diff options
| -rw-r--r-- | drivers/char/diag/diag_dci.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/drivers/char/diag/diag_dci.c b/drivers/char/diag/diag_dci.c index 4748012a37cd..4a83fc5cc68a 100644 --- a/drivers/char/diag/diag_dci.c +++ b/drivers/char/diag/diag_dci.c @@ -1466,6 +1466,8 @@ void diag_dci_notify_client(int peripheral_mask, int data, int proc) struct siginfo info; struct list_head *start, *temp; struct diag_dci_client_tbl *entry = NULL; + struct pid *pid_struct = NULL; + struct task_struct *dci_task = NULL; memset(&info, 0, sizeof(struct siginfo)); info.si_code = SI_QUEUE; @@ -1483,20 +1485,32 @@ void diag_dci_notify_client(int peripheral_mask, int data, int proc) continue; if (entry->client_info.notification_list & peripheral_mask) { info.si_signo = entry->client_info.signal_type; - if (entry->client && - entry->tgid == entry->client->tgid) { - DIAG_LOG(DIAG_DEBUG_DCI, - "entry tgid = %d, dci client tgid = %d\n", - entry->tgid, entry->client->tgid); - stat = send_sig_info( - entry->client_info.signal_type, - &info, entry->client); - if (stat) - pr_err("diag: Err sending dci signal to client, signal data: 0x%x, stat: %d\n", + pid_struct = find_get_pid(entry->tgid); + if (pid_struct) { + dci_task = get_pid_task(pid_struct, + PIDTYPE_PID); + if (!dci_task) { + DIAG_LOG(DIAG_DEBUG_PERIPHERALS, + "diag: dci client with pid = %d Exited..\n", + entry->tgid); + mutex_unlock(&driver->dci_mutex); + return; + } + if (entry->client && + entry->tgid == dci_task->tgid) { + DIAG_LOG(DIAG_DEBUG_DCI, + "entry tgid = %d, dci client tgid = %d\n", + entry->tgid, dci_task->tgid); + stat = send_sig_info( + entry->client_info.signal_type, + &info, dci_task); + if (stat) + pr_err("diag: Err sending dci signal to client, signal data: 0x%x, stat: %d\n", info.si_int, stat); - } else - pr_err("diag: client data is corrupted, signal data: 0x%x, stat: %d\n", + } else + pr_err("diag: client data is corrupted, signal data: 0x%x, stat: %d\n", info.si_int, stat); + } } } mutex_unlock(&driver->dci_mutex); |