Petr Štetiar f521ef5ff3 ipq40xx: 5.4: fix of_get_mac_address obsolete usage OOPs ... of_get_mac_address returns valid pointer or ERR_PTR since 5.2 via commit d01f449c008a ("of_net: add NVMEM support to of_get_mac_address") so the patch fixes following OOPs on nbg6617: Unable to handle kernel paging request at virtual address ffffffed CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.4.24 #0 PC is at edma_axi_probe+0x444/0x1114 LR is at bus_find_device+0x88/0x9c Where the PC can be resolved to: >>> l *edma_axi_probe+0x444 0xc067be5c is in edma_axi_probe (./include/linux/string.h:378). >>> l *edma_axi_probe+0x43f 0xc067be57 is in edma_axi_probe (drivers/net/ethernet/qualcomm/essedma/edma_axi.c:936) Which leads to the following code fragment: 935 mac_addr = of_get_mac_address(pnp); 936 if (mac_addr) 937 memcpy(edma_netdev[idx_mac]->dev_addr, mac_addr, ETH_ALEN); Where using mac_addr=0xffffffed (-ENODEV) as source address in memcpy() is causing the OOPs. Acked-by: John Crispin <john@phrozen.org> Signed-off-by: Petr Štetiar <ynezz@true.cz>		2020-03-16 22:21:45 +01:00
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net/ethernet/qualcomm/essedma	ipq40xx: 5.4: fix of_get_mac_address obsolete usage OOPs	2020-03-16 22:21:45 +01:00