108 static bool valid_pos(loff_t pos, size_t count)  in valid_pos()  argument
110 	if (pos < 0 || (long) pos != pos || (ssize_t) count < 0)  in valid_pos()
112 	if ((unsigned long) pos + (unsigned long) count < (unsigned long) pos)  in valid_pos()
168 	loff_t pos;  in snd_info_entry_read()  local
170 	pos = *offset;  in snd_info_entry_read()
171 	if (!valid_pos(pos, count))  in snd_info_entry_read()
173 	if (pos >= entry->size)  in snd_info_entry_read()
175 	size = entry->size - pos;  in snd_info_entry_read()
178 				  file, buffer, size, pos);  in snd_info_entry_read()
180 		*offset = pos + size;  in snd_info_entry_read()
190 	loff_t pos;  in snd_info_entry_write()  local
192 	pos = *offset;  in snd_info_entry_write()
193 	if (!valid_pos(pos, count))  in snd_info_entry_write()
196 		size_t maxsize = entry->size - pos;  in snd_info_entry_write()
199 					   file, buffer, count, pos);  in snd_info_entry_write()
202 		*offset = pos + size;  in snd_info_entry_write()
324 	loff_t pos;  in snd_info_text_entry_write()  local
330 	pos = *offset;  in snd_info_text_entry_write()
331 	if (!valid_pos(pos, count))  in snd_info_text_entry_write()
333 	next = pos + count;  in snd_info_text_entry_write()
356 	if (copy_from_user(buf->buffer + pos, buffer, count)) {  in snd_info_text_entry_write()