From: Guenter Roeck Date: Fri, 31 Oct 2014 03:50:15 +0000 (-0700) Subject: net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0 X-Git-Tag: omap-for-v3.19/fixes-not-urgent-part1~25^2~3 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e0fb6fb6d52686134b2ece144060219591d4f8d3;p=pandora-kernel.git net: ethtool: Return -EOPNOTSUPP if user space tries to read EEPROM with lengh 0 If a driver supports reading EEPROM but no EEPROM is installed in the system, the driver's get_eeprom_len function returns 0. ethtool will subsequently try to read that zero-length EEPROM anyway. If the driver does not support EEPROM access at all, this operation will return -EOPNOTSUPP. If the driver does support EEPROM access but no EEPROM is installed, the operation will return -EINVAL. Return -EOPNOTSUPP in both cases for consistency. Signed-off-by: Guenter Roeck Tested-by: Andrew Lunn Signed-off-by: David S. Miller --- Reading git-diff-tree failed