From b239cbe957ae730caa8af2f169a4d35b8c1bb299 Mon Sep 17 00:00:00 2001 From: Stephen Rothwell Date: Tue, 28 Mar 2006 14:40:58 +1100 Subject: [PATCH] [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 Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/pci_64.c | 1 + include/asm-powerpc/floppy.h | 5 +++-- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index ba92bab7cc2..4c4449be81c 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 e258778ca42..608164c39ef 100644 --- a/include/asm-powerpc/floppy.h +++ b/include/asm-powerpc/floppy.h @@ -35,6 +35,7 @@ #ifdef CONFIG_PCI #include +#include /* 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; -- 2.41.0