add ax88772C AX88772C_eeprom_tools

hc

2024-05-10 61598093bbdd283a7edc367d900f223070ead8d2

 kernel/net/atm/resources.c
..
..
@@ -193,92 +193,48 @@
193
193
 	return error ? -EFAULT : 0;
194
194
 }
195
195
 
196
-int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat)
196
+int atm_getnames(void __user *buf, int __user *iobuf_len)
197
197
 {
198
-	void __user *buf;
199
-	int error, len, number, size = 0;
198
+	int error, len, size = 0;
200
199
 	struct atm_dev *dev;
201
200
 	struct list_head *p;
202
201
 	int *tmp_buf, *tmp_p;
203
-	int __user *sioc_len;
204
-	int __user *iobuf_len;
205
202
 
206
-#ifndef CONFIG_COMPAT
207
-	compat = 0; /* Just so the compiler _knows_ */
208
-#endif
209
-
210
-	switch (cmd) {
211
-	case ATM_GETNAMES:
212
-		if (compat) {
213
-#ifdef CONFIG_COMPAT
214
-			struct compat_atm_iobuf __user *ciobuf = arg;
215
-			compat_uptr_t cbuf;
216
-			iobuf_len = &ciobuf->length;
217
-			if (get_user(cbuf, &ciobuf->buffer))
218
-				return -EFAULT;
219
-			buf = compat_ptr(cbuf);
220
-#endif
221
-		} else {
222
-			struct atm_iobuf __user *iobuf = arg;
223
-			iobuf_len = &iobuf->length;
224
-			if (get_user(buf, &iobuf->buffer))
225
-				return -EFAULT;
226
-		}
227
-		if (get_user(len, iobuf_len))
228
-			return -EFAULT;
229
-		mutex_lock(&atm_dev_mutex);
230
-		list_for_each(p, &atm_devs)
231
-			size += sizeof(int);
232
-		if (size > len) {
233
-			mutex_unlock(&atm_dev_mutex);
234
-			return -E2BIG;
235
-		}
236
-		tmp_buf = kmalloc(size, GFP_ATOMIC);
237
-		if (!tmp_buf) {
238
-			mutex_unlock(&atm_dev_mutex);
239
-			return -ENOMEM;
240
-		}
241
-		tmp_p = tmp_buf;
242
-		list_for_each(p, &atm_devs) {
243
-			dev = list_entry(p, struct atm_dev, dev_list);
244
-			*tmp_p++ = dev->number;
245
-		}
203
+	if (get_user(len, iobuf_len))
204
+		return -EFAULT;
205
+	mutex_lock(&atm_dev_mutex);
206
+	list_for_each(p, &atm_devs)
207
+		size += sizeof(int);
208
+	if (size > len) {
246
209
 		mutex_unlock(&atm_dev_mutex);
247
-		error = ((copy_to_user(buf, tmp_buf, size)) ||
248
-			 put_user(size, iobuf_len))
249
-			? -EFAULT : 0;
250
-		kfree(tmp_buf);
251
-		return error;
252
-	default:
253
-		break;
210
+		return -E2BIG;
254
211
 	}
255
-
256
-	if (compat) {
257
-#ifdef CONFIG_COMPAT
258
-		struct compat_atmif_sioc __user *csioc = arg;
259
-		compat_uptr_t carg;
260
-
261
-		sioc_len = &csioc->length;
262
-		if (get_user(carg, &csioc->arg))
263
-			return -EFAULT;
264
-		buf = compat_ptr(carg);
265
-
266
-		if (get_user(len, &csioc->length))
267
-			return -EFAULT;
268
-		if (get_user(number, &csioc->number))
269
-			return -EFAULT;
270
-#endif
271
-	} else {
272
-		struct atmif_sioc __user *sioc = arg;
273
-
274
-		sioc_len = &sioc->length;
275
-		if (get_user(buf, &sioc->arg))
276
-			return -EFAULT;
277
-		if (get_user(len, &sioc->length))
278
-			return -EFAULT;
279
-		if (get_user(number, &sioc->number))
280
-			return -EFAULT;
212
+	tmp_buf = kmalloc(size, GFP_ATOMIC);
213
+	if (!tmp_buf) {
214
+		mutex_unlock(&atm_dev_mutex);
215
+		return -ENOMEM;
281
216
 	}
217
+	tmp_p = tmp_buf;
218
+	list_for_each(p, &atm_devs) {
219
+		dev = list_entry(p, struct atm_dev, dev_list);
220
+		*tmp_p++ = dev->number;
221
+	}
222
+	mutex_unlock(&atm_dev_mutex);
223
+	error = ((copy_to_user(buf, tmp_buf, size)) ||
224
+		 put_user(size, iobuf_len))
225
+		? -EFAULT : 0;
226
+	kfree(tmp_buf);
227
+	return error;
228
+}
229
+
230
+int atm_dev_ioctl(unsigned int cmd, void __user *buf, int __user *sioc_len,
231
+		  int number, int compat)
232
+{
233
+	int error, len, size = 0;
234
+	struct atm_dev *dev;
235
+
236
+	if (get_user(len, sioc_len))
237
+		return -EFAULT;
282
238
 
283
239
 	dev = try_then_request_module(atm_dev_lookup(number), "atm-device-%d",
284
240
 				      number);
..
..
@@ -310,7 +266,7 @@
310
266
 				goto done;
311
267
 			}
312
268
 	}
313
-	/* fall through */
269
+		fallthrough;
314
270
 	case ATM_SETESIF:
315
271
 	{
316
272
 		unsigned char esi[ESI_LEN];
..
..
@@ -332,7 +288,7 @@
332
288
 			error = -EPERM;
333
289
 			goto done;
334
290
 		}
335
-		/* fall through */
291
+		fallthrough;
336
292
 	case ATM_GETSTAT:
337
293
 		size = sizeof(struct atm_dev_stats);
338
294
 		error = fetch_stats(dev, buf, cmd == ATM_GETSTATZ);
..
..
@@ -405,7 +361,7 @@
405
361
 			error = -EINVAL;
406
362
 			goto done;
407
363
 		}
408
-		/* fall through */
364
+		fallthrough;
409
365
 	case ATM_SETCIRANGE:
410
366
 	case SONET_GETSTATZ:
411
367
 	case SONET_SETDIAG:
..
..
@@ -415,9 +371,9 @@
415
371
 			error = -EPERM;
416
372
 			goto done;
417
373
 		}
418
-		/* fall through */
374
+		fallthrough;
419
375
 	default:
420
-		if (compat) {
376
+		if (IS_ENABLED(CONFIG_COMPAT) && compat) {
421
377
 #ifdef CONFIG_COMPAT
422
378
 			if (!dev->ops->compat_ioctl) {
423
379
 				error = -EINVAL;
..
..
@@ -447,6 +403,7 @@
447
403
 	return error;
448
404
 }
449
405
 
406
+#ifdef CONFIG_PROC_FS
450
407
 void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos)
451
408
 {
452
409
 	mutex_lock(&atm_dev_mutex);
..
..
@@ -462,3 +419,4 @@
462
419
 {
463
420
 	return seq_list_next(v, &atm_devs, pos);
464
421
 }
422
+#endif