usb: typec: Use sysfs_emit_at when concatenating the string

commit 609fded upstream.

The buffer address used in sysfs_emit should be aligned to PAGE_SIZE.
Use sysfs_emit_at instead to offset the buffer.

Fixes: a7cff92 ("usb: typec: USB Power Delivery helpers for ports and partners")
Cc: stable@vger.kernel.org
Signed-off-by: Kyle Tso <kyletso@google.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230623151036.3955013-4-kyletso@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/usb/typec/class.c

@@ -1269,9 +1269,9 @@ static ssize_t select_usb_power_delivery_show(struct device *dev,
 
 	for (i = 0; pds[i]; i++) {
 		if (pds[i] == port->pd)
-			ret += sysfs_emit(buf + ret, "[%s] ", dev_name(&pds[i]->dev));
+			ret += sysfs_emit_at(buf, ret, "[%s] ", dev_name(&pds[i]->dev));
 		else
-			ret += sysfs_emit(buf + ret, "%s ", dev_name(&pds[i]->dev));
+			ret += sysfs_emit_at(buf, ret, "%s ", dev_name(&pds[i]->dev));
 	}
 
 	buf[ret - 1] = '\n';