staging: udlfb: remove metrics_misc sysfs attribute

Remove metrics_misc sysfs attribute

Previously returned multiple values, which goes against sysfs guidelines.
Had been used for debugging to figure out which of the multiple
fbdev interfaces an app was using, but log file messages are sufficient.
Signed-off-by: Bernie Thompson <bernie@plugable.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/udlfb/udlfb.c

@@ -661,7 +661,6 @@ static void dlfb_ops_copyarea(struct fb_info *info,
 	dlfb_handle_damage(dev, area->dx, area->dy,
 			area->width, area->height, info->screen_base);
 #endif
-	atomic_inc(&dev->copy_count);
 
 }
 
@@ -679,7 +678,6 @@ static void dlfb_ops_imageblit(struct fb_info *info,
 
 #endif
 
-	atomic_inc(&dev->blit_count);
 }
 
 static void dlfb_ops_fillrect(struct fb_info *info,
@@ -695,8 +693,6 @@ static void dlfb_ops_fillrect(struct fb_info *info,
 			      rect->height, info->screen_base);
 #endif
 
-	atomic_inc(&dev->fill_count);
-
 }
 
 static void dlfb_get_edid(struct dlfb_data *dev)
@@ -754,7 +750,6 @@ static int dlfb_ops_ioctl(struct fb_info *info, unsigned int cmd,
 
 		dlfb_handle_damage(dev, area->x, area->y, area->w, area->h,
 			   info->screen_base);
-		atomic_inc(&dev->damage_count);
 	}
 
 	return 0;
@@ -1088,29 +1083,6 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
 			atomic_read(&dev->cpu_kcycles_used));
 }
 
-static ssize_t metrics_misc_show(struct device *fbdev,
-				   struct device_attribute *a, char *buf) {
-	struct fb_info *fb_info = dev_get_drvdata(fbdev);
-	struct dlfb_data *dev = fb_info->par;
-	return snprintf(buf, PAGE_SIZE,
-			"Calls to\ndamage: %u\nblit: %u\n"
-			"defio faults: %u\ncopy: %u\n"
-			"fill: %u\n\n"
-			"active framebuffer clients: %d\n"
-			"urbs available %d(%d)\n"
-			"Shadow framebuffer in use? %s\n"
-			"Any lost pixels? %s\n",
-			atomic_read(&dev->damage_count),
-			atomic_read(&dev->blit_count),
-			atomic_read(&dev->defio_fault_count),
-			atomic_read(&dev->copy_count),
-			atomic_read(&dev->fill_count),
-			dev->fb_count,
-			dev->urbs.available, dev->urbs.limit_sem.count,
-			(dev->backing_buffer) ? "yes" : "no",
-			atomic_read(&dev->lost_pixels) ? "yes" : "no");
-}
-
 static ssize_t edid_show(struct file *filp, struct kobject *kobj,
 			 struct bin_attribute *a,
 			 char *buf, loff_t off, size_t count) {
@@ -1145,11 +1117,6 @@ static ssize_t metrics_reset_store(struct device *fbdev,
 	atomic_set(&dev->bytes_identical, 0);
 	atomic_set(&dev->bytes_sent, 0);
 	atomic_set(&dev->cpu_kcycles_used, 0);
-	atomic_set(&dev->blit_count, 0);
-	atomic_set(&dev->copy_count, 0);
-	atomic_set(&dev->fill_count, 0);
-	atomic_set(&dev->defio_fault_count, 0);
-	atomic_set(&dev->damage_count, 0);
 
 	return count;
 }
@@ -1190,7 +1157,6 @@ static struct device_attribute fb_device_attrs[] = {
 	__ATTR_RO(metrics_bytes_identical),
 	__ATTR_RO(metrics_bytes_sent),
 	__ATTR_RO(metrics_cpu_kcycles_used),
-	__ATTR_RO(metrics_misc),
 	__ATTR(metrics_reset, S_IWUGO, NULL, metrics_reset_store),
 	__ATTR_RW(use_defio),
 };
@@ -1208,7 +1174,6 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
 	int bytes_sent = 0;
 	int bytes_identical = 0;
 	int bytes_rendered = 0;
-	int fault_count = 0;
 
 	if (!atomic_read(&dev->use_defio))
 		return;
@@ -1229,7 +1194,6 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
 				  &cmd, cur->index << PAGE_SHIFT,
 				  PAGE_SIZE, &bytes_identical, &bytes_sent);
 		bytes_rendered += PAGE_SIZE;
-		fault_count++;
 	}
 
 	if (cmd > (char *) urb->transfer_buffer) {
@@ -1240,7 +1204,6 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
 	} else
 		dlfb_urb_completion(urb);
 
-	atomic_add(fault_count, &dev->defio_fault_count);
 	atomic_add(bytes_sent, &dev->bytes_sent);
 	atomic_add(bytes_identical, &dev->bytes_identical);
 	atomic_add(bytes_rendered, &dev->bytes_rendered);

drivers/staging/udlfb/udlfb.h

@@ -54,12 +54,6 @@ struct dlfb_data {
 	atomic_t bytes_identical; /* saved effort with backbuffer comparison */
 	atomic_t bytes_sent; /* to usb, after compression including overhead */
 	atomic_t cpu_kcycles_used; /* transpired during pixel processing */
-	/* interface usage metrics. Clients can call driver via several */
-	atomic_t blit_count;
-	atomic_t copy_count;
-	atomic_t fill_count;
-	atomic_t damage_count;
-	atomic_t defio_fault_count;
 };
 
 #define NR_USB_REQUEST_I2C_SUB_IO 0x02