Bug#508527: [PATCH] via-velocity: Give RX descriptors to the NIC later on open or MTU change
David Miller wrote:
>> velocity_open() calls velocity_give_many_rx_descs(), which gives RX
>> descriptors to the NIC, before installing an interrupt handler or
>> calling velocity_init_registers(). I think this is very unsafe and it
>> appears to explain the bug report <http://bugs.debian.org/508527>.
>> On MTU change, velocity_give_many_rx_descs() is again called before
>> velocity_init_registers(). I'm not sure whether this is unsafe but
>> it does look wrong.
>> Therefore, move the calls to velocity_give_many_rx_descs() after
>> request_irq() and velocity_init_registers().
>> Signed-off-by: Ben Hutchings <firstname.lastname@example.org>
>> This is untested; I don't have this hardware.
> Although this patch looks fine to me, I don't want to apply
> it until someone tests it.
I have successfully booted a 18.104.22.168 kernel with this patch applied on top on a PXE-booting machine with nfsroot. If you consider that to be a sufficient test then please feel free to add my
Tested-by: Jan Ceuleers <email@example.com>
Otherwise, please let me know which other tests you would like me to carry out.
Note though that I am unable to reproduce the original bug on my system.