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net: fec_mxc: Skip recv packet process when fec is halted

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After FEC is halted by calling fec_halt callback, we should not continue
receiving packet. Otherwise it will process previous pending interrupts
on EIR register and uses wrong rbd index as this has been reset to 0.

The GRA interrupt which is triggered by issuing graceful stop command to
FEC transmitter in fec_halt is processed in this case. It causes wrong
receive buffer descriptors be used by FEC in next time.

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li
2024-09-24 15:32:00 +08:00
committed by Fabio Estevam
parent 94d02f13db
commit 99abeaa648
1 changed files with 3 additions and 0 deletions
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3
drivers/net/fec_mxc.c
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@@ -818,6 +818,9 @@ static int fecmxc_recv(struct udevice *dev, int flags, uchar **packetp)
return -ENOMEM;
}
if (!(readl(&fec->eth->ecntrl) & FEC_ECNTRL_ETHER_EN))
return 0;
/* Check if any critical events have happened */
ievent = readl(&fec->eth->ievent);
writel(ievent, &fec->eth->ievent);