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authorDavid Decotigny <decot@google.com>2011-04-27 22:32:38 +0400
committerDavid S. Miller <davem@davemloft.net>2011-04-30 01:01:30 +0400
commit8ae6daca85c8bbd6a32c382db5e2a2a989f8bed2 (patch)
tree0c85476c2af6568c3d3a73a960d582d2f91a1256 /drivers/net/mdio.c
parent36504605432996590f889e33d47e2d9c581f7569 (diff)
downloadlinux-8ae6daca85c8bbd6a32c382db5e2a2a989f8bed2.tar.xz
ethtool: Call ethtool's get/set_settings callbacks with cleaned data
This makes sure that when a driver calls the ethtool's get/set_settings() callback of another driver, the data passed to it is clean. This guarantees that speed_hi will be zeroed correctly if the called callback doesn't explicitely set it: we are sure we don't get a corrupted speed from the underlying driver. We also take care of setting the cmd field appropriately (ETHTOOL_GSET/SSET). This applies to dev_ethtool_get_settings(), which now makes sure it sets up that ethtool command parameter correctly before passing it to drivers. This also means that whoever calls dev_ethtool_get_settings() does not have to clean the ethtool command parameter. This function also becomes an exported symbol instead of an inline. All drivers visible to make allyesconfig under x86_64 have been updated. Signed-off-by: David Decotigny <decot@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/mdio.c')
-rw-r--r--drivers/net/mdio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/mdio.c b/drivers/net/mdio.c
index e85bf04cf813..f2d10abd0403 100644
--- a/drivers/net/mdio.c
+++ b/drivers/net/mdio.c
@@ -176,6 +176,9 @@ static u32 mdio45_get_an(const struct mdio_if_info *mdio, u16 addr)
* @npage_adv: Modes currently advertised on next pages
* @npage_lpa: Modes advertised by link partner on next pages
*
+ * The @ecmd parameter is expected to have been cleared before calling
+ * mdio45_ethtool_gset_npage().
+ *
* Since the CSRs for auto-negotiation using next pages are not fully
* standardised, this function does not attempt to decode them. The
* caller must pass them in.