| commit | 4398f9c817028b3b654923b3b614ea174cbc2c67 | |
| author | Ben Hutchings <ben.hutchings@codethink.co.uk> | |
| Thu, 26 Feb 2015 20:35:05 +0000 (26 20:35 +0000) | ||
| committer | David S. Miller <davem@davemloft.net> | |
| Wed, 4 Mar 2015 20:40:54 +0000 (4 15:40 -0500) | ||
| tree | 9d96b086dfaacd00f69528cfa57d54acdf01cf2b | treesnapshot (tar.gz zip) |
| parent | e5fd13f476025f416583149313da85f8a3164414 | commitdiff |
sh_eth: Mitigate lost statistics updates
The statistics registers have write-clear behaviour, which means we
will lose any increment between the read and write. Mitigate this by
only clearing when we read a non-zero value, so we will never falsely
report a total of zero. This also saves time as we only handle
error statistics here and they won't often be incremented.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
The statistics registers have write-clear behaviour, which means we
will lose any increment between the read and write. Mitigate this by
only clearing when we read a non-zero value, so we will never falsely
report a total of zero. This also saves time as we only handle
error statistics here and they won't often be incremented.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
| drivers/net/ethernet/renesas/sh_eth.c | diffblobblamehistory |