target/linux/generic/backport-6.1/715-05-v6.2-phylink-require-valid-state-argument-to-phylink_vali.patch

   1 From 2bf7e4a68c42eed909f3c29582e1fb85cb157e35 Mon Sep 17 00:00:00 2001
   2 From: Jakub Kicinski <kuba@kernel.org>
   3 Date: Tue, 25 Oct 2022 11:51:26 -0700
   4 Subject: [PATCH 05/21] phylink: require valid state argument to
   5  phylink_validate_mask_caps()
   6
   7 state is deferenced earlier in the function, the NULL check
   8 is pointless. Since we don't have any crash reports presumably
   9 it's safe to assume state is not NULL.
  10
  11 Fixes: f392a1846489 ("net: phylink: provide phylink_validate_mask_caps() helper")
  12 Reviewed-by: Sean Anderson <sean.anderson@seco.com>
  13 Link: https://lore.kernel.org/r/20221025185126.1720553-1-kuba@kernel.org
  14 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
  15 ---
  16  drivers/net/phy/phylink.c | 5 ++---
  17  1 file changed, 2 insertions(+), 3 deletions(-)
  18
  19 --- a/drivers/net/phy/phylink.c
  20 +++ b/drivers/net/phy/phylink.c
  21 @@ -566,7 +566,7 @@ EXPORT_SYMBOL_GPL(phylink_get_capabiliti
  22  /**
  23   * phylink_validate_mask_caps() - Restrict link modes based on caps
  24   * @supported: ethtool bitmask for supported link modes.
  25 - * @state: an (optional) pointer to a &struct phylink_link_state.
  26 + * @state: pointer to a &struct phylink_link_state.
  27   * @mac_capabilities: bitmask of MAC capabilities
  28   *
  29   * Calculate the supported link modes based on @mac_capabilities, and restrict
  30 @@ -587,8 +587,7 @@ void phylink_validate_mask_caps(unsigned
  31         phylink_caps_to_linkmodes(mask, caps);
  32
  33         linkmode_and(supported, supported, mask);
  34 -       if (state)
  35 -               linkmode_and(state->advertising, state->advertising, mask);
  36 +       linkmode_and(state->advertising, state->advertising, mask);
  37  }
  38  EXPORT_SYMBOL_GPL(phylink_validate_mask_caps);
  39