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authorLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 12:19:15 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2005-10-29 12:19:15 -0700
commite9d52234e35b27ea4ea5f2ab64ca47b1a0c740ab (patch)
tree318d37a7d55c79e6f7d86163fb28e0eccbb0fe83 /arch/mips/kernel/dma-no-isa.c
parent955c5038823748e529a49f0e33ab635d92843500 (diff)
parent09af7b443c257460d45cb6c1896d29f173fef35b (diff)
Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Diffstat (limited to 'arch/mips/kernel/dma-no-isa.c')
-rw-r--r--arch/mips/kernel/dma-no-isa.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/mips/kernel/dma-no-isa.c b/arch/mips/kernel/dma-no-isa.c
new file mode 100644
index 00000000000..6df8b07741e
--- /dev/null
+++ b/arch/mips/kernel/dma-no-isa.c
@@ -0,0 +1,28 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2004 by Ralf Baechle
+ *
+ * Dummy ISA DMA functions for systems that don't have ISA but share drivers
+ * with ISA such as legacy free PCI.
+ */
+#include <linux/errno.h>
+#include <linux/module.h>
+#include <linux/spinlock.h>
+
+DEFINE_SPINLOCK(dma_spin_lock);
+
+int request_dma(unsigned int dmanr, const char * device_id)
+{
+ return -EINVAL;
+}
+
+void free_dma(unsigned int dmanr)
+{
+}
+
+EXPORT_SYMBOL(dma_spin_lock);
+EXPORT_SYMBOL(request_dma);
+EXPORT_SYMBOL(free_dma);