92 static bool valid_pos(loff_t pos, size_t count)  in valid_pos()  argument
94 	if (pos < 0 || (long) pos != pos || (ssize_t) count < 0)  in valid_pos()
96 	if ((unsigned long) pos + (unsigned long) count < (unsigned long) pos)  in valid_pos()
152 	loff_t pos;  in snd_info_entry_read()  local
154 	pos = *offset;  in snd_info_entry_read()
155 	if (!valid_pos(pos, count))  in snd_info_entry_read()
157 	if (pos >= entry->size)  in snd_info_entry_read()
159 	size = entry->size - pos;  in snd_info_entry_read()
162 				  file, buffer, size, pos);  in snd_info_entry_read()
164 		*offset = pos + size;  in snd_info_entry_read()
174 	loff_t pos;  in snd_info_entry_write()  local
176 	pos = *offset;  in snd_info_entry_write()
177 	if (!valid_pos(pos, count))  in snd_info_entry_write()
180 		size_t maxsize = entry->size - pos;  in snd_info_entry_write()
183 					   file, buffer, count, pos);  in snd_info_entry_write()
186 		*offset = pos + size;  in snd_info_entry_write()
307 	loff_t pos;  in snd_info_text_entry_write()  local
313 	pos = *offset;  in snd_info_text_entry_write()
314 	if (!valid_pos(pos, count))  in snd_info_text_entry_write()
316 	next = pos + count;  in snd_info_text_entry_write()
339 	if (copy_from_user(buf->buffer + pos, buffer, count)) {  in snd_info_text_entry_write()