bcma: use separated function to initialize bus on SoC

This is required to split SoC bus init into two phases. The later one
(which includes scanning) should be called when kalloc is available.

Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 14 insertions, 2 deletions

diff --git a/arch/mips/bcm47xx/setup.c b/arch/mips/bcm47xx/setup.c
index 2b63e7e7d3d3..fff6ed4978c7 100644
--- a/arch/mips/bcm47xx/setup.c
+++ b/arch/mips/bcm47xx/setup.c
@@ -202,6 +202,10 @@ static void __init bcm47xx_register_bcma(void)
 
         err = bcma_host_soc_register(&bcm47xx_bus.bcma);
         if (err)
+                panic("Failed to register BCMA bus (err %d)", err);
+
+        err = bcma_host_soc_init(&bcm47xx_bus.bcma);
+        if (err)
                 panic("Failed to initialize BCMA bus (err %d)", err);
 
         bcm47xx_fill_bcma_boardinfo(&bcm47xx_bus.bcma.bus.boardinfo, NULL);
diff --git a/drivers/bcma/host_soc.c b/drivers/bcma/host_soc.c
index 379e0d4ebe72..718e054dd727 100644
--- a/drivers/bcma/host_soc.c
+++ b/drivers/bcma/host_soc.c
@@ -165,7 +165,6 @@ static const struct bcma_host_ops bcma_host_soc_ops = {
 int __init bcma_host_soc_register(struct bcma_soc *soc)
 {
         struct bcma_bus *bus = &soc->bus;
-        int err;
 
         /* iomap only first core. We have to read some register on this core
          * to scan the bus.
@@ -181,7 +180,15 @@ int __init bcma_host_soc_register(struct bcma_soc *soc)
         /* Initialize struct, detect chip */
         bcma_init_bus(bus);
 
-        /* Register */
+        return 0;
+}
+
+int __init bcma_host_soc_init(struct bcma_soc *soc)
+{
+        struct bcma_bus *bus = &soc->bus;
+        int err;
+
+        /* Scan bus and initialize it */
         err = bcma_bus_early_register(bus, &soc->core_cc, &soc->core_mips);
         if (err)
                 iounmap(bus->mmio);
diff --git a/include/linux/bcma/bcma_soc.h b/include/linux/bcma/bcma_soc.h
index 4203c5593b9f..f24d245f8394 100644
--- a/include/linux/bcma/bcma_soc.h
+++ b/include/linux/bcma/bcma_soc.h
@@ -10,6 +10,7 @@ struct bcma_soc {
 };
 
 int __init bcma_host_soc_register(struct bcma_soc *soc);
+int __init bcma_host_soc_init(struct bcma_soc *soc);
 
 int bcma_bus_register(struct bcma_bus *bus);