* [PATCH] e1000e: Print PHY register address when MDI read/write fails @ 2022-02-09 23:43 Chen Yu 2022-02-09 16:54 ` [Intel-wired-lan] " Paul Menzel 0 siblings, 1 reply; 3+ messages in thread From: Chen Yu @ 2022-02-09 23:43 UTC (permalink / raw) To: intel-wired-lan Cc: netdev, linux-kernel, Jesse Brandeburg, Tony Nguyen, David S. Miller, Todd Brandt, Len Brown, Chen Yu There is occasional suspend error from e1000e which blocks the system from further suspending: [ 20.078957] PM: pci_pm_suspend(): e1000e_pm_suspend+0x0/0x780 [e1000e] returns -2 [ 20.078970] PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -2 [ 20.078974] e1000e 0000:00:1f.6: PM: pci_pm_suspend+0x0/0x170 returned -2 after 371012 usecs [ 20.078978] e1000e 0000:00:1f.6: PM: failed to suspend async: error -2 According to the code flow, this might be caused by broken MDI read/write to PHY registers. However currently the code does not tell us which register is broken. Thus enhance the debug information to print the offender PHY register for easier debugging. Reported-by: Todd Brandt <todd.e.brandt@intel.com> Signed-off-by: Chen Yu <yu.c.chen@intel.com> --- drivers/net/ethernet/intel/e1000e/phy.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c index 0f0efee5fc8e..fd07c3679bb1 100644 --- a/drivers/net/ethernet/intel/e1000e/phy.c +++ b/drivers/net/ethernet/intel/e1000e/phy.c @@ -146,11 +146,11 @@ s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) break; } if (!(mdic & E1000_MDIC_READY)) { - e_dbg("MDI Read did not complete\n"); + e_dbg("MDI Read PHY Reg Address %d did not complete\n", offset); return -E1000_ERR_PHY; } if (mdic & E1000_MDIC_ERROR) { - e_dbg("MDI Error\n"); + e_dbg("MDI Read PHY Reg Address %d Error\n", offset); return -E1000_ERR_PHY; } if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { @@ -210,11 +210,11 @@ s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) break; } if (!(mdic & E1000_MDIC_READY)) { - e_dbg("MDI Write did not complete\n"); + e_dbg("MDI Write PHY Reg Address %d did not complete\n", offset); return -E1000_ERR_PHY; } if (mdic & E1000_MDIC_ERROR) { - e_dbg("MDI Error\n"); + e_dbg("MDI Write PHY Red Address %d Error\n", offset); return -E1000_ERR_PHY; } if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { -- 2.25.1 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [Intel-wired-lan] [PATCH] e1000e: Print PHY register address when MDI read/write fails 2022-02-09 23:43 [PATCH] e1000e: Print PHY register address when MDI read/write fails Chen Yu @ 2022-02-09 16:54 ` Paul Menzel 2022-02-10 11:56 ` Chen Yu 0 siblings, 1 reply; 3+ messages in thread From: Paul Menzel @ 2022-02-09 16:54 UTC (permalink / raw) To: Chen Yu Cc: intel-wired-lan, Len Brown, netdev, linux-kernel, Todd Brandt, David S. Miller Dear Chen, First, your system time is incorrect, and the message date from the future. Am 10.02.22 um 00:43 schrieb Chen Yu: > There is occasional suspend error from e1000e which blocks the > system from further suspending: Please add a blank line here. Also, please document the specific board/configuration in question. > [ 20.078957] PM: pci_pm_suspend(): e1000e_pm_suspend+0x0/0x780 [e1000e] returns -2 > [ 20.078970] PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -2 > [ 20.078974] e1000e 0000:00:1f.6: PM: pci_pm_suspend+0x0/0x170 returned -2 after 371012 usecs > [ 20.078978] e1000e 0000:00:1f.6: PM: failed to suspend async: error -2 Please add a blank line her.e > According to the code flow, this might be caused by broken MDI read/write to PHY registers. > However currently the code does not tell us which register is broken. Thus enhance the debug > information to print the offender PHY register for easier debugging. Please reflow for 75 characters per line, and maybe even paste the new messages, if you have a system, where you can reproduce that on. > Reported-by: Todd Brandt <todd.e.brandt@intel.com> > Signed-off-by: Chen Yu <yu.c.chen@intel.com> > --- > drivers/net/ethernet/intel/e1000e/phy.c | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c > index 0f0efee5fc8e..fd07c3679bb1 100644 > --- a/drivers/net/ethernet/intel/e1000e/phy.c > +++ b/drivers/net/ethernet/intel/e1000e/phy.c > @@ -146,11 +146,11 @@ s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) > break; > } > if (!(mdic & E1000_MDIC_READY)) { > - e_dbg("MDI Read did not complete\n"); > + e_dbg("MDI Read PHY Reg Address %d did not complete\n", offset); > return -E1000_ERR_PHY; > } > if (mdic & E1000_MDIC_ERROR) { > - e_dbg("MDI Error\n"); > + e_dbg("MDI Read PHY Reg Address %d Error\n", offset); > return -E1000_ERR_PHY; > } > if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { > @@ -210,11 +210,11 @@ s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) > break; > } > if (!(mdic & E1000_MDIC_READY)) { > - e_dbg("MDI Write did not complete\n"); > + e_dbg("MDI Write PHY Reg Address %d did not complete\n", offset); > return -E1000_ERR_PHY; > } > if (mdic & E1000_MDIC_ERROR) { > - e_dbg("MDI Error\n"); > + e_dbg("MDI Write PHY Red Address %d Error\n", offset); > return -E1000_ERR_PHY; > } > if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> Kind regards, Paul ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Intel-wired-lan] [PATCH] e1000e: Print PHY register address when MDI read/write fails 2022-02-09 16:54 ` [Intel-wired-lan] " Paul Menzel @ 2022-02-10 11:56 ` Chen Yu 0 siblings, 0 replies; 3+ messages in thread From: Chen Yu @ 2022-02-10 11:56 UTC (permalink / raw) To: Paul Menzel Cc: intel-wired-lan, Len Brown, netdev, linux-kernel, Todd Brandt, David S. Miller Hi Paul, thanks for the review, On Wed, Feb 09, 2022 at 05:54:25PM +0100, Paul Menzel wrote: > Dear Chen, > > > First, your system time is incorrect, and the message date from the future. > I did not realize this after the system been re-installed recently, thanks for reminding me. > > Am 10.02.22 um 00:43 schrieb Chen Yu: > > There is occasional suspend error from e1000e which blocks the > > system from further suspending: > > Please add a blank line here. > Ok. > Also, please document the specific board/configuration in question. > Ok. > > [ 20.078957] PM: pci_pm_suspend(): e1000e_pm_suspend+0x0/0x780 [e1000e] returns -2 > > [ 20.078970] PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -2 > > [ 20.078974] e1000e 0000:00:1f.6: PM: pci_pm_suspend+0x0/0x170 returned -2 after 371012 usecs > > [ 20.078978] e1000e 0000:00:1f.6: PM: failed to suspend async: error -2 > > Please add a blank line her.e > Ok. > > According to the code flow, this might be caused by broken MDI read/write to PHY registers. > > However currently the code does not tell us which register is broken. Thus enhance the debug > > information to print the offender PHY register for easier debugging. > > Please reflow for 75 characters per line, and maybe even paste the new > messages, if you have a system, where you can reproduce that on. > Ok, will do. Thanks, Chenyu > > Reported-by: Todd Brandt <todd.e.brandt@intel.com> > > Signed-off-by: Chen Yu <yu.c.chen@intel.com> > > --- > > drivers/net/ethernet/intel/e1000e/phy.c | 8 ++++---- > > 1 file changed, 4 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/net/ethernet/intel/e1000e/phy.c b/drivers/net/ethernet/intel/e1000e/phy.c > > index 0f0efee5fc8e..fd07c3679bb1 100644 > > --- a/drivers/net/ethernet/intel/e1000e/phy.c > > +++ b/drivers/net/ethernet/intel/e1000e/phy.c > > @@ -146,11 +146,11 @@ s32 e1000e_read_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 *data) > > break; > > } > > if (!(mdic & E1000_MDIC_READY)) { > > - e_dbg("MDI Read did not complete\n"); > > + e_dbg("MDI Read PHY Reg Address %d did not complete\n", offset); > > return -E1000_ERR_PHY; > > } > > if (mdic & E1000_MDIC_ERROR) { > > - e_dbg("MDI Error\n"); > > + e_dbg("MDI Read PHY Reg Address %d Error\n", offset); > > return -E1000_ERR_PHY; > > } > > if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { > > @@ -210,11 +210,11 @@ s32 e1000e_write_phy_reg_mdic(struct e1000_hw *hw, u32 offset, u16 data) > > break; > > } > > if (!(mdic & E1000_MDIC_READY)) { > > - e_dbg("MDI Write did not complete\n"); > > + e_dbg("MDI Write PHY Reg Address %d did not complete\n", offset); > > return -E1000_ERR_PHY; > > } > > if (mdic & E1000_MDIC_ERROR) { > > - e_dbg("MDI Error\n"); > > + e_dbg("MDI Write PHY Red Address %d Error\n", offset); > > return -E1000_ERR_PHY; > > } > > if (((mdic & E1000_MDIC_REG_MASK) >> E1000_MDIC_REG_SHIFT) != offset) { > > Acked-by: Paul Menzel <pmenzel@molgen.mpg.de> > > > Kind regards, > > Paul ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-02-10 11:57 UTC | newest] Thread overview: 3+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2022-02-09 23:43 [PATCH] e1000e: Print PHY register address when MDI read/write fails Chen Yu 2022-02-09 16:54 ` [Intel-wired-lan] " Paul Menzel 2022-02-10 11:56 ` Chen Yu
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