tile PCI RC: cleanups for tilepro PCI RC

- remove unneeded <linux/bootmem.h> include in pci.c
- eliminate unused pci_controller.first_busno field
- prefer msleep to mdelay
- remove stale comment about pci_scan_bus_parented()

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

2 files changed, 3 insertions, 14 deletions

diff --git a/arch/tile/include/asm/pci.h b/arch/tile/include/asm/pci.h
index 54a924208d3c..cd10e654916e 100644
--- a/arch/tile/include/asm/pci.h
+++ b/arch/tile/include/asm/pci.h
@@ -29,7 +29,6 @@ struct pci_controller {
         int index;              /* PCI domain number */
         struct pci_bus *root_bus;
 
-        int first_busno;
         int last_busno;
 
         int hv_cfg_fd[2];       /* config{0,1} fds for this PCIe controller */
diff --git a/arch/tile/kernel/pci.c b/arch/tile/kernel/pci.c
index 67237d34c2e2..1dae3b2183a0 100644
--- a/arch/tile/kernel/pci.c
+++ b/arch/tile/kernel/pci.c
@@ -20,7 +20,6 @@
 #include <linux/capability.h>
 #include <linux/sched.h>
 #include <linux/errno.h>
-#include <linux/bootmem.h>
 #include <linux/irq.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
@@ -192,7 +191,6 @@ int __init tile_pci_init(void)
                         controller->hv_cfg_fd[0] = hv_cfg_fd0;
                         controller->hv_cfg_fd[1] = hv_cfg_fd1;
                         controller->hv_mem_fd = hv_mem_fd;
-                        controller->first_busno = 0;
                         controller->last_busno = 0xff;
                         controller->ops = &tile_cfg_ops;
 
@@ -283,7 +281,7 @@ int __init pcibios_init(void)
          * known to require at least 20ms here, but we use a more
          * conservative value.
          */
-        mdelay(250);
+        msleep(250);
 
         /* Scan all of the recorded PCI controllers.  */
         for (i = 0; i < TILE_NUM_PCIE; i++) {
@@ -304,18 +302,10 @@ int __init pcibios_init(void)
 
                         pr_info("PCI: initializing controller #%d\n", i);
 
-                        /*
-                         * This comes from the generic Linux PCI driver.
-                         *
-                         * It reads the PCI tree for this bus into the Linux
-                         * data structures.
-                         *
-                         * This is inlined in linux/pci.h and calls into
-                         * pci_scan_bus_parented() in probe.c.
-                         */
                         pci_add_resource(&resources, &ioport_resource);
                         pci_add_resource(&resources, &iomem_resource);
-                        bus = pci_scan_root_bus(NULL, 0, controller->ops, controller, &resources);
+                        bus = pci_scan_root_bus(NULL, 0, controller->ops,
+                                                controller, &resources);
                         controller->root_bus = bus;
                         controller->last_busno = bus->busn_res.end;
                 }