From 13e6756b68f0fce6491342f65837dfa47f8c4ba0 Mon Sep 17 00:00:00 2001 From: ye xingchen Date: Thu, 1 Dec 2022 19:27:59 +0800 Subject: media: pvrusb2: use sysfs_emit() to instead of scnprintf() Follow the advice of the Documentation/filesystems/sysfs.rst and show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. Signed-off-by: ye xingchen Reviewed-by: Tommaso Merciai Signed-off-by: Hans Verkuil --- drivers/media/usb/pvrusb2/pvrusb2-sysfs.c | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c b/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c index a8c0b513e58e..3077399901aa 100644 --- a/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c +++ b/drivers/media/usb/pvrusb2/pvrusb2-sysfs.c @@ -77,7 +77,7 @@ static ssize_t show_name(struct device *class_dev, pvr2_sysfs_trace("pvr2_sysfs(%p) show_name(cid=%d) is %s", cip->chptr, cip->ctl_id, name); if (!name) return -EINVAL; - return scnprintf(buf, PAGE_SIZE, "%s\n", name); + return sysfs_emit(buf, "%s\n", name); } static ssize_t show_type(struct device *class_dev, @@ -98,7 +98,7 @@ static ssize_t show_type(struct device *class_dev, } pvr2_sysfs_trace("pvr2_sysfs(%p) show_type(cid=%d) is %s", cip->chptr, cip->ctl_id, name); - return scnprintf(buf, PAGE_SIZE, "%s\n", name); + return sysfs_emit(buf, "%s\n", name); } static ssize_t show_min(struct device *class_dev, @@ -111,7 +111,7 @@ static ssize_t show_min(struct device *class_dev, val = pvr2_ctrl_get_min(cip->cptr); pvr2_sysfs_trace("pvr2_sysfs(%p) show_min(cid=%d) is %ld", cip->chptr, cip->ctl_id, val); - return scnprintf(buf, PAGE_SIZE, "%ld\n", val); + return sysfs_emit(buf, "%ld\n", val); } static ssize_t show_max(struct device *class_dev, @@ -124,7 +124,7 @@ static ssize_t show_max(struct device *class_dev, val = pvr2_ctrl_get_max(cip->cptr); pvr2_sysfs_trace("pvr2_sysfs(%p) show_max(cid=%d) is %ld", cip->chptr, cip->ctl_id, val); - return scnprintf(buf, PAGE_SIZE, "%ld\n", val); + return sysfs_emit(buf, "%ld\n", val); } static ssize_t show_def(struct device *class_dev, @@ -544,7 +544,7 @@ static ssize_t v4l_minor_number_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%d\n", + return sysfs_emit(buf, "%d\n", pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw, pvr2_v4l_type_video)); } @@ -556,7 +556,7 @@ static ssize_t bus_info_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%s\n", + return sysfs_emit(buf, "%s\n", pvr2_hdw_get_bus_info(sfp->channel.hdw)); } @@ -567,7 +567,7 @@ static ssize_t hdw_name_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%s\n", + return sysfs_emit(buf, "%s\n", pvr2_hdw_get_type(sfp->channel.hdw)); } @@ -578,7 +578,7 @@ static ssize_t hdw_desc_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%s\n", + return sysfs_emit(buf, "%s\n", pvr2_hdw_get_desc(sfp->channel.hdw)); } @@ -590,7 +590,7 @@ static ssize_t v4l_radio_minor_number_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%d\n", + return sysfs_emit(buf, "%d\n", pvr2_hdw_v4l_get_minor_number(sfp->channel.hdw, pvr2_v4l_type_radio)); } @@ -602,7 +602,7 @@ static ssize_t unit_number_show(struct device *class_dev, struct pvr2_sysfs *sfp; sfp = dev_get_drvdata(class_dev); if (!sfp) return -EINVAL; - return scnprintf(buf,PAGE_SIZE,"%d\n", + return sysfs_emit(buf, "%d\n", pvr2_hdw_get_unit_number(sfp->channel.hdw)); } -- cgit v1.2.3