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Date: Sun, 21 Dec 2014 02:17:05 +0100 From: Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> To: Andy Walls <awalls@...metrocast.net> Cc: Mauro Carvalho Chehab <m.chehab@...sung.com>, ivtv-devel@...vdriver.org, linux-media@...r.kernel.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] media: pci: cx18: cx18-alsa-mixer.c: Remove some unused functions 2014-12-21 1:06 GMT+01:00 Andy Walls <awalls@...metrocast.net>: > On December 20, 2014 5:35:17 PM EST, Rickard Strandqvist <rickard_strandqvist@...ctrumdigital.se> wrote: >>Removes some functions that are not used anywhere: >>snd_cx18_mixer_tv_vol_get() snd_cx18_mixer_tv_vol_info() >>snd_cx18_mixer_tv_vol_put() >> >>This was partially found by using a static code analysis program called >>cppcheck. >> >>Signed-off-by: Rickard Strandqvist >><rickard_strandqvist@...ctrumdigital.se> >>--- >>drivers/media/pci/cx18/cx18-alsa-mixer.c | 62 >>------------------------------ >> 1 file changed, 62 deletions(-) >> >>diff --git a/drivers/media/pci/cx18/cx18-alsa-mixer.c >>b/drivers/media/pci/cx18/cx18-alsa-mixer.c >>index 341bddc..e7b0a1f 100644 >>--- a/drivers/media/pci/cx18/cx18-alsa-mixer.c >>+++ b/drivers/media/pci/cx18/cx18-alsa-mixer.c >>@@ -69,68 +69,6 @@ static inline int cx18_av_vol_to_dB(int v) >> return (v >> 9) - 119; >> } >> >>-static int snd_cx18_mixer_tv_vol_info(struct snd_kcontrol *kcontrol, >>- struct snd_ctl_elem_info *uinfo) >>-{ >>- uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; >>- uinfo->count = 1; >>- /* We're already translating values, just keep this control in dB */ >>- uinfo->value.integer.min = -96; >>- uinfo->value.integer.max = 8; >>- uinfo->value.integer.step = 1; >>- return 0; >>-} >>- >>-static int snd_cx18_mixer_tv_vol_get(struct snd_kcontrol *kctl, >>- struct snd_ctl_elem_value *uctl) >>-{ >>- struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl); >>- struct cx18 *cx = to_cx18(cxsc->v4l2_dev); >>- struct v4l2_control vctrl; >>- int ret; >>- >>- vctrl.id = V4L2_CID_AUDIO_VOLUME; >>- vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); >>- >>- snd_cx18_lock(cxsc); >>- ret = v4l2_subdev_call(cx->sd_av, core, g_ctrl, &vctrl); >>- snd_cx18_unlock(cxsc); >>- >>- if (!ret) >>- uctl->value.integer.value[0] = cx18_av_vol_to_dB(vctrl.value); >>- return ret; >>-} >>- >>-static int snd_cx18_mixer_tv_vol_put(struct snd_kcontrol *kctl, >>- struct snd_ctl_elem_value *uctl) >>-{ >>- struct snd_cx18_card *cxsc = snd_kcontrol_chip(kctl); >>- struct cx18 *cx = to_cx18(cxsc->v4l2_dev); >>- struct v4l2_control vctrl; >>- int ret; >>- >>- vctrl.id = V4L2_CID_AUDIO_VOLUME; >>- vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); >>- >>- snd_cx18_lock(cxsc); >>- >>- /* Fetch current state */ >>- ret = v4l2_subdev_call(cx->sd_av, core, g_ctrl, &vctrl); >>- >>- if (ret || >>- (cx18_av_vol_to_dB(vctrl.value) != uctl->value.integer.value[0])) >>{ >>- >>- /* Set, if needed */ >>- vctrl.value = dB_to_cx18_av_vol(uctl->value.integer.value[0]); >>- ret = v4l2_subdev_call(cx->sd_av, core, s_ctrl, &vctrl); >>- if (!ret) >>- ret = 1; /* Indicate control was changed w/o error */ >>- } >>- snd_cx18_unlock(cxsc); >>- >>- return ret; >>-} >>- >> >>/* This is a bit of overkill, the slider is already in dB internally */ >>static DECLARE_TLV_DB_SCALE(snd_cx18_mixer_tv_vol_db_scale, -9600, 100, >>0); > > Really? Did you try to compile the file after this patch? > > http://git.linuxtv.org/cgit.cgi/media_tree.git/tree/drivers/media/pci/cx18/cx18-alsa-mixer.c#n143 > > They are referenced later in the same file. > > This is only half a fix. > > You can either remove the cx18-alsa-mixer.* files and from the build system, or even better,you can hook-up and initialize these callbacks with alsa so alsa mixer controls show up for cx18. :) > Hi Ok sorry :-( Sure, I compile everything as allyesconfig, allmodconfig and allnoconfig. So snd_cx18_mixer_tv_volume_info is the same as snd_cx18_mixer_tv_vol_info then. Would gladly done something a little more concrete. But first I want to see if as I can go through all of the approximately 2000 functions that are not in use. Kind regards Rickard Strandqvist -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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