Thread (24 messages) 24 messages, 6 authors, 2016-06-22

Re: [PATCH 04/15] drivers: net: cpsw: ethtool: fix accessing to suspended device

From: Grygorii Strashko <grygorii.strashko@ti.com>
Date: 2016-06-15 16:45:12
Also in: linux-devicetree, linux-omap, lkml

On 06/15/2016 07:14 PM, Florian Fainelli wrote:
On 06/15/2016 04:55 AM, Grygorii Strashko wrote:
quoted
The CPSW might be suspended by RPM if all ethX interfaces are down,
but it still could be accesible through ethtool interfce. In this case
ethtool operations, requiring registers access, will cause L3 errors and
CPSW crash.

Hence, fix it by adding RPM get/put calls in ethtool callbcaks which
can access CPSW registers: .set_coalesce(), .get_ethtool_stats(),
.set_pauseparam(), .get_regs()
Provided that you implement an ethtool_ops::begin, it will be called
before each ethtool operation runs, so that could allow you to eliminate
some of the duplication here. Conversely ethtool_ops::end terminates
each operation and can be used for that purpose.
Ah. Thanks for the advice. (assume you've meant .complete())



-- 
regards,
-grygorii
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help