From: Hans Verkuil Date: Sun, 10 Jul 2016 13:11:17 +0000 (-0300) Subject: [media] cec: add check if adapter is unregistered X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=c000e5dad17d20c644bbf3ead52c334025d11ada;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [media] cec: add check if adapter is unregistered CEC USB dongles can be unplugged at any time, and at that point they will be unregistered. Make sure that any attempt afterwards to set the physical or logical addresses will be ignored. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/staging/media/cec/cec-adap.c b/drivers/staging/media/cec/cec-adap.c index 7df61870473c..2cd656bd5272 100644 --- a/drivers/staging/media/cec/cec-adap.c +++ b/drivers/staging/media/cec/cec-adap.c @@ -1104,7 +1104,7 @@ static void cec_claim_log_addrs(struct cec_adapter *adap, bool block) */ void __cec_s_phys_addr(struct cec_adapter *adap, u16 phys_addr, bool block) { - if (phys_addr == adap->phys_addr) + if (phys_addr == adap->phys_addr || adap->devnode.unregistered) return; if (phys_addr == CEC_PHYS_ADDR_INVALID || @@ -1158,6 +1158,9 @@ int __cec_s_log_addrs(struct cec_adapter *adap, u16 type_mask = 0; int i; + if (adap->devnode.unregistered) + return -ENODEV; + if (!log_addrs || log_addrs->num_log_addrs == 0) { adap->log_addrs.num_log_addrs = 0; cec_adap_unconfigure(adap);