From b7ab614f301741ae3cb61fb6a90e290083d3b95d Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Tue, 20 Oct 2015 23:46:57 +0900 Subject: [PATCH] ALSA: firewire-tascam: use better name for local variables to describe their intension In the callback function of asynchronous MIDI port, the intension of some local variables are not clear. This commit improves them. The 'len' variable is used to calculate the number of MIDI bytes including in the transaction. The 'consume' variable is used to return the actual number of consumed bytes in ALSA MIDI buffer. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/firewire/tascam/tascam-transaction.c | 24 +++++++++++----------- 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/sound/firewire/tascam/tascam-transaction.c b/sound/firewire/tascam/tascam-transaction.c index 7c8068469f57..ea88655e7e08 100644 --- a/sound/firewire/tascam/tascam-transaction.c +++ b/sound/firewire/tascam/tascam-transaction.c @@ -65,14 +65,14 @@ static int fill_message(struct snd_rawmidi_substream *substream, u8 *buf) int i, len, consume; u8 status; - len = snd_rawmidi_transmit_peek(substream, buf + 1, 3); - if (len == 0) + consume = snd_rawmidi_transmit_peek(substream, buf + 1, 3); + if (consume == 0) return 0; /* On exclusive message. */ if (tscm->on_sysex[port]) { /* Seek the end of exclusives. */ - for (i = 1; i < 4 || i < len; ++i) { + for (i = 1; i < 4 || i < consume; ++i) { if (buf[i] == 0xf7) { tscm->on_sysex[port] = false; break; @@ -81,14 +81,14 @@ static int fill_message(struct snd_rawmidi_substream *substream, u8 *buf) /* At the end of exclusive message, use label 0x07. */ if (!tscm->on_sysex[port]) { - len = i; + consume = i; buf[0] = (port << 4) | 0x07; /* During exclusive message, use label 0x04. */ - } else if (len == 3) { + } else if (consume == 3) { buf[0] = (port << 4) | 0x04; /* We need to fill whole 3 bytes. Go to next change. */ } else { - len = 0; + consume = 0; } } else { /* The beginning of exclusives. */ @@ -104,8 +104,8 @@ static int fill_message(struct snd_rawmidi_substream *substream, u8 *buf) status = buf[1]; /* Calculate consume bytes. */ - consume = calculate_message_bytes(status); - if (consume <= 0) + len = calculate_message_bytes(status); + if (len <= 0) return 0; /* On running-status. */ @@ -119,16 +119,16 @@ static int fill_message(struct snd_rawmidi_substream *substream, u8 *buf) } /* Confirm length. */ - if (len < consume) + if (consume < len) return 0; - if (len > consume) - len = consume; + if (consume > len) + consume = len; } buf[0] = (port << 4) | (buf[1] >> 4); } - return len; + return consume; } static void handle_midi_tx(struct fw_card *card, struct fw_request *request, -- 2.20.1