From: Benjamin LaHaise <bcrl@redhat.com>
To: Marcelo Tosatti <marcelo@conectiva.com.br>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: highmem pci dma mapping does not work, missing cast in asm-i386/pci.h
Date: Mon, 10 Jun 2002 19:56:44 -0400 [thread overview]
Message-ID: <20020610195644.C13225@redhat.com> (raw)
Hello all,
There's a missing cast in pci_map_page that causes 64 bit capable
drivers to access the wrong memory for highmem pages. Please
include the patch below to fix it.
-ben
--
"You will be reincarnated as a toad; and you will be much happier."
:r ~/patches/v2.4/v2.4.19-pre10-pci_highmem.diff
diff -urN v2.4.19-pre10/include/asm-i386/pci.h pci-v2.4.19-pre10/include/asm-i386/pci.h
--- v2.4.19-pre10/include/asm-i386/pci.h Thu Jun 6 20:10:08 2002
+++ pci-v2.4.19-pre10/include/asm-i386/pci.h Mon Jun 10 19:54:16 2002
@@ -103,7 +103,7 @@
if (direction == PCI_DMA_NONE)
out_of_line_bug();
- return (page - mem_map) * PAGE_SIZE + offset;
+ return (dma_addr_t)(page - mem_map) * PAGE_SIZE + offset;
}
static inline void pci_unmap_page(struct pci_dev *hwdev, dma_addr_t dma_address,
next reply other threads:[~2002-06-10 23:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-06-10 23:56 Benjamin LaHaise [this message]
2002-06-23 15:39 ` highmem pci dma mapping does not work, missing cast in asm-i386/pci.h Jes Sorensen
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