OK, Thank you for your reply. -----邮件原件----- 发件人: Takashi Iwai <tiwai@xxxxxxx> 发送时间: 2023年7月4日 17:32 收件人: 杜敏杰 <duminjie@xxxxxxxx> 抄送: Jaroslav Kysela <perex@xxxxxxxx>; Takashi Iwai <tiwai@xxxxxxxx>; Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>; moderated list:SOUND <alsa-devel@xxxxxxxxxxxxxxxx>; open list <linux-kernel@xxxxxxxxxxxxxxx>; opensource.kernel <opensource.kernel@xxxxxxxx> 主题: Re: [PATCH v1] sound: riptide: Remove duplicate judgments code [Some people who received this message don't often get email from tiwai@xxxxxxx. Learn why this is important at https://aka.ms/LearnAboutSenderIdentification ] On Tue, 04 Jul 2023 11:11:31 +0200, Minjie Du wrote: > > Fix: delate duplicate judgments > Could you help check it out? Thank you! I'm afraid that it's no right fix. The duplicated calls actually send two commands sequentially, and if you drop one, it'll change the behavior completely. Honestly speaking, I have no idea whether sending twice is mandatory for this chip. It's an ugly driver by reverse engineering, so who knows. We can get rid of it in future. But it's a different topic. thanks, Takashi > > Signed-off-by: Minjie Du <duminjie@xxxxxxxx> > --- > sound/pci/riptide/riptide.c | 11 ++++------- > 1 file changed, 4 insertions(+), 7 deletions(-) > > diff --git a/sound/pci/riptide/riptide.c b/sound/pci/riptide/riptide.c > index b37c877c2..9bf4b2e86 100644 > --- a/sound/pci/riptide/riptide.c > +++ b/sound/pci/riptide/riptide.c > @@ -958,8 +958,7 @@ getsourcesink(struct cmdif *cif, unsigned char > source, unsigned char sink, { > union cmdret rptr = CMDRET_ZERO; > > - if (SEND_RSSV(cif, source, sink, &rptr) && > - SEND_RSSV(cif, source, sink, &rptr)) > + if (SEND_RSSV(cif, source, sink, &rptr)) > return -EIO; > *a = rptr.retbytes[0]; > *b = rptr.retbytes[1]; > @@ -978,8 +977,7 @@ getsamplerate(struct cmdif *cif, unsigned char *intdec, unsigned int *rate) > s = intdec; > for (i = 0; i < 2; i++) { > if (*s != 0xff) { > - if (SEND_RSRC(cif, *s, &rptr) && > - SEND_RSRC(cif, *s, &rptr)) > + if (SEND_RSRC(cif, *s, &rptr)) > return -EIO; > p[i] += rptr.retwords[1]; > p[i] *= rptr.retwords[2]; @@ -1013,8 +1011,7 @@ > setsampleformat(struct cmdif *cif, > sig = snd_pcm_format_unsigned(format) != 0; > order = snd_pcm_format_big_endian(format) != 0; > > - if (SEND_SETF(cif, mixer, w, ch, order, sig, id) && > - SEND_SETF(cif, mixer, w, ch, order, sig, id)) { > + if (SEND_SETF(cif, mixer, w, ch, order, sig, id)) { > snd_printdd("setsampleformat failed\n"); > return -EIO; > } > @@ -1060,7 +1057,7 @@ getmixer(struct cmdif *cif, short num, unsigned > short *rval, { > union cmdret rptr = CMDRET_ZERO; > > - if (SEND_RDGV(cif, num, num, &rptr) && SEND_RDGV(cif, num, num, &rptr)) > + if (SEND_RDGV(cif, num, num, &rptr)) > return -EIO; > *rval = rptr.retwords[0]; > *lval = rptr.retwords[1]; > -- > 2.39.0 >
