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firewire: ohci: prevent aliasing of locally handled register addresses

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We must compute the offset from the CSR register base with the
full 48 address bits to prevent matching with addresses whose
lower 32 bits happen to be equal with one of the specially
handled registers.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Clemens Ladisch 2010-04-12 10:35:30 +02:00 committed by Stefan Richter
parent d6372b6e7c
commit 2608203daf
1 changed files with 1 additions and 2 deletions
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3
drivers/firewire/ohci.c
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@ -1198,8 +1198,7 @@ static void handle_local_lock(struct fw_ohci *ohci,
static void handle_local_request(struct context *ctx, struct fw_packet *packet)
{
u64 offset;
u32 csr;
u64 offset, csr;
if (ctx == &ctx->ohci->at_request_ctx) {
packet->ack = ACK_PENDING;