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| /openbmc/linux/drivers/net/ethernet/broadcom/ |
| H A D | bgmac.c | diff e7731194fdf085f46d58b1adccfddbd0dfee4873 Fri Jul 07 01:53:25 CDT 2023 Rafał Miłecki <rafal@milecki.pl> net: bgmac: postpone turning IRQs off to avoid SoC hangs
Turning IRQs off is done by accessing Ethernet controller registers.
That can't be done until device's clock is enabled. It results in a SoC
hang otherwise.
This bug remained unnoticed for years as most bootloaders keep all
Ethernet interfaces turned on. It seems to only affect a niche SoC
family BCM47189. It has two Ethernet controllers but CFE bootloader uses
only the first one.
Fixes: 34322615cbaa ("net: bgmac: Mask interrupts during probe")
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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