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authorSinthu Raja <sinthu.raja@ti.com>2024-02-06 03:59:27 +0300
committerPaolo Abeni <pabeni@redhat.com>2024-02-08 13:32:53 +0300
commit9def04e759caa5a3d741891037ae99f81e2fff01 (patch)
tree7f9ea48385a5c24b37ac10cd1f8e098c7db19677 /drivers
parent335bac1daae3fd9070d0f9f34d7d7ba708729256 (diff)
downloadlinux-9def04e759caa5a3d741891037ae99f81e2fff01.tar.xz
net: ethernet: ti: cpsw_new: enable mac_managed_pm to fix mdio
The below commit introduced a WARN when phy state is not in the states: PHY_HALTED, PHY_READY and PHY_UP. commit 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") When cpsw_new resumes, there have port in PHY_NOLINK state, so the below warning comes out. Set mac_managed_pm be true to tell mdio that the phy resume/suspend is managed by the mac, to fix the following warning: WARNING: CPU: 0 PID: 965 at drivers/net/phy/phy_device.c:326 mdio_bus_phy_resume+0x140/0x144 CPU: 0 PID: 965 Comm: sh Tainted: G O 6.1.46-g247b2535b2 #1 Hardware name: Generic AM33XX (Flattened Device Tree) unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x24/0x2c dump_stack_lvl from __warn+0x84/0x15c __warn from warn_slowpath_fmt+0x1a8/0x1c8 warn_slowpath_fmt from mdio_bus_phy_resume+0x140/0x144 mdio_bus_phy_resume from dpm_run_callback+0x3c/0x140 dpm_run_callback from device_resume+0xb8/0x2b8 device_resume from dpm_resume+0x144/0x314 dpm_resume from dpm_resume_end+0x14/0x20 dpm_resume_end from suspend_devices_and_enter+0xd0/0x924 suspend_devices_and_enter from pm_suspend+0x2e0/0x33c pm_suspend from state_store+0x74/0xd0 state_store from kernfs_fop_write_iter+0x104/0x1ec kernfs_fop_write_iter from vfs_write+0x1b8/0x358 vfs_write from ksys_write+0x78/0xf8 ksys_write from ret_fast_syscall+0x0/0x54 Exception stack(0xe094dfa8 to 0xe094dff0) dfa0: 00000004 005c3fb8 00000001 005c3fb8 00000004 00000001 dfc0: 00000004 005c3fb8 b6f6bba0 00000004 00000004 0059edb8 00000000 00000000 dfe0: 00000004 bed918f0 b6f09bd3 b6e89a66 Cc: <stable@vger.kernel.org> # v6.0+ Fixes: 744d23c71af3 ("net: phy: Warn about incorrect mdio_bus_phy_resume() state") Fixes: fba863b81604 ("net: phy: make PHY PM ops a no-op if MAC driver manages PHY PM") Signed-off-by: Sinthu Raja <sinthu.raja@ti.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/net/ethernet/ti/cpsw_new.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/ti/cpsw_new.c b/drivers/net/ethernet/ti/cpsw_new.c
index 498c50c6d1a7..087dcb67505a 100644
--- a/drivers/net/ethernet/ti/cpsw_new.c
+++ b/drivers/net/ethernet/ti/cpsw_new.c
@@ -773,6 +773,9 @@ static void cpsw_slave_open(struct cpsw_slave *slave, struct cpsw_priv *priv)
slave->slave_num);
return;
}
+
+ phy->mac_managed_pm = true;
+
slave->phy = phy;
phy_attached_info(slave->phy);