This series fixes a failure to stop I/O on disconnect() in the usblcd driver. Turns out there was a lot of legacy cruft in this driver which could simply be removed. The first patch is marked for stable and could go into v5.4 while the rest is v5.5 material. Posting all at once for completeness. I was tempted to rip out the custom ioctls() used to retrieve the driver version and bcdDevice (sic!), but decided to leave them in. I doubt anyone would miss them though so perhaps we should give it a go? Tested using a mockup device. Johan Johan Hovold (4): USB: usblcd: fix I/O after disconnect USB: usblcd: drop redundant disconnect mutex USB: usblcd: drop redundant lcd mutex USB: usblcd: use pr_err() drivers/usb/misc/usblcd.c | 60 +++++++++++++++++++++------------------ 1 file changed, 33 insertions(+), 27 deletions(-) -- 2.23.0
