[patch] drbd: silence underflow warning in read_in_block()

My static checker warns that "data_size" could be negative and underflow the limit check. The code looks suspicious but I don't know if it is a real bug. Signed-off-by: Dan Carpenter diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index b6c8aaf..15daf86d

[patch] drbd: silence underflow warning in read_in_block()

My static checker warns that data_size could be negative and underflow the limit check. The code looks suspicious but I don't know if it is a real bug. Signed-off-by: Dan Carpenter dan.carpen...@oracle.com diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c