* [frank-w-bpi-r2-4.14:7.2-main 214/214] include/linux/pcs/pcs.h:90:1: warning: 'fwnode_phylink_pcs_get_from_fwnode' defined but not used
@ 2026-09-25 19:37 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-09-25 19:37 UTC (permalink / raw)
To: Frank Wunderlich; +Cc: oe-kbuild-all
tree: https://github.com/frank-w/BPI-R2-4.14 7.2-main
head: 27e8d41a42f73cb2b271df0e897e25224889f6d0
commit: ac31c86a941e02ff8f91a2f7b5e171352ccf9b03 [214/214] net: ethernet: mtk_eth_soc: add paths and SerDes modes for MT7988
config: s390-randconfig-2000-20260925 (https://download.01.org/0day-ci/archive/20260925/202609251947.lSPsuH0V-lkp@intel.com/config)
compiler: s390-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260925/202609251947.lSPsuH0V-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609251947.lSPsuH0V-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/ethernet/mediatek/mtk_eth_soc.c:25:
>> include/linux/pcs/pcs.h:90:1: warning: 'fwnode_phylink_pcs_get_from_fwnode' defined but not used [-Wunused-function]
fwnode_phylink_pcs_get_from_fwnode(struct fwnode_handle *fwnode,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> include/linux/pcs/pcs.h:78:12: warning: 'register_fwnode_pcs_notifier' defined but not used [-Wunused-function]
static int register_fwnode_pcs_notifier(struct notifier_block *nb)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/fwnode_phylink_pcs_get_from_fwnode +90 include/linux/pcs/pcs.h
dc0306cecdd553 Christian Marangi 2025-04-06 24
69a44cff9e793a Christian Marangi 2025-03-17 25 /**
69a44cff9e793a Christian Marangi 2025-03-17 26 * fwnode_pcs_get - Retrieves a PCS from a firmware node
69a44cff9e793a Christian Marangi 2025-03-17 27 * @fwnode: firmware node
69a44cff9e793a Christian Marangi 2025-03-17 28 * @index: index fwnode PCS handle in firmware node
69a44cff9e793a Christian Marangi 2025-03-17 29 *
69a44cff9e793a Christian Marangi 2025-03-17 30 * Get a PCS from the firmware node at index.
69a44cff9e793a Christian Marangi 2025-03-17 31 *
69a44cff9e793a Christian Marangi 2025-03-17 32 * Returns a pointer to the phylink_pcs or a negative
69a44cff9e793a Christian Marangi 2025-03-17 33 * error pointer. Can return -EPROBE_DEFER if the PCS is not
69a44cff9e793a Christian Marangi 2025-03-17 34 * present in global providers list (either due to driver
69a44cff9e793a Christian Marangi 2025-03-17 35 * still needs to be probed or it failed to probe/removed)
69a44cff9e793a Christian Marangi 2025-03-17 36 */
69a44cff9e793a Christian Marangi 2025-03-17 37 struct phylink_pcs *fwnode_pcs_get(struct fwnode_handle *fwnode,
69a44cff9e793a Christian Marangi 2025-03-17 38 int index);
69a44cff9e793a Christian Marangi 2025-03-17 39
dc0306cecdd553 Christian Marangi 2025-04-06 40 /**
dc0306cecdd553 Christian Marangi 2025-04-06 41 * fwnode_phylink_pcs_get_from_fwnode - Retrieves the PCS provided
dc0306cecdd553 Christian Marangi 2025-04-06 42 * by the firmware node from a
dc0306cecdd553 Christian Marangi 2025-04-06 43 * firmware node
dc0306cecdd553 Christian Marangi 2025-04-06 44 * @fwnode: firmware node
dc0306cecdd553 Christian Marangi 2025-04-06 45 * @pcs_fwnode: PCS firmware node
dc0306cecdd553 Christian Marangi 2025-04-06 46 *
dc0306cecdd553 Christian Marangi 2025-04-06 47 * Parse 'pcs-handle' in 'fwnode' and get the PCS that match
dc0306cecdd553 Christian Marangi 2025-04-06 48 * 'pcs_fwnode' firmware node.
dc0306cecdd553 Christian Marangi 2025-04-06 49 *
dc0306cecdd553 Christian Marangi 2025-04-06 50 * Returns a pointer to the phylink_pcs or a negative
dc0306cecdd553 Christian Marangi 2025-04-06 51 * error pointer. Can return -EPROBE_DEFER if the PCS is not
dc0306cecdd553 Christian Marangi 2025-04-06 52 * present in global providers list (either due to driver
dc0306cecdd553 Christian Marangi 2025-04-06 53 * still needs to be probed or it failed to probe/removed)
dc0306cecdd553 Christian Marangi 2025-04-06 54 */
dc0306cecdd553 Christian Marangi 2025-04-06 55 struct phylink_pcs *
dc0306cecdd553 Christian Marangi 2025-04-06 56 fwnode_phylink_pcs_get_from_fwnode(struct fwnode_handle *fwnode,
dc0306cecdd553 Christian Marangi 2025-04-06 57 struct fwnode_handle *pcs_fwnode);
dc0306cecdd553 Christian Marangi 2025-04-06 58
69a44cff9e793a Christian Marangi 2025-03-17 59 /**
69a44cff9e793a Christian Marangi 2025-03-17 60 * fwnode_phylink_pcs_parse - generic PCS parse for fwnode PCS provider
69a44cff9e793a Christian Marangi 2025-03-17 61 * @fwnode: firmware node
69a44cff9e793a Christian Marangi 2025-03-17 62 * @available_pcs: pointer to preallocated array of PCS
69a44cff9e793a Christian Marangi 2025-03-17 63 * @num_pcs: where to store count of parsed PCS
69a44cff9e793a Christian Marangi 2025-03-17 64 *
69a44cff9e793a Christian Marangi 2025-03-17 65 * Generic helper function to fill available_pcs array with PCS parsed
69a44cff9e793a Christian Marangi 2025-03-17 66 * from a "pcs-handle" fwnode property defined in firmware node up to
69a44cff9e793a Christian Marangi 2025-03-17 67 * passed num_pcs.
69a44cff9e793a Christian Marangi 2025-03-17 68 *
69a44cff9e793a Christian Marangi 2025-03-17 69 * If available_pcs is NULL, num_pcs is updated with the count of the
69a44cff9e793a Christian Marangi 2025-03-17 70 * parsed PCS.
69a44cff9e793a Christian Marangi 2025-03-17 71 *
69a44cff9e793a Christian Marangi 2025-03-17 72 * Returns 0 or a negative error.
69a44cff9e793a Christian Marangi 2025-03-17 73 */
69a44cff9e793a Christian Marangi 2025-03-17 74 int fwnode_phylink_pcs_parse(struct fwnode_handle *fwnode,
69a44cff9e793a Christian Marangi 2025-03-17 75 struct phylink_pcs **available_pcs,
69a44cff9e793a Christian Marangi 2025-03-17 76 unsigned int *num_pcs);
69a44cff9e793a Christian Marangi 2025-03-17 77 #else
dc0306cecdd553 Christian Marangi 2025-04-06 @78 static int register_fwnode_pcs_notifier(struct notifier_block *nb)
dc0306cecdd553 Christian Marangi 2025-04-06 79 {
dc0306cecdd553 Christian Marangi 2025-04-06 80 return -EOPNOTSUPP;
dc0306cecdd553 Christian Marangi 2025-04-06 81 }
dc0306cecdd553 Christian Marangi 2025-04-06 82
69a44cff9e793a Christian Marangi 2025-03-17 83 static inline struct phylink_pcs *fwnode_pcs_get(struct fwnode_handle *fwnode,
69a44cff9e793a Christian Marangi 2025-03-17 84 int index)
69a44cff9e793a Christian Marangi 2025-03-17 85 {
69a44cff9e793a Christian Marangi 2025-03-17 86 return ERR_PTR(-ENOENT);
69a44cff9e793a Christian Marangi 2025-03-17 87 }
69a44cff9e793a Christian Marangi 2025-03-17 88
dc0306cecdd553 Christian Marangi 2025-04-06 89 static struct phylink_pcs *
dc0306cecdd553 Christian Marangi 2025-04-06 @90 fwnode_phylink_pcs_get_from_fwnode(struct fwnode_handle *fwnode,
dc0306cecdd553 Christian Marangi 2025-04-06 91 struct fwnode_handle *pcs_fwnode)
dc0306cecdd553 Christian Marangi 2025-04-06 92 {
dc0306cecdd553 Christian Marangi 2025-04-06 93 return ERR_PTR(-ENOENT);
dc0306cecdd553 Christian Marangi 2025-04-06 94 }
dc0306cecdd553 Christian Marangi 2025-04-06 95
:::::: The code at line 90 was first introduced by commit
:::::: dc0306cecdd5530677da942149daf2b08e56f943 net: phylink: support late PCS provider attach
:::::: TO: Christian Marangi <ansuelsmth@gmail.com>
:::::: CC: Frank Wunderlich <frank-w@public-files.de>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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