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Marco Bonelli authored
Fix the implementation of ethtool_convert_link_mode_to_legacy_u32(), which is supposed to return false if src has bits higher than 31 set. The current implementation uses the complement of bitmap_fill(ext, 32) to test high bits of src, which is wrong as bitmap_fill() fills _with long granularity_, and sizeof(long) can be > 4. No users of this function currently check the return value, so the bug was dormant. Also remove the check for __ETHTOOL_LINK_MODE_MASK_NBITS > 32, as the enum ethtool_link_mode_bit_indices contains far beyond 32 values. Using find_next_bit() to test the src bitmask works regardless of this anyway. Signed-off-by:
Marco Bonelli <marco@mebeim.net> Link: https://lore.kernel.org/r/20220609134900.11201-1-marco@mebeim.netSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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