This patch is based on the latest net-next.git / next branch. After applied this patch with the following patches, the system can enter/exit Suspend to Idle without any error: https://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git/commit/?h=next&id=aa4c0bbf820ddb9dd8105a403aa12df57b9e5129 https://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy.git/commit/?h=next&id=1a5361189b7acac15b9b086b2300a11b7aa84c06 Changes from v2: https://lore.kernel.org/all/20231013121936.364678-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on the latest net-next.git / main branch. - Change the subject in the patch 1/2. - Fix a condition to avoid endless loop in the patch 1/2. Changes from v1: https://lore.kernel.org/all/20231012121618.267315-1-yoshihiro.shimoda.uh@xxxxxxxxxxx/ - Based on the latest net-next.git / main branch. So, the following patches are already merged. https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=510b18cf23b9bd8a982ef7f1fb19f3968a2bf787 https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=053f13f67be6d02781730c9ac71abde6e9140610 - Add a new patch to use unsigned int for array index in the patch 1/2. - Use unsigned int for array index in the patch 2/2. - Use DEFINE_SIMPLE_DEV_PM_OPS() and drop __maybe_unused tags in the patch 2/2. - Use pm_sleep_ptr() in the patch 2/2. Yoshihiro Shimoda (2): rswitch: Use unsigned int for port related array index rswitch: Add PM ops drivers/net/ethernet/renesas/rswitch.c | 53 ++++++++++++++++++++++++-- drivers/net/ethernet/renesas/rswitch.h | 2 +- 2 files changed, 50 insertions(+), 5 deletions(-) -- 2.25.1