[PATCH 4.9 212/310] nvme-pci: fix multiple ctrl removal scheduling

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Rakesh Pandit [ Upstream commit 82b057caefaff2a891f821a617d939f46e03e844 ] Commit c5f6ce97c1210 tries to address multiple resets but fails as work_busy doesn't involve any

[PATCH 4.9 212/310] nvme-pci: fix multiple ctrl removal scheduling

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Rakesh Pandit [ Upstream commit 82b057caefaff2a891f821a617d939f46e03e844 ] Commit c5f6ce97c1210 tries to address multiple resets but fails as work_busy doesn't involve any synchronization and