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firewire: core: fix multichannel IR with buffers larger than 2 GB

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With a 32-bit i, computing i<<PAGE_SHIFT might result in
an overflow and in an eventual sign-extension.

Signed-off-by: Clemens Ladisch <[email protected]>
Signed-off-by: Stefan Richter <[email protected]>
This commit is contained in:
Clemens Ladisch 2012-06-13 22:28:24 +02:00 • committed by Stefan Richter
commit 9d23f9e946
1 changed files with 1 additions and 1 deletions
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drivers/firewire/core-iso.c
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@ -146,7 +146,7 @@ EXPORT_SYMBOL(fw_iso_buffer_destroy);
/* Convert DMA address to offset into virtually contiguous buffer. */
size_t fw_iso_buffer_lookup(struct fw_iso_buffer *buffer, dma_addr_t completed)
{
int i;
size_t i;
dma_addr_t address;
ssize_t offset;