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Commit da120112 authored by Nicolas Ferre's avatar Nicolas Ferre Committed by David S. Miller
Browse files

net/macb: add comment in macb_probe_queues 



As we access the MID register directly, we need to tell why
we don't use the macb_is_gem() dedicated function.

Signed-off-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bfa0914a

drivers/net/ethernet/cadence/macb.c

+6 −2
Original line number Diff line number Diff line
@@ -2161,9 +2161,13 @@ static void macb_probe_queues(void __iomem *mem, 
	*queue_mask = 0x1;

	*num_queues = 1;



	/* is it macb or gem ? */

	/* is it macb or gem ?

	 *

	 * We need to read directly from the hardware here because

	 * we are early in the probe process and don't have the

	 * MACB_CAPS_MACB_IS_GEM flag positioned

	 */

	mid = readl_relaxed(mem + MACB_MID);



	if (MACB_BFEXT(IDNUM, mid) < 0x2)

		return;