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firewire: ohci: optimize control bit checks 

Doing the endian conversion on the constant instead of the memory
field allows the compiler to do the conversion at compile time.

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 2012-03-18 19:03:26 +01:00 committed by Stefan Richter
parent b9b5bbfda6
commit 90fcc89873
1 changed files with 3 additions and 3 deletions
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6
drivers/firewire/ohci.c
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@ -2728,7 +2728,7 @@ static int handle_ir_packet_per_buffer(struct context *context,
p = last + 1;
copy_iso_headers(ctx, p);
if (le16_to_cpu(last->control) & DESCRIPTOR_IRQ_ALWAYS) {
if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) {
ir_header = (__le32 *) p;
ctx->base.callback.sc(&ctx->base,
le32_to_cpu(ir_header[0]) & 0xffff,
@ -2760,7 +2760,7 @@ static int handle_ir_buffer_fill(struct context *context,
le16_to_cpu(last->req_count),
DMA_FROM_DEVICE);
if (le16_to_cpu(last->control) & DESCRIPTOR_IRQ_ALWAYS)
if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS))
ctx->base.callback.mc(&ctx->base,
le32_to_cpu(last->data_address) +
le16_to_cpu(last->req_count),
@ -2832,7 +2832,7 @@ static int handle_it_packet(struct context *context,
le16_to_cpu(pd->res_count));
ctx->header_length += 4;
}
if (le16_to_cpu(last->control) & DESCRIPTOR_IRQ_ALWAYS) {
if (last->control & cpu_to_le16(DESCRIPTOR_IRQ_ALWAYS)) {
ctx->base.callback.sc(&ctx->base, le16_to_cpu(last->res_count),
ctx->header_length, ctx->header,
ctx->base.callback_data);