Messages in this thread | | | Date | Tue, 5 Oct 2021 17:38:53 +0200 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v1] usb: core: hub: improve port over-current alert msg |
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On Tue, Oct 05, 2021 at 05:16:44PM +0200, Flavio Suligoi wrote: > At the moment the port over-current message is > displayed only if the over-current condition is permanent. > > But in case of permanent short-circuit or > over-current, some USB power-distribution switches > (such as the TPS20xx, etc.), after the over-current > detection and the consequent shutdown, return > in the normal state.
Please use the full 72 columns of the changelog text.
> > So, in these cases, the over-current error message > never appears. > > To overcome this problem, the "over-current condition" > message is displayed even after some over-current events. > > Signed-off-by: Flavio Suligoi <f.suligoi@asem.it> > --- > arch/arm64/boot/dts/Makefile | 1 + > drivers/usb/core/hub.c | 5 +++-- > 2 files changed, 4 insertions(+), 2 deletions(-) > > diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile > index 639e01a4d855..bf26ce60d78a 100644 > --- a/arch/arm64/boot/dts/Makefile > +++ b/arch/arm64/boot/dts/Makefile > @@ -8,6 +8,7 @@ subdir-y += amlogic > subdir-y += apm > subdir-y += apple > subdir-y += arm > +subdir-y += asem > subdir-y += bitmain > subdir-y += broadcom > subdir-y += cavium
I do not think this change is part of this :(
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c > index 86658a81d284..ff6c8e0e2673 100644 > --- a/drivers/usb/core/hub.c > +++ b/drivers/usb/core/hub.c > @@ -5577,7 +5577,8 @@ static void port_event(struct usb_hub *hub, int port1) > msleep(100); /* Cool down */ > hub_power_on(hub, true); > hub_port_status(hub, port1, &status, &unused); > - if (status & USB_PORT_STAT_OVERCURRENT) > + if ((status & USB_PORT_STAT_OVERCURRENT) || > + !(port_dev->over_current_count % 15))
What is 15?
> dev_err(&port_dev->dev, "over-current condition\n"); > } > > @@ -5738,7 +5739,7 @@ static void hub_event(struct work_struct *work) > u16 status = 0; > u16 unused; > > - dev_dbg(hub_dev, "over-current change\n"); > + dev_info(hub_dev, "over-current change\n");
This is just going to be noisy, what can a user do with this?
thanks,
greg k-h
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