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author | Kristian Høgsberg <krh@redhat.com> | 2007-04-11 00:11:16 +0200 |
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committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-04-12 00:18:57 +0200 |
commit | 15536221d1f09ae7707f70a183045ee20d8bcf17 (patch) | |
tree | 1a2c4977632fee2464ebf63b95c14b74a4d16306 /drivers/firewire/fw-ohci.c | |
parent | firewire: Fix start on cycle 0 for IT, implement start on cycle for IR. (diff) | |
download | linux-15536221d1f09ae7707f70a183045ee20d8bcf17.tar.xz linux-15536221d1f09ae7707f70a183045ee20d8bcf17.zip |
firewire: Byteswap iso header so all headers are presented as be32.
Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/firewire/fw-ohci.c')
-rw-r--r-- | drivers/firewire/fw-ohci.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/firewire/fw-ohci.c b/drivers/firewire/fw-ohci.c index b941239671d6..2229ea0b630e 100644 --- a/drivers/firewire/fw-ohci.c +++ b/drivers/firewire/fw-ohci.c @@ -1257,7 +1257,13 @@ static int handle_ir_dualbuffer_packet(struct context *context, p = db + 1; end = p + header_length; while (p < end && i + ctx->base.header_size <= PAGE_SIZE) { - memcpy(ctx->header + i, p + 4, ctx->base.header_size); + /* The iso header is byteswapped to little endian by + * the controller, but the remaining header quadlets + * are big endian. We want to present all the headers + * as big endian, so we have to swap the first + * quadlet. */ + *(u32 *) (ctx->header + i) = __swab32(*(u32 *) (p + 4)); + memcpy(ctx->header + i + 4, p + 8, ctx->base.header_size - 4); i += ctx->base.header_size; p += ctx->base.header_size + 4; } |