tree: git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
topic/firewire
head: 9b1ee0b2cb8bffdbb3003b1d5205f3ae0592c15a
commit: 1017abed18ae7087e7f3e256c48421d09d83176e [18/49] ALSA: firewire-lib:
Add some AV/C general commands
reproduce: make C=1 CF=-D__CHECK_ENDIAN__
>> sound/firewire/amdtp.c:199:29: sparse: cannot size expression
git remote add sound
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound.git
git remote update sound
git checkout 1017abed18ae7087e7f3e256c48421d09d83176e
vim +199 sound/firewire/amdtp.c
31ef9134 Clemens Ladisch 2011-03-15 183 * changed while the stream is
running.
31ef9134 Clemens Ladisch 2011-03-15 184 */
be4a2894 Takashi Sakamoto 2014-04-25 185 void
amdtp_stream_set_parameters(struct amdtp_stream *s,
be4a2894 Takashi Sakamoto 2014-04-25 186
unsigned int rate,
be4a2894 Takashi Sakamoto 2014-04-25 187
unsigned int pcm_channels,
be4a2894 Takashi Sakamoto 2014-04-25 188
unsigned int midi_ports)
31ef9134 Clemens Ladisch 2011-03-15 189 {
77d2a8a4 Takashi Sakamoto 2014-04-25 190 unsigned int i, sfc,
midi_channels;
31ef9134 Clemens Ladisch 2011-03-15 191
83d8d72d Takashi Sakamoto 2014-04-25 192 midi_channels =
DIV_ROUND_UP(midi_ports, 8);
83d8d72d Takashi Sakamoto 2014-04-25 193
77d2a8a4 Takashi Sakamoto 2014-04-25 194 if
(WARN_ON(amdtp_stream_running(s)) |
77d2a8a4 Takashi Sakamoto 2014-04-25 195 WARN_ON(pcm_channels >
AMDTP_MAX_CHANNELS_FOR_PCM) |
83d8d72d Takashi Sakamoto 2014-04-25 196 WARN_ON(midi_channels >
AMDTP_MAX_CHANNELS_FOR_MIDI))
31ef9134 Clemens Ladisch 2011-03-15 197 return;
31ef9134 Clemens Ladisch 2011-03-15 198
1017abed Takashi Sakamoto 2014-04-25 @199 for (sfc = 0; sfc <
sizeof(amdtp_rate_table); ++sfc)
The warning seems to be caused by a problem in sparse but anyway, this
should be "sfc < ARRAY_SIZE(amdtp_rate_table)" instead of sizeof(). The
amdtp_rate_table[] array holds integers so sizeof() is 4x larger than
we want.
1017abed Takashi Sakamoto 2014-04-25 200 if
(amdtp_rate_table[sfc] == rate)
e84d15f6 Clemens Ladisch 2011-09-04 201 goto sfc_found;
31ef9134 Clemens Ladisch 2011-03-15 202 WARN_ON(1);
e84d15f6 Clemens Ladisch 2011-09-04 203 return;
e84d15f6 Clemens Ladisch 2011-09-04 204
e84d15f6 Clemens Ladisch 2011-09-04 205 sfc_found:
10550bea Takashi Sakamoto 2014-04-25 206 s->pcm_channels = pcm_channels;
e84d15f6 Clemens Ladisch 2011-09-04 207 s->sfc = sfc;
---
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