diff options
| -rw-r--r-- | drivers/hwtracing/stm/dummy_stm.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/hwtracing/stm/dummy_stm.c b/drivers/hwtracing/stm/dummy_stm.c index 4ff5961cd36f..310adf57e7a1 100644 --- a/drivers/hwtracing/stm/dummy_stm.c +++ b/drivers/hwtracing/stm/dummy_stm.c @@ -50,6 +50,19 @@ module_param(nr_dummies, int, 0600); static unsigned int dummy_stm_nr; +static unsigned int fail_mode; + +module_param(fail_mode, int, 0600); + +static int dummy_stm_link(struct stm_data *data, unsigned int master, + unsigned int channel) +{ + if (fail_mode && (channel & fail_mode)) + return -EINVAL; + + return 0; +} + static int dummy_stm_init(void) { int i, ret = -ENOMEM, __nr_dummies = ACCESS_ONCE(nr_dummies); @@ -66,6 +79,7 @@ static int dummy_stm_init(void) dummy_stm[i].sw_end = 0xffff; dummy_stm[i].sw_nchannels = 0xffff; dummy_stm[i].packet = dummy_stm_packet; + dummy_stm[i].link = dummy_stm_link; ret = stm_register_device(NULL, &dummy_stm[i], THIS_MODULE); if (ret) |