For sysfs outputs, it's safer to use a new helper, sysfs_emit(), instead of the raw sprintf() & co. This patch replaces those usages straightforwardly with new helpers, sysfs_emit() and sysfs_emit_at().
Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/hda/hdac_sysfs.c | 42 +++++++++++++++++++-------------------- sound/pci/hda/hda_sysfs.c | 23 ++++++++++----------- 2 files changed, 32 insertions(+), 33 deletions(-)
diff --git a/sound/hda/hdac_sysfs.c b/sound/hda/hdac_sysfs.c index 0d7771fca9f0..e47de49a32e3 100644 --- a/sound/hda/hdac_sysfs.c +++ b/sound/hda/hdac_sysfs.c @@ -22,7 +22,7 @@ static ssize_t type##_show(struct device *dev, \ char *buf) \ { \ struct hdac_device *codec = dev_to_hdac_dev(dev); \ - return sprintf(buf, "0x%x\n", codec->type); \ + return sysfs_emit(buf, "0x%x\n", codec->type); \ } \ static DEVICE_ATTR_RO(type)
@@ -32,8 +32,8 @@ static ssize_t type##_show(struct device *dev, \ char *buf) \ { \ struct hdac_device *codec = dev_to_hdac_dev(dev); \ - return sprintf(buf, "%s\n", \ - codec->type ? codec->type : ""); \ + return sysfs_emit(buf, "%s\n", \ + codec->type ? codec->type : ""); \ } \ static DEVICE_ATTR_RO(type)
@@ -161,7 +161,7 @@ static struct kobj_type widget_ktype = { static ssize_t caps_show(struct hdac_device *codec, hda_nid_t nid, struct widget_attribute *attr, char *buf) { - return sprintf(buf, "0x%08x\n", get_wcaps(codec, nid)); + return sysfs_emit(buf, "0x%08x\n", get_wcaps(codec, nid)); }
static ssize_t pin_caps_show(struct hdac_device *codec, hda_nid_t nid, @@ -169,8 +169,8 @@ static ssize_t pin_caps_show(struct hdac_device *codec, hda_nid_t nid, { if (get_wcaps_type(get_wcaps(codec, nid)) != AC_WID_PIN) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_PIN_CAP)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_PIN_CAP)); }
static ssize_t pin_cfg_show(struct hdac_device *codec, hda_nid_t nid, @@ -182,7 +182,7 @@ static ssize_t pin_cfg_show(struct hdac_device *codec, hda_nid_t nid, return 0; if (snd_hdac_read(codec, nid, AC_VERB_GET_CONFIG_DEFAULT, 0, &val)) return 0; - return sprintf(buf, "0x%08x\n", val); + return sysfs_emit(buf, "0x%08x\n", val); }
static bool has_pcm_cap(struct hdac_device *codec, hda_nid_t nid) @@ -203,8 +203,8 @@ static ssize_t pcm_caps_show(struct hdac_device *codec, hda_nid_t nid, { if (!has_pcm_cap(codec, nid)) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_PCM)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_PCM)); }
static ssize_t pcm_formats_show(struct hdac_device *codec, hda_nid_t nid, @@ -212,8 +212,8 @@ static ssize_t pcm_formats_show(struct hdac_device *codec, hda_nid_t nid, { if (!has_pcm_cap(codec, nid)) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_STREAM)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_STREAM)); }
static ssize_t amp_in_caps_show(struct hdac_device *codec, hda_nid_t nid, @@ -221,8 +221,8 @@ static ssize_t amp_in_caps_show(struct hdac_device *codec, hda_nid_t nid, { if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_IN_AMP)) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_AMP_IN_CAP)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_AMP_IN_CAP)); }
static ssize_t amp_out_caps_show(struct hdac_device *codec, hda_nid_t nid, @@ -230,8 +230,8 @@ static ssize_t amp_out_caps_show(struct hdac_device *codec, hda_nid_t nid, { if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_OUT_AMP)) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_AMP_OUT_CAP)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_AMP_OUT_CAP)); }
static ssize_t power_caps_show(struct hdac_device *codec, hda_nid_t nid, @@ -239,15 +239,15 @@ static ssize_t power_caps_show(struct hdac_device *codec, hda_nid_t nid, { if (nid != codec->afg && !(get_wcaps(codec, nid) & AC_WCAP_POWER)) return 0; - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_POWER_STATE)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_POWER_STATE)); }
static ssize_t gpio_caps_show(struct hdac_device *codec, hda_nid_t nid, struct widget_attribute *attr, char *buf) { - return sprintf(buf, "0x%08x\n", - snd_hdac_read_parm(codec, nid, AC_PAR_GPIO_CAP)); + return sysfs_emit(buf, "0x%08x\n", + snd_hdac_read_parm(codec, nid, AC_PAR_GPIO_CAP)); }
static ssize_t connections_show(struct hdac_device *codec, hda_nid_t nid, @@ -261,8 +261,8 @@ static ssize_t connections_show(struct hdac_device *codec, hda_nid_t nid, if (nconns <= 0) return nconns; for (i = 0; i < nconns; i++) - ret += sprintf(buf + ret, "%s0x%02x", i ? " " : "", list[i]); - ret += sprintf(buf + ret, "\n"); + ret += sysfs_emit_at(buf, ret, "%s0x%02x", i ? " " : "", list[i]); + ret += sysfs_emit_at(buf, ret, "\n"); return ret; }
diff --git a/sound/pci/hda/hda_sysfs.c b/sound/pci/hda/hda_sysfs.c index d5ffcba794e5..bf951c10ae61 100644 --- a/sound/pci/hda/hda_sysfs.c +++ b/sound/pci/hda/hda_sysfs.c @@ -33,7 +33,7 @@ static ssize_t power_on_acct_show(struct device *dev, { struct hda_codec *codec = dev_get_drvdata(dev); snd_hda_update_power_acct(codec); - return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct)); + return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_on_acct)); }
static ssize_t power_off_acct_show(struct device *dev, @@ -42,7 +42,7 @@ static ssize_t power_off_acct_show(struct device *dev, { struct hda_codec *codec = dev_get_drvdata(dev); snd_hda_update_power_acct(codec); - return sprintf(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct)); + return sysfs_emit(buf, "%u\n", jiffies_to_msecs(codec->power_off_acct)); }
static DEVICE_ATTR_RO(power_on_acct); @@ -55,7 +55,7 @@ static ssize_t type##_show(struct device *dev, \ char *buf) \ { \ struct hda_codec *codec = dev_get_drvdata(dev); \ - return sprintf(buf, "0x%x\n", codec->field); \ + return sysfs_emit(buf, "0x%x\n", codec->field); \ }
#define CODEC_INFO_STR_SHOW(type, field) \ @@ -64,8 +64,8 @@ static ssize_t type##_show(struct device *dev, \ char *buf) \ { \ struct hda_codec *codec = dev_get_drvdata(dev); \ - return sprintf(buf, "%s\n", \ - codec->field ? codec->field : ""); \ + return sysfs_emit(buf, "%s\n", \ + codec->field ? codec->field : ""); \ }
CODEC_INFO_SHOW(vendor_id, core.vendor_id); @@ -85,8 +85,8 @@ static ssize_t pin_configs_show(struct hda_codec *codec, int i, len = 0; mutex_lock(&codec->user_mutex); snd_array_for_each(list, i, pin) { - len += sprintf(buf + len, "0x%02x 0x%08x\n", - pin->nid, pin->cfg); + len += sysfs_emit_at(buf, len, "0x%02x 0x%08x\n", + pin->nid, pin->cfg); } mutex_unlock(&codec->user_mutex); return len; @@ -222,9 +222,8 @@ static ssize_t init_verbs_show(struct device *dev, int i, len = 0; mutex_lock(&codec->user_mutex); snd_array_for_each(&codec->init_verbs, i, v) { - len += scnprintf(buf + len, PAGE_SIZE - len, - "0x%02x 0x%03x 0x%04x\n", - v->nid, v->verb, v->param); + len += sysfs_emit_at(buf, len, "0x%02x 0x%03x 0x%04x\n", + v->nid, v->verb, v->param); } mutex_unlock(&codec->user_mutex); return len; @@ -272,8 +271,8 @@ static ssize_t hints_show(struct device *dev, int i, len = 0; mutex_lock(&codec->user_mutex); snd_array_for_each(&codec->hints, i, hint) { - len += scnprintf(buf + len, PAGE_SIZE - len, - "%s = %s\n", hint->key, hint->val); + len += sysfs_emit_at(buf, len, "%s = %s\n", + hint->key, hint->val); } mutex_unlock(&codec->user_mutex); return len;