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75b1a8f9d6
strlcpy is deprecated. see: Documentation/process/deprecated.rst Change the calls that do not use the strlcpy return value to the preferred strscpy. Done with cocci script: @@ expression e1, e2, e3; @@ - strlcpy( + strscpy( e1, e2, e3); This cocci script leaves the instances where the return value is used unchanged. After this patch, sound/ has 3 uses of strlcpy() that need to be manually inspected for conversion and changed one day. $ git grep -w strlcpy sound/ sound/usb/card.c: len = strlcpy(card->longname, s, sizeof(card->longname)); sound/usb/mixer.c: return strlcpy(buf, p->name, buflen); sound/usb/mixer.c: return strlcpy(buf, p->names[index], buflen); Miscellenea: o Remove trailing whitespace in conversion of sound/core/hwdep.c Link: https://lore.kernel.org/lkml/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Joe Perches <joe@perches.com> Acked-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/22b393d1790bb268769d0bab7bacf0866dcb0c14.camel@perches.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Helper functions for jack-detection kcontrols
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*
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* Copyright (c) 2011 Takashi Iwai <tiwai@suse.de>
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*/
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#include <linux/kernel.h>
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#include <linux/export.h>
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#include <sound/core.h>
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#include <sound/control.h>
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#define jack_detect_kctl_info snd_ctl_boolean_mono_info
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static int jack_detect_kctl_get(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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ucontrol->value.integer.value[0] = kcontrol->private_value;
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return 0;
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}
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static const struct snd_kcontrol_new jack_detect_kctl = {
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/* name is filled later */
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.iface = SNDRV_CTL_ELEM_IFACE_CARD,
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.access = SNDRV_CTL_ELEM_ACCESS_READ,
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.info = jack_detect_kctl_info,
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.get = jack_detect_kctl_get,
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};
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static int get_available_index(struct snd_card *card, const char *name)
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{
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struct snd_ctl_elem_id sid;
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memset(&sid, 0, sizeof(sid));
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sid.index = 0;
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sid.iface = SNDRV_CTL_ELEM_IFACE_CARD;
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strscpy(sid.name, name, sizeof(sid.name));
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while (snd_ctl_find_id(card, &sid)) {
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sid.index++;
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/* reset numid; otherwise snd_ctl_find_id() hits this again */
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sid.numid = 0;
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}
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return sid.index;
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}
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static void jack_kctl_name_gen(char *name, const char *src_name, int size)
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{
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size_t count = strlen(src_name);
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bool need_cat = true;
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/* remove redundant " Jack" from src_name */
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if (count >= 5)
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need_cat = strncmp(&src_name[count - 5], " Jack", 5) ? true : false;
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snprintf(name, size, need_cat ? "%s Jack" : "%s", src_name);
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}
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struct snd_kcontrol *
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snd_kctl_jack_new(const char *name, struct snd_card *card)
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{
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struct snd_kcontrol *kctl;
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kctl = snd_ctl_new1(&jack_detect_kctl, NULL);
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if (!kctl)
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return NULL;
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jack_kctl_name_gen(kctl->id.name, name, sizeof(kctl->id.name));
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kctl->id.index = get_available_index(card, kctl->id.name);
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kctl->private_value = 0;
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return kctl;
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}
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void snd_kctl_jack_report(struct snd_card *card,
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struct snd_kcontrol *kctl, bool status)
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{
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if (kctl->private_value == status)
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return;
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kctl->private_value = status;
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snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
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}
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