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When marking a switch port as disabled in the device tree, by using 'status = "disabled";', the switch driver fails on boot, causing a restart: CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 802c3064, ra == 8022b4b4 [ ... ] Call Trace: [<802c3064>] strlen+0x0/0x2c [<8022b4b4>] start_creating.part.0+0x78/0x194 [<8022bd3c>] debugfs_create_dir+0x44/0x1c0 [<80396dfc>] rtl838x_dbgfs_port_init+0x54/0x258 [<80397508>] rtl838x_dbgfs_init+0xe0/0x56c This is caused by the DSA subsystem (mostly) ignoring the port, while rtl83xx_mdio_probe() still extracts some details on this disabled port from the device tree, resulting in the usage of a NULL pointer where a port name is expected. By not probing ignoring disabled ports, no attempt is made to create a debugfs directory later. The device then boots as expected without the disabled port. Signed-off-by: Sander Vanheule <sander@svanheule.net> |
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arch/mips | ||
drivers | ||
include/dt-bindings/clock |