| Message ID | 20220112032100.610146-1-waynec@nvidia.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v3,1/1] ucsi_ccg: Check DEV_INT bit only when starting CCG4 | expand |
On Wed, Jan 12, 2022 at 11:21:00AM +0800, Wayne Chang wrote: > From: Sing-Han Chen <singhanc@nvidia.com> > > after driver sending the UCSI_START cmd, CCGx would > clear Bit 0:Device Interrupt in the INTR_REG if CCGX > reset successfully. > > however, there might be a chance that other bits in > INTR_REG are not cleared due to internal data queued > in PPM and cause the driver thinks CCGx reset failed. > > the commit checks bit 0 in INTR_REG and ignore other > bits. ucsi driver would reset PPM later. > > Fixes: 247c554a14aa16ca ("usb: typec: ucsi: add support for Cypress CCGx") > Signed-off-by: Sing-Han Chen <singhanc@nvidia.com> > Signed-off-by: Wayne Chang <waynec@nvidia.com> > --- > drivers/usb/typec/ucsi/ucsi_ccg.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c > index bff96d64dddf..6db7c8ddd51c 100644 > --- a/drivers/usb/typec/ucsi/ucsi_ccg.c > +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c > @@ -325,7 +325,7 @@ static int ucsi_ccg_init(struct ucsi_ccg *uc) > if (status < 0) > return status; > > - if (!data) > + if (!(data & DEV_INT)) > return 0; > > status = ccg_write(uc, CCGX_RAB_INTR_REG, &data, sizeof(data)); > -- > 2.25.1 > Hi, This is the friendly patch-bot of Greg Kroah-Hartman. You have sent him a patch that has triggered this response. He used to manually respond to these common problems, but in order to save his sanity (he kept writing the same thing over and over, yet to different people), I was created. Hopefully you will not take offence and will fix the problem in your patch and resubmit it so that it can be accepted into the Linux kernel tree. You are receiving this message because of the following common error(s) as indicated below: - This looks like a new version of a previously submitted patch, but you did not list below the --- line any changes from the previous version. Please read the section entitled "The canonical patch format" in the kernel file, Documentation/SubmittingPatches for what needs to be done here to properly describe this. If you wish to discuss this problem further, or you have questions about how to resolve this issue, please feel free to respond to this email and Greg will reply once he has dug out from the pending patches received from other developers. thanks, greg k-h's patch email bot
diff --git a/drivers/usb/typec/ucsi/ucsi_ccg.c b/drivers/usb/typec/ucsi/ucsi_ccg.c index bff96d64dddf..6db7c8ddd51c 100644 --- a/drivers/usb/typec/ucsi/ucsi_ccg.c +++ b/drivers/usb/typec/ucsi/ucsi_ccg.c @@ -325,7 +325,7 @@ static int ucsi_ccg_init(struct ucsi_ccg *uc) if (status < 0) return status; - if (!data) + if (!(data & DEV_INT)) return 0; status = ccg_write(uc, CCGX_RAB_INTR_REG, &data, sizeof(data));