Re: [PATCH] xhci: workaround CSS timeout on AMD SNPS 3.0 xHC.

2018-11-20 Thread Mathias Nyman
On 16.11.2018 10:35, Kai Heng Feng wrote: Hi Sandeep, On Nov 16, 2018, at 16:21, Singh, Sandeep wrote: From: Sandeep Singh Occasionally AMD SNPS 3.0 xHC does not respond to CSS when set, also it does not flag anything on SRE and HCE to point the internal xHC errors on USBSTS register. This

Re: [PATCH] xhci: workaround CSS timeout on AMD SNPS 3.0 xHC.

2018-11-20 Thread Sandeep Singh
Hi Kai-heng, On 11/16/2018 2:05 PM, Kai Heng Feng wrote: > Hi Sandeep, > >> On Nov 16, 2018, at 16:21, Singh, Sandeep wrote: >> >> From: Sandeep Singh >> >> Occasionally AMD SNPS 3.0 xHC does not respond to >> CSS when set, also it does not flag anything on SRE and HCE >> to point the internal

Re: [PATCH] xhci: workaround CSS timeout on AMD SNPS 3.0 xHC.

2018-11-16 Thread Kai Heng Feng
Hi Sandeep, > On Nov 16, 2018, at 16:21, Singh, Sandeep wrote: > > From: Sandeep Singh > > Occasionally AMD SNPS 3.0 xHC does not respond to > CSS when set, also it does not flag anything on SRE and HCE > to point the internal xHC errors on USBSTS register. This stalls > the entire system wide

[PATCH] xhci: workaround CSS timeout on AMD SNPS 3.0 xHC.

2018-11-16 Thread Singh, Sandeep
From: Sandeep Singh Occasionally AMD SNPS 3.0 xHC does not respond to CSS when set, also it does not flag anything on SRE and HCE to point the internal xHC errors on USBSTS register. This stalls the entire system wide suspend and there is no point in stalling just because of xHC CSS is not respon