powerpc: fix fsl_upm nand driver modular build

The fsl_upm nand driver fails to build because fsl_lbc_lock isn't
exported, the lock is needed by the inlined fsl_upm_run_pattern()
function:

ERROR: "fsl_lbc_lock" [drivers/mtd/nand/fsl_upm.ko] undefined!

Dave Jones purposed to export the lock, but it is better to just uninline
the fsl_upm_run_pattern().

When uninlined we also no longer need the exported fsl_lbc_regs, and
both fsl_lbc_lock and fsl_lbc_regs could be marked static.

While at it, also add some missing includes that we should have included
explicitly.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2 files changed, 53 insertions, 48 deletions

diff --git a/arch/powerpc/include/asm/fsl_lbc.h b/arch/powerpc/include/asm/fsl_lbc.h
index 303f5484c050..63a4f779f531 100644
--- a/arch/powerpc/include/asm/fsl_lbc.h
+++ b/arch/powerpc/include/asm/fsl_lbc.h
@@ -23,9 +23,9 @@
 #ifndef __ASM_FSL_LBC_H
 #define __ASM_FSL_LBC_H
 
+#include <linux/compiler.h>
 #include <linux/types.h>
-#include <linux/spinlock.h>
-#include <asm/io.h>
+#include <linux/io.h>
 
 struct fsl_lbc_bank {
         __be32 br;             /**< Base Register  */
@@ -227,9 +227,6 @@ struct fsl_lbc_regs {
         u8 res8[0xF00];
 };
 
-extern struct fsl_lbc_regs __iomem *fsl_lbc_regs;
-extern spinlock_t fsl_lbc_lock;
-
 /*
  * FSL UPM routines
  */
@@ -268,44 +265,7 @@ static inline void fsl_upm_end_pattern(struct fsl_upm *upm)
                 cpu_relax();
 }
 
-/**
- * fsl_upm_run_pattern - actually run an UPM pattern
- * @upm:        pointer to the fsl_upm structure obtained via fsl_upm_find
- * @io_base:    remapped pointer to where memory access should happen
- * @mar:        MAR register content during pattern execution
- *
- * This function triggers dummy write to the memory specified by the io_base,
- * thus UPM pattern actually executed. Note that mar usage depends on the
- * pre-programmed AMX bits in the UPM RAM.
- */
-static inline int fsl_upm_run_pattern(struct fsl_upm *upm,
-                                      void __iomem *io_base, u32 mar)
-{
-        int ret = 0;
-        unsigned long flags;
-
-        spin_lock_irqsave(&fsl_lbc_lock, flags);
-
-        out_be32(&fsl_lbc_regs->mar, mar << (32 - upm->width));
-
-        switch (upm->width) {
-        case 8:
-                out_8(io_base, 0x0);
-                break;
-        case 16:
-                out_be16(io_base, 0x0);
-                break;
-        case 32:
-                out_be32(io_base, 0x0);
-                break;
-        default:
-                ret = -EINVAL;
-                break;
-        }
-
-        spin_unlock_irqrestore(&fsl_lbc_lock, flags);
-
-        return ret;
-}
+extern int fsl_upm_run_pattern(struct fsl_upm *upm, void __iomem *io_base,
+                               u32 mar);
 
 #endif /* __ASM_FSL_LBC_H */
diff --git a/arch/powerpc/sysdev/fsl_lbc.c b/arch/powerpc/sysdev/fsl_lbc.c
index 422c8faef593..0494ee55920f 100644
--- a/arch/powerpc/sysdev/fsl_lbc.c
+++ b/arch/powerpc/sysdev/fsl_lbc.c
@@ -11,14 +11,19 @@
  * (at your option) any later version.
  */
 
+#include <linux/init.h>
+#include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/compiler.h>
+#include <linux/spinlock.h>
+#include <linux/types.h>
+#include <linux/io.h>
 #include <linux/of.h>
+#include <asm/prom.h>
 #include <asm/fsl_lbc.h>
 
-spinlock_t fsl_lbc_lock = __SPIN_LOCK_UNLOCKED(fsl_lbc_lock);
-
-struct fsl_lbc_regs __iomem *fsl_lbc_regs;
-EXPORT_SYMBOL(fsl_lbc_regs);
+static spinlock_t fsl_lbc_lock = __SPIN_LOCK_UNLOCKED(fsl_lbc_lock);
+static struct fsl_lbc_regs __iomem *fsl_lbc_regs;
 
 static char __initdata *compat_lbc[] = {
         "fsl,pq2-localbus",
@@ -127,3 +132,43 @@ int fsl_upm_find(phys_addr_t addr_base, struct fsl_upm *upm)
         return 0;
 }
 EXPORT_SYMBOL(fsl_upm_find);
+
+/**
+ * fsl_upm_run_pattern - actually run an UPM pattern
+ * @upm:        pointer to the fsl_upm structure obtained via fsl_upm_find
+ * @io_base:    remapped pointer to where memory access should happen
+ * @mar:        MAR register content during pattern execution
+ *
+ * This function triggers dummy write to the memory specified by the io_base,
+ * thus UPM pattern actually executed. Note that mar usage depends on the
+ * pre-programmed AMX bits in the UPM RAM.
+ */
+int fsl_upm_run_pattern(struct fsl_upm *upm, void __iomem *io_base, u32 mar)
+{
+        int ret = 0;
+        unsigned long flags;
+
+        spin_lock_irqsave(&fsl_lbc_lock, flags);
+
+        out_be32(&fsl_lbc_regs->mar, mar << (32 - upm->width));
+
+        switch (upm->width) {
+        case 8:
+                out_8(io_base, 0x0);
+                break;
+        case 16:
+                out_be16(io_base, 0x0);
+                break;
+        case 32:
+                out_be32(io_base, 0x0);
+                break;
+        default:
+                ret = -EINVAL;
+                break;
+        }
+
+        spin_unlock_irqrestore(&fsl_lbc_lock, flags);
+
+        return ret;
+}
+EXPORT_SYMBOL(fsl_upm_run_pattern);