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SubjectRe: [PATCH 2/2] USB: ehci_brcm_hub_control: replace wIndex-1 with temp
On Fri, Nov 05, 2021 at 09:52:13AM +0100, Greg KH wrote:
> On Fri, Nov 05, 2021 at 04:33:57PM +0800, Haimin Zhang wrote:
> > In function `ehci_brcm_hub_control`, like following code,
> > it filters out the case where the upper byte of wIndex is nonzero,
> > so it need be replaced with temp.
>
> I do not understand this text, can you try to reword it?
>
> And you have trailing whitespace.
>
> And why use `?
>
> > ```
>
> What is this for? Changelog comments are not in markdown format.
>
> > if ((typeReq == GetPortStatus) &&
> > (wIndex && wIndex <= ports) && // need to be replaced
>
> What does this comment mean?
>
> > ehci->reset_done[wIndex-1] &&
> > time_after_eq(jiffies, ehci->reset_done[wIndex-1]) &&
> > (ehci_readl(ehci, status_reg) & PORT_RESUME)) {
> > ```
> >
> > Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
> > Reported-by: TCS Robot <tcs_robot@tencent.com>
>
> Again, lines need to be in different order, and your from: line is not
> correct.
>
> Also, you need an individual email address, not a group email alias for
> your contributions. We work with individuals, not groups.
>
>
>
> > ---
> > drivers/usb/host/ehci-brcm.c | 6 +++---
> > 1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/usb/host/ehci-brcm.c b/drivers/usb/host/ehci-brcm.c
> > index a1e3290e5459..efcfca162126 100644
> > --- a/drivers/usb/host/ehci-brcm.c
> > +++ b/drivers/usb/host/ehci-brcm.c
> > @@ -73,9 +73,9 @@ static int ehci_brcm_hub_control(
> > * of RESUME
> > */
> > if ((typeReq == GetPortStatus) &&
> > - (wIndex && wIndex <= ports) &&
> > - ehci->reset_done[wIndex-1] &&
> > - time_after_eq(jiffies, ehci->reset_done[wIndex-1]) &&
> > + (temp < ports) &&
>
> Where did temp come from?

Also, as long as this piece of code is being changed, it would be a good
idea to get rid of all the unnecessary parentheses.

Alan Stern

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