
+extern struct device_attribute dev_attr_cpuaffinity;
 
 /**
  * pci_match_one_device - Tell if a PCI device structure has a matching

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 9b4673df27e7bb122c3e323d523c33893ee2d8f9..8b505bd925aa31895df3eafd4c47cb40b5d24bc3 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -54,7 +54,7 @@ static void pci_create_legacy_files(struct pci_bus *b)
                b->legacy_io->attr.mode = S_IRUSR | S_IWUSR;
                b->legacy_io->read = pci_read_legacy_io;
                b->legacy_io->write = pci_write_legacy_io;
-               class_device_create_bin_file(&b->class_dev, b->legacy_io);
+               device_create_bin_file(&b->dev, b->legacy_io);
 
                /* Allocated above after the legacy_io struct */
                b->legacy_mem = b->legacy_io + 1;
@@ -62,15 +62,15 @@ static void pci_create_legacy_files(struct pci_bus *b)
                b->legacy_mem->size = 1024*1024;
                b->legacy_mem->attr.mode = S_IRUSR | S_IWUSR;
                b->legacy_mem->mmap = pci_mmap_legacy_mem;
-               class_device_create_bin_file(&b->class_dev, b->legacy_mem);
+               device_create_bin_file(&b->dev, b->legacy_mem);
        }
 }
 
 void pci_remove_legacy_files(struct pci_bus *b)
 {
        if (b->legacy_io) {
-               class_device_remove_bin_file(&b->class_dev, b->legacy_io);
-               class_device_remove_bin_file(&b->class_dev, b->legacy_mem);
+               device_remove_bin_file(&b->dev, b->legacy_io);
+               device_remove_bin_file(&b->dev, b->legacy_mem);
                kfree(b->legacy_io); /* both are allocated here */
        }
 }
@@ -82,26 +82,27 @@ void pci_remove_legacy_files(struct pci_bus *bus) { return; }
 /*
  * PCI Bus Class Devices
  */
-static ssize_t pci_bus_show_cpuaffinity(struct class_device *class_dev,
+static ssize_t pci_bus_show_cpuaffinity(struct device *dev,
+                                       struct device_attribute *attr,
                                        char *buf)
 {
        int ret;
        cpumask_t cpumask;
 
-       cpumask = pcibus_to_cpumask(to_pci_bus(class_dev));
+       cpumask = pcibus_to_cpumask(to_pci_bus(dev));
        ret = cpumask_scnprintf(buf, PAGE_SIZE, cpumask);
        if (ret < PAGE_SIZE)
                buf[ret++] = '\n';
        return ret;
 }
-CLASS_DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpuaffinity, NULL);
+DEVICE_ATTR(cpuaffinity, S_IRUGO, pci_bus_show_cpuaffinity, NULL);
 
 /*
  * PCI Bus Class
  */
-static void release_pcibus_dev(struct class_device *class_dev)
+static void release_pcibus_dev(struct device *dev)
 {
-       struct pci_bus *pci_bus = to_pci_bus(class_dev);
+       struct pci_bus *pci_bus = to_pci_bus(dev);
 
        if (pci_bus->bridge)
                put_device(pci_bus->bridge);
@@ -110,7 +111,7 @@ static void release_pcibus_dev(struct class_device *class_dev)
 
 static struct class pcibus_class = {
        .name           = "pci_bus",
-       .release        = &release_pcibus_dev,
+       .dev_release    = &release_pcibus_dev,
 };
 
 static int __init pcibus_class_init(void)
@@ -393,7 +394,6 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 {
        struct pci_bus *child;
        int i;
-       int retval;
 
        /*
         * Allocate a new bus, and inherit stuff from the parent..
@@ -409,15 +409,12 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
        child->bus_flags = parent->bus_flags;
        child->bridge = get_device(&bridge->dev);
 
-       child->class_dev.class = &pcibus_class;
-       sprintf(child->class_dev.class_id, "%04x:%02x", pci_domain_nr(child), busnr);
-       retval = class_device_register(&child->class_dev);
-       if (retval)
-               goto error_register;
-       retval = class_device_create_file(&child->class_dev,
-                                         &class_device_attr_cpuaffinity);
-       if (retval)
-               goto error_file_create;
+       /* initialize some portions of the bus device, but don't register it
+        * now as the parent is not properly set up yet.  This device will get
+        * registered later in pci_bus_add_devices()
+        */
+       child->dev.class = &pcibus_class;
+       sprintf(child->dev.bus_id, "%04x:%02x", pci_domain_nr(child), busnr);
 
        /*
         * Set up the primary, secondary and subordinate
@@ -435,12 +432,6 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
        bridge->subordinate = child;
 
        return child;
-
-error_file_create:
-       class_device_unregister(&child->class_dev);
-error_register:
-       kfree(child);
-       return NULL;
 }
 
 struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
@@ -1107,32 +1098,27 @@ struct pci_bus * pci_create_bus(struct device *parent,
                goto dev_reg_err;
        b->bridge = get_device(dev);
 
-       b->class_dev.class = &pcibus_class;
-       sprintf(b->class_dev.class_id, "%04x:%02x", pci_domain_nr(b), bus);
-       error = class_device_register(&b->class_dev);
+       b->dev.class = &pcibus_class;
+       b->dev.parent = b->bridge;
+       sprintf(b->dev.bus_id, "%04x:%02x", pci_domain_nr(b), bus);
+       error = device_register(&b->dev);
        if (error)
                goto class_dev_reg_err;
-       error = class_device_create_file(&b->class_dev, &class_device_attr_cpuaffinity);
+       error = device_create_file(&b->dev, &dev_attr_cpuaffinity);
        if (error)
-               goto class_dev_create_file_err;
+               goto dev_create_file_err;
 
        /* Create legacy_io and legacy_mem files for this bus */
        pci_create_legacy_files(b);
 
-       error = sysfs_create_link(&b->class_dev.kobj, &b->bridge->kobj, "bridge");
-       if (error)
-               goto sys_create_link_err;
-
        b->number = b->secondary = bus;
        b->resource[0] = &ioport_resource;
        b->resource[1] = &iomem_resource;
 
        return b;
 
-sys_create_link_err:
-       class_device_remove_file(&b->class_dev, &class_device_attr_cpuaffinity);
-class_dev_create_file_err:
-       class_device_unregister(&b->class_dev);
+dev_create_file_err:
+       device_unregister(&b->dev);
 class_dev_reg_err:
        device_unregister(dev);
 dev_reg_err:

diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 05c9ad2a7f8b8a3d717d1aca7e3d0ec2cbcfc0d3..ec4a82ba29a8d04b6739462e846395388cace68d 100644 (file)
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -78,10 +78,8 @@ void pci_remove_bus(struct pci_bus *pci_bus)
        list_del(&pci_bus->node);
        up_write(&pci_bus_sem);
        pci_remove_legacy_files(pci_bus);
-       class_device_remove_file(&pci_bus->class_dev,
-               &class_device_attr_cpuaffinity);
-       sysfs_remove_link(&pci_bus->class_dev.kobj, "bridge");
-       class_device_unregister(&pci_bus->class_dev);
+       device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
+       device_unregister(&pci_bus->dev);
 }
 EXPORT_SYMBOL(pci_remove_bus);
 

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 616f7ee8633fc82c34dee71b25e9839a026b3fb7..4f96f1d94ac4cf6c30d6660534c5b41a6f2fbee1 100644 (file)
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -278,13 +278,13 @@ struct pci_bus {
        unsigned short  bridge_ctl;     /* manage NO_ISA/FBB/et al behaviors */
        pci_bus_flags_t bus_flags;      /* Inherited by child busses */
        struct device           *bridge;
-       struct class_device     class_dev;
+       struct device           dev;
        struct bin_attribute    *legacy_io; /* legacy I/O for this bus */
        struct bin_attribute    *legacy_mem; /* legacy mem */
 };
 
 #define pci_bus_b(n)   list_entry(n, struct pci_bus, node)
-#define to_pci_bus(n)  container_of(n, struct pci_bus, class_dev)
+#define to_pci_bus(n)  container_of(n, struct pci_bus, dev)
 
 /*
  * Error values that may be returned by PCI functions.