9da2746602
MST pointed out: config change callback is also handled incorrectly in this driver, it takes a mutex from interrupt context. Handle config changed by work queue instead. Cc: Gonglei (Arei) <arei.gonglei@huawei.com> Cc: Halil Pasic <pasic@linux.ibm.com> Cc: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>