PCI: fix 4x section mismatch warnings

The following warnings were issued during build of
drivers/pci with an allyesconfig build:
WARNING: o-x86_64/drivers/pci/built-in.o(.text+0xdaf): Section mismatch in reference from the function pci_add_new_bus() to the function .devinit.text:pci_alloc_child_bus()
WARNING: o-x86_64/drivers/pci/built-in.o(.text+0x15e2): Section mismatch in reference from the function pci_scan_single_device() to the function .devinit.text:pci_scan_device()
WARNING: o-x86_64/drivers/pci/built-in.o(.text+0x1b0c5): Section mismatch in reference from the function pci_bus_assign_resources() to the function .devinit.text:pci_setup_bridge()
WARNING: o-x86_64/drivers/pci/built-in.o(.text+0x1b32d): Section mismatch in reference from the function pci_bus_size_bridges() to the function .devinit.text:pci_bus_size_cardbus()

Investigating each case closer it looked like all
referred functions are only used in the init phase
or during hotplug.
So to avoid wasting too much memory in the non-hotplug
case the simpler fix was to allow the fuctions to
use code/data from the __devinit sections.
This was done in all four case by adding the __ref
annotation.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 3bb2bc2a1e702273efdf0992e42875659029feaf..7f5dab34d315fe504dd0b79312543a12336a6596 100644 (file)
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -433,7 +433,7 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
        return child;
 }
 
-struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
+struct pci_bus *__ref pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)
 {
        struct pci_bus *child;
 
@@ -948,7 +948,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus)
        up_write(&pci_bus_sem);
 }
 
-struct pci_dev *pci_scan_single_device(struct pci_bus *bus, int devfn)
+struct pci_dev *__ref pci_scan_single_device(struct pci_bus *bus, int devfn)
 {
        struct pci_dev *dev;
 

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 8a7232feb553ffefd7dfe8f6207bcc0722dc186f..262b0439abe9e41a476629d9ac35927f2491620f 100644 (file)
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -456,7 +456,7 @@ pci_bus_size_cardbus(struct pci_bus *bus)
        }
 }
 
-void pci_bus_size_bridges(struct pci_bus *bus)
+void __ref pci_bus_size_bridges(struct pci_bus *bus)
 {
        struct pci_dev *dev;
        unsigned long mask, prefmask;
@@ -511,7 +511,7 @@ void pci_bus_size_bridges(struct pci_bus *bus)
 }
 EXPORT_SYMBOL(pci_bus_size_bridges);
 
-void pci_bus_assign_resources(struct pci_bus *bus)
+void __ref pci_bus_assign_resources(struct pci_bus *bus)
 {
        struct pci_bus *b;
        struct pci_dev *dev;