Messages in this thread | | | Date | Tue, 29 Dec 2015 17:46:51 -0800 | From | Greg Kroah-Hartman <> | Subject | Re: [PATCH v2 1/1] usb: cdc-acm: handle unlinked urb in acm read callback |
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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 even those urbs might have data not processed yet. > Hence, data loss occurs. > > This patch lets bulk-in callback function handle unlinked urbs > to avoid data loss. > > Signed-off-by: Tang Jian Qiang <jianqiang.tang@intel.com> > Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> > Cc: stable@vger.kernel.org > Acked-by: Oliver Neukum <oneukum@suse.com> > --- > drivers/usb/class/cdc-acm.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-)
What changed in v2?
Please always document that below the --- line.
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