From: Benjamin LaHaise <bcrl@redhat.com>
To: Linus Torvalds <torvalds@transmeta.com>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: [patch] pci dma patch rediffed for 2.5.21
Date: Mon, 10 Jun 2002 21:58:23 -0400 [thread overview]
Message-ID: <20020610215823.E13225@redhat.com> (raw)
Hello all,
This is the same patch as was posted against 2.4.19-pre10: pci_map_page
was missing a cast on x86, which resulted in the high 32 bits of an
address being silently discarded. This patch fixes that by casting
the page number before multiplying it out.
-ben
--
"You will be reincarnated as a toad; and you will be much happier."
:r ~/patches/v2.5/v2.5.21-pci.diff
diff -urN v2.5.21/include/asm-i386/pci.h pci/include/asm-i386/pci.h
--- v2.5.21/include/asm-i386/pci.h Mon Jun 10 21:41:10 2002
+++ pci/include/asm-i386/pci.h Mon Jun 10 21:54:11 2002
@@ -109,7 +109,7 @@
if (direction == PCI_DMA_NONE)
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,
reply other threads:[~2002-06-11 1:58 UTC|newest]
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