Patched in Tegra support.

1 files changed, 5 insertions, 1 deletions

diff --git a/arch/sparc/include/asm/floppy_64.h b/arch/sparc/include/asm/floppy_64.h
index e204f902e6c..bcef1f5a2a6 100644
--- a/arch/sparc/include/asm/floppy_64.h
+++ b/arch/sparc/include/asm/floppy_64.h
@@ -161,7 +161,10 @@ unsigned long pdma_areasize;
 static void sun_fd_disable_dma(void)
 {
         doing_pdma = 0;
-        pdma_base = NULL;
+        if (pdma_base) {
+                mmu_unlockarea(pdma_base, pdma_areasize);
+                pdma_base = NULL;
+        }
 }
 
 static void sun_fd_set_dma_mode(int mode)
@@ -191,6 +194,7 @@ static void sun_fd_set_dma_count(int length)
 
 static void sun_fd_enable_dma(void)
 {
+        pdma_vaddr = mmu_lockarea(pdma_vaddr, pdma_size);
         pdma_base = pdma_vaddr;
         pdma_areasize = pdma_size;
 }