MIPS: Octeon: Fix DT pruning bug with pip ports
authorFaidon Liambotis <paravoid@debian.org>
Thu, 11 Jul 2013 21:08:09 +0000 (21:08 +0000)
committerRalf Baechle <ralf@linux-mips.org>
Fri, 19 Jul 2013 09:04:54 +0000 (11:04 +0200)
During the pruning of the device tree octeon_fdt_pip_iface() is called
for each PIP interface and every port up to the port count is removed
from the device tree. However, the count was set to the return value of
cvmx_helper_interface_enumerate() which doesn't actually return the
count but just returns zero on success. This effectively removed *all*
ports from the tree.

Use cvmx_helper_ports_on_interface() instead to fix this. This
successfully restores the 3 ports of my ERLite-3 and fixes the "kernel
assigns random MAC addresses" issue.

Signed-off-by: Faidon Liambotis <paravoid@debian.org>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5587/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/cavium-octeon/octeon-platform.c

index 7b746e7..1830874 100644 (file)
@@ -334,9 +334,10 @@ static void __init octeon_fdt_pip_iface(int pip, int idx, u64 *pmac)
        char name_buffer[20];
        int iface;
        int p;
-       int count;
+       int count = 0;
 
-       count = cvmx_helper_interface_enumerate(idx);
+       if (cvmx_helper_interface_enumerate(idx) == 0)
+               count = cvmx_helper_ports_on_interface(idx);
 
        snprintf(name_buffer, sizeof(name_buffer), "interface@%d", idx);
        iface = fdt_subnode_offset(initial_boot_params, pip, name_buffer);