From bddb1531086ff40e8eb81dd1e30b56407a7a4279 Mon Sep 17 00:00:00 2001 From: Daeseok Youn Date: Mon, 9 May 2016 11:47:34 +0900 Subject: [PATCH] staging: dgnc: Need to check for NULL of ch the "ch" from brd structure could be NULL, it need to check for NULL. Signed-off-by: Daeseok Youn Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dgnc/dgnc_neo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/dgnc/dgnc_neo.c b/drivers/staging/dgnc/dgnc_neo.c index 9eae1a695980..ba57e9546f72 100644 --- a/drivers/staging/dgnc/dgnc_neo.c +++ b/drivers/staging/dgnc/dgnc_neo.c @@ -380,7 +380,7 @@ static inline void neo_parse_isr(struct dgnc_board *brd, uint port) unsigned long flags; ch = brd->channels[port]; - if (ch->magic != DGNC_CHANNEL_MAGIC) + if (!ch || ch->magic != DGNC_CHANNEL_MAGIC) return; /* Here we try to figure out what caused the interrupt to happen */