[PATCH v2] tty: hvc: Fix data abort due to race in hvc_open

nce, do a NULL check at the beginning, before proceeding ahead. The issue can be easily reproduced by launching two tasks simultaneously that does an open() call on /dev/hvcX. For example: $ cat /dev/hvc0 & cat /dev/hvc0 & Cc: sta...@vger.kernel.org Signed-off-by: Raghavendra Rao Ananta

[PATCH] tty: hvc: Fix data abort due to race in hvc_open

c0 & Signed-off-by: Raghavendra Rao Ananta --- drivers/tty/hvc/hvc_console.c | 16 ++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c index 436cc51c92c3..ebe26fe5ac09 100644 --- a/drivers/tty/hvc/hvc_con