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net: rswitch: Initialize RX DMA descriptor .die_dt field to DT_FEMPTY

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Empty RX DMA descriptor must contain .die_dt field set to DT_FEMPTY,
because hardware DMA overwrites this field to non-DT_FEMPTY when data
are received, and the .recv callback tests the content of RX descriptor
.die_dt field to determine whether hardware did receive any data and
updated the .die_dt field, and based on that information, receives a
packet or not. Fix the incorrect RX DMA descriptor initialization to
assure the .recv callback always works correctly.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
This commit is contained in:
Marek Vasut
2025-10-27 17:45:33 +01:00
parent 482606d18c
commit e9e597bc73
1 changed files with 1 additions and 1 deletions
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2
drivers/net/rswitch.c
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@@ -601,7 +601,7 @@ static void rswitch_rx_desc_init(struct rswitch_port_priv *priv)
priv->rx_desc_index = 0;
for (i = 0; i < RSWITCH_NUM_RX_DESC; i++) {
priv->rx_desc[i].data.die_dt = DT_EEMPTY;
priv->rx_desc[i].data.die_dt = DT_FEMPTY;
priv->rx_desc[i].data.info_ds = PKTSIZE_ALIGN;
packet_addr = (uintptr_t)priv->rx_desc[i].packet;
priv->rx_desc[i].data.dptrl = lower_32_bits(packet_addr);