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authorStephen Rothwell <sfr@canb.auug.org.au>2006-03-28 14:40:58 +1100
committerPaul Mackerras <paulus@samba.org>2006-03-28 16:45:36 +1100
commitb239cbe957ae730caa8af2f169a4d35b8c1bb299 (patch)
tree7567ee8777c8b4331770240952b738cf4f52d1b9
parent69ed3324983bb937d78a8579ed91b90242ee5aaa (diff)
downloadop-kernel-dev-b239cbe957ae730caa8af2f169a4d35b8c1bb299.zip
op-kernel-dev-b239cbe957ae730caa8af2f169a4d35b8c1bb299.tar.gz
[PATCH] powerpc: make ISA floppies work again
We used to assume that a DMA mapping request with a NULL dev was for ISA DMA. This assumption was broken at some point. Now we explicitly pass the detected ISA PCI device in the floppy setup. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--arch/powerpc/kernel/pci_64.c1
-rw-r--r--include/asm-powerpc/floppy.h5
2 files changed, 4 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index ba92bab7..4c4449b 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -78,6 +78,7 @@ int global_phb_number; /* Global phb counter */
/* Cached ISA bridge dev. */
struct pci_dev *ppc64_isabridge_dev = NULL;
+EXPORT_SYMBOL_GPL(ppc64_isabridge_dev);
static void fixup_broken_pcnet32(struct pci_dev* dev)
{
diff --git a/include/asm-powerpc/floppy.h b/include/asm-powerpc/floppy.h
index e258778..608164c 100644
--- a/include/asm-powerpc/floppy.h
+++ b/include/asm-powerpc/floppy.h
@@ -35,6 +35,7 @@
#ifdef CONFIG_PCI
#include <linux/pci.h>
+#include <asm/ppc-pci.h> /* for ppc64_isabridge_dev */
#define fd_dma_setup(addr,size,mode,io) powerpc_fd_dma_setup(addr,size,mode,io)
@@ -52,12 +53,12 @@ static __inline__ int powerpc_fd_dma_setup(char *addr, unsigned long size,
if (bus_addr
&& (addr != prev_addr || size != prev_size || dir != prev_dir)) {
/* different from last time -- unmap prev */
- pci_unmap_single(NULL, bus_addr, prev_size, prev_dir);
+ pci_unmap_single(ppc64_isabridge_dev, bus_addr, prev_size, prev_dir);
bus_addr = 0;
}
if (!bus_addr) /* need to map it */
- bus_addr = pci_map_single(NULL, addr, size, dir);
+ bus_addr = pci_map_single(ppc64_isabridge_dev, addr, size, dir);
/* remember this one as prev */
prev_addr = addr;
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