Commit b239cbe9 authored by Stephen Rothwell's avatar Stephen Rothwell Committed by Paul Mackerras

[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: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 69ed3324
......@@ -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)
{
......
......@@ -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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