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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2021-05-18 16:00:44 +0300
committerTakashi Iwai <tiwai@suse.de>2021-05-18 19:12:15 +0300
commitebd2a647e2f6b96ae8d2dec355e780b2e421bcf9 (patch)
treec239549da6972708285250e5b2438cda290cdc47 /sound/firewire
parent3e106f4f690ef0c1e8ce4fb8a01d6e281e6da300 (diff)
downloadlinux-ebd2a647e2f6b96ae8d2dec355e780b2e421bcf9.tar.xz
ALSA: firewire-lib: code refactoring for parser of IR context header
This commit refactors regarding to function argument for the length of isochronous packet payload. Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20210518130048.146596-6-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/amdtp-stream.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/sound/firewire/amdtp-stream.c b/sound/firewire/amdtp-stream.c
index ed8aea3cb1a1..1c530678e56a 100644
--- a/sound/firewire/amdtp-stream.c
+++ b/sound/firewire/amdtp-stream.c
@@ -632,33 +632,33 @@ static int check_cip_header(struct amdtp_stream *s, const __be32 *buf,
static int parse_ir_ctx_header(struct amdtp_stream *s, unsigned int cycle,
const __be32 *ctx_header,
- unsigned int *payload_length,
unsigned int *data_blocks,
unsigned int *data_block_counter,
unsigned int *syt, unsigned int packet_index, unsigned int index)
{
+ unsigned int payload_length;
const __be32 *cip_header;
unsigned int cip_header_size;
int err;
- *payload_length = be32_to_cpu(ctx_header[0]) >> ISO_DATA_LENGTH_SHIFT;
+ payload_length = be32_to_cpu(ctx_header[0]) >> ISO_DATA_LENGTH_SHIFT;
if (!(s->flags & CIP_NO_HEADER))
cip_header_size = 8;
else
cip_header_size = 0;
- if (*payload_length > cip_header_size + s->ctx_data.tx.max_ctx_payload_length) {
+ if (payload_length > cip_header_size + s->ctx_data.tx.max_ctx_payload_length) {
dev_err(&s->unit->device,
"Detect jumbo payload: %04x %04x\n",
- *payload_length, cip_header_size + s->ctx_data.tx.max_ctx_payload_length);
+ payload_length, cip_header_size + s->ctx_data.tx.max_ctx_payload_length);
return -EIO;
}
if (cip_header_size > 0) {
- if (*payload_length >= cip_header_size) {
+ if (payload_length >= cip_header_size) {
cip_header = ctx_header + 2;
- err = check_cip_header(s, cip_header, *payload_length, data_blocks,
+ err = check_cip_header(s, cip_header, payload_length, data_blocks,
data_block_counter, syt);
if (err < 0)
return err;
@@ -671,15 +671,14 @@ static int parse_ir_ctx_header(struct amdtp_stream *s, unsigned int cycle,
} else {
cip_header = NULL;
err = 0;
- *data_blocks = *payload_length / sizeof(__be32) /
- s->data_block_quadlets;
+ *data_blocks = payload_length / sizeof(__be32) / s->data_block_quadlets;
*syt = 0;
if (*data_block_counter == UINT_MAX)
*data_block_counter = 0;
}
- trace_amdtp_packet(s, cycle, cip_header, *payload_length, *data_blocks,
+ trace_amdtp_packet(s, cycle, cip_header, payload_length, *data_blocks,
*data_block_counter, packet_index, index);
return err;
@@ -727,14 +726,13 @@ static int generate_device_pkt_descs(struct amdtp_stream *s,
for (i = 0; i < packets; ++i) {
struct pkt_desc *desc = descs + i;
unsigned int cycle;
- unsigned int payload_length;
unsigned int data_blocks;
unsigned int syt;
cycle = compute_ohci_cycle_count(ctx_header[1]);
- err = parse_ir_ctx_header(s, cycle, ctx_header, &payload_length,
- &data_blocks, &dbc, &syt, packet_index, i);
+ err = parse_ir_ctx_header(s, cycle, ctx_header, &data_blocks, &dbc, &syt,
+ packet_index, i);
if (err < 0)
return err;