On Thu, May 14, 2020 at 12:00:23PM -0500, Bin Liu wrote: > > Still, it's worth pointing out that this change abuses the API (perhaps > > mentioning it in a comment). And it still would be preferable to fix > > Okay, I will add those notes in comment in v2. > > > the drivers in question, impractical though that may be. (I have a hard > > time believing there are really 500 of them getting this wrong...) > > I am not sure about it either, but yeah it is not practical to fix the > issue in device drivers. So far I have seen 3 reports of this issue: > > 1. with FTDI usb-serial adapter, the issue is in the usb serial generic > driver; It shouldn't be hard to fix this. We don't even need a delayed retry; the driver can simply treat -EPROTO as an unrecoverable error, just like -ESHUTDOWN. Alan Stern > 2. with a modem, the issue is in usb wwan driver as I fixed in the patch > I sent yesterday; > > 2. another modem, before I was able to locate the offending device > driver, the guy who reported the issue disappeared, and not responding > me. > > -Bin.
