From 5b999fd04af95e2cb624aaf6a7637561572b2d96 Mon Sep 17 00:00:00 2001 From: Karsten Keil Date: Thu, 12 Jul 2012 07:01:10 +0000 Subject: [PATCH] ISDN: Add check for return value of pnp_activate_dev() pnp_activate_dev() return value needs to be checked to make sure that following calls calls to the PNP functions do work correctly. Fix for report #44491 on bugzilla.kernel.org. Signed-off-by: Karsten Keil Signed-off-by: David S. Miller --- drivers/isdn/hisax/isurf.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/isdn/hisax/isurf.c b/drivers/isdn/hisax/isurf.c index ea2717215296..c1530fe248c2 100644 --- a/drivers/isdn/hisax/isurf.c +++ b/drivers/isdn/hisax/isurf.c @@ -231,6 +231,11 @@ setup_isurf(struct IsdnCard *card) } pnp_disable_dev(pnp_d); err = pnp_activate_dev(pnp_d); + if (err < 0) { + pr_warn("%s: pnp_activate_dev ret=%d\n", + __func__, err); + return 0; + } cs->hw.isurf.reset = pnp_port_start(pnp_d, 0); cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1); cs->irq = pnp_irq(pnp_d, 0); -- 2.20.1