Re: [PATCH v2 1/1] usb: cdc-acm: handle unlinked urb in acm read callback

On 12/30/2015 09:46 AM, Greg Kroah-Hartman wrote: > On Wed, Dec 30, 2015 at 08:42:01AM +0800, Lu Baolu wrote: >> In current acm driver, the bulk-in callback function ignores the >> URBs unlinked in usb core. >> >> This causes unexpected data loss in some cases. For example, >> runtime suspend ent

Re: [PATCH v2 1/1] usb: cdc-acm: handle unlinked urb in acm read callback

On Wed, Dec 30, 2015 at 08:42:01AM +0800, Lu Baolu wrote: > In current acm driver, the bulk-in callback function ignores the > URBs unlinked in usb core. > > This causes unexpected data loss in some cases. For example, > runtime suspend entry will unlinked all urbs and set urb->status > to -ENOENT

[PATCH v2 1/1] usb: cdc-acm: handle unlinked urb in acm read callback

In current acm driver, the bulk-in callback function ignores the URBs unlinked in usb core. This causes unexpected data loss in some cases. For example, runtime suspend entry will unlinked all urbs and set urb->status to -ENOENT even those urbs might have data not processed yet. Hence, data loss o