video: omapfb: replace snprintf in show functions with sysfs_emit

coccicheck complains about the use of snprintf() in sysfs show functions.

Fix the coccicheck warning:
WARNING: use scnprintf or sprintf.

Use sysfs_emit instead of scnprintf or sprintf makes more sense.

Signed-off-by: Qing Wang <[e-mail]>
Signed-off-by: Sam Ravnborg <[e-mail]>
Link: https://patchwork.freedesktop.org/patch/msgid/[e-mail]

drivers/video/fbdev/omap2/omapfb/dss/display-sysfs.c

···
 
 static ssize_t display_name_show(struct omap_dss_device *dssdev, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			dssdev->name ?
 			dssdev->name : "");
 }
 
 static ssize_t display_enabled_show(struct omap_dss_device *dssdev, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			omapdss_device_is_enabled(dssdev));
 }
 
···
 
 static ssize_t display_tear_show(struct omap_dss_device *dssdev, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			dssdev->driver->get_te ?
 			dssdev->driver->get_te(dssdev) : 0);
 }
···
 
 	dssdev->driver->get_timings(dssdev, &t);
 
-	return snprintf(buf, PAGE_SIZE, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
+	return sysfs_emit(buf, "%u,%u/%u/%u/%u,%u/%u/%u/%u\n",
 			t.pixelclock,
 			t.x_res, t.hfp, t.hbp, t.hsw,
 			t.y_res, t.vfp, t.vbp, t.vsw);
···
 	if (!dssdev->driver->get_rotate)
 		return -ENOENT;
 	rotate = dssdev->driver->get_rotate(dssdev);
-	return snprintf(buf, PAGE_SIZE, "%u\n", rotate);
+	return sysfs_emit(buf, "%u\n", rotate);
 }
 
 static ssize_t display_rotate_store(struct omap_dss_device *dssdev,
···
 	if (!dssdev->driver->get_mirror)
 		return -ENOENT;
 	mirror = dssdev->driver->get_mirror(dssdev);
-	return snprintf(buf, PAGE_SIZE, "%u\n", mirror);
+	return sysfs_emit(buf, "%u\n", mirror);
 }
 
 static ssize_t display_mirror_store(struct omap_dss_device *dssdev,
···
 
 	wss = dssdev->driver->get_wss(dssdev);
 
-	return snprintf(buf, PAGE_SIZE, "0x%05x\n", wss);
+	return sysfs_emit(buf, "0x%05x\n", wss);
 }
 
 static ssize_t display_wss_store(struct omap_dss_device *dssdev,

drivers/video/fbdev/omap2/omapfb/dss/manager-sysfs.c

···
 
 static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
+	return sysfs_emit(buf, "%s\n", mgr->name);
 }
 
 static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
 {
 	struct omap_dss_device *dssdev = mgr->get_device(mgr);
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", dssdev ?
+	return sysfs_emit(buf, "%s\n", dssdev ?
 			dssdev->name : "<none>");
 }
 
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%#x\n", info.default_color);
+	return sysfs_emit(buf, "%#x\n", info.default_color);
 }
 
 static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
···
 	key_type = info.trans_key_type;
 	BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
+	return sysfs_emit(buf, "%s\n", trans_key_type_str[key_type]);
 }
 
 static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%#x\n", info.trans_key);
+	return sysfs_emit(buf, "%#x\n", info.trans_key);
 }
 
 static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", info.trans_enabled);
+	return sysfs_emit(buf, "%d\n", info.trans_enabled);
 }
 
 static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 		info.partial_alpha_enabled);
 }
 
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", info.cpr_enable);
+	return sysfs_emit(buf, "%d\n", info.cpr_enable);
 }
 
 static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
···
 
 	mgr->get_manager_info(mgr, &info);
 
-	return snprintf(buf, PAGE_SIZE,
+	return sysfs_emit(buf,
 			"%d %d %d %d %d %d %d %d %d\n",
 			info.cpr_coefs.rr,
 			info.cpr_coefs.rg,

drivers/video/fbdev/omap2/omapfb/dss/overlay-sysfs.c

···
 
 static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name);
+	return sysfs_emit(buf, "%s\n", ovl->name);
 }
 
 static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%s\n",
+	return sysfs_emit(buf, "%s\n",
 			ovl->manager ? ovl->manager->name : "<none>");
 }
 
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+	return sysfs_emit(buf, "%d,%d\n",
 			info.width, info.height);
 }
 
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", info.screen_width);
+	return sysfs_emit(buf, "%d\n", info.screen_width);
 }
 
 static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf)
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+	return sysfs_emit(buf, "%d,%d\n",
 			info.pos_x, info.pos_y);
 }
 
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d,%d\n",
+	return sysfs_emit(buf, "%d,%d\n",
 			info.out_width, info.out_height);
 }
 
···
 
 static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "%d\n", ovl->is_enabled(ovl));
+	return sysfs_emit(buf, "%d\n", ovl->is_enabled(ovl));
 }
 
 static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf,
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			info.global_alpha);
 }
 
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
+	return sysfs_emit(buf, "%d\n",
 			info.pre_mult_alpha);
 }
 
···
 
 	ovl->get_overlay_info(ovl, &info);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", info.zorder);
+	return sysfs_emit(buf, "%d\n", info.zorder);
 }
 
 static ssize_t overlay_zorder_store(struct omap_overlay *ovl,

drivers/video/fbdev/omap2/omapfb/omapfb-sysfs.c

···
 	struct fb_info *fbi = dev_get_drvdata(dev);
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", ofbi->rotation_type);
+	return sysfs_emit(buf, "%d\n", ofbi->rotation_type);
 }
 
 static ssize_t store_rotate_type(struct device *dev,
···
 	struct fb_info *fbi = dev_get_drvdata(dev);
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", ofbi->mirror);
+	return sysfs_emit(buf, "%d\n", ofbi->mirror);
 }
 
 static ssize_t store_mirror(struct device *dev,
···
 	struct fb_info *fbi = dev_get_drvdata(dev);
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 
-	return snprintf(buf, PAGE_SIZE, "%lu\n", ofbi->region->size);
+	return sysfs_emit(buf, "%lu\n", ofbi->region->size);
 }
 
 static ssize_t store_size(struct device *dev, struct device_attribute *attr,
···
 	struct fb_info *fbi = dev_get_drvdata(dev);
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 
-	return snprintf(buf, PAGE_SIZE, "%0x\n", ofbi->region->paddr);
+	return sysfs_emit(buf, "%0x\n", ofbi->region->paddr);
 }
 
 static ssize_t show_virt(struct device *dev,
···
 	struct fb_info *fbi = dev_get_drvdata(dev);
 	struct omapfb_info *ofbi = FB2OFB(fbi);
 
-	return snprintf(buf, PAGE_SIZE, "%p\n", ofbi->region->vaddr);
+	return sysfs_emit(buf, "%p\n", ofbi->region->vaddr);
 }
 
 static ssize_t show_upd_mode(struct device *dev,
···
 	if (r)
 		return r;
 
-	return snprintf(buf, PAGE_SIZE, "%u\n", (unsigned)mode);
+	return sysfs_emit(buf, "%u\n", (unsigned int)mode);
 }
 
 static ssize_t store_upd_mode(struct device *dev, struct device_attribute *attr,