diff options
-rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 1d443407423c..ad6e135bf212 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c | |||
@@ -322,6 +322,8 @@ EXPORT_SYMBOL(__ioremap); | |||
322 | EXPORT_SYMBOL(iounmap); | 322 | EXPORT_SYMBOL(iounmap); |
323 | EXPORT_SYMBOL(__iounmap); | 323 | EXPORT_SYMBOL(__iounmap); |
324 | 324 | ||
325 | static DEFINE_SPINLOCK(phb_io_lock); | ||
326 | |||
325 | void __iomem * reserve_phb_iospace(unsigned long size) | 327 | void __iomem * reserve_phb_iospace(unsigned long size) |
326 | { | 328 | { |
327 | void __iomem *virt_addr; | 329 | void __iomem *virt_addr; |
@@ -329,8 +331,10 @@ void __iomem * reserve_phb_iospace(unsigned long size) | |||
329 | if (phbs_io_bot >= IMALLOC_BASE) | 331 | if (phbs_io_bot >= IMALLOC_BASE) |
330 | panic("reserve_phb_iospace(): phb io space overflow\n"); | 332 | panic("reserve_phb_iospace(): phb io space overflow\n"); |
331 | 333 | ||
334 | spin_lock(&phb_io_lock); | ||
332 | virt_addr = (void __iomem *) phbs_io_bot; | 335 | virt_addr = (void __iomem *) phbs_io_bot; |
333 | phbs_io_bot += size; | 336 | phbs_io_bot += size; |
337 | spin_unlock(&phb_io_lock); | ||
334 | 338 | ||
335 | return virt_addr; | 339 | return virt_addr; |
336 | } | 340 | } |