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authorKarsten Keil <kkeil@linux-pingi.de>2012-07-12 07:01:10 +0000
committerDavid S. Miller <davem@davemloft.net>2012-07-18 09:40:54 -0700
commit5b999fd04af95e2cb624aaf6a7637561572b2d96 (patch)
tree7652915d0d5a8e9e27b1252da1e1c7e8c700a8b7 /drivers/isdn
parent7be7e93268447cbb42fa0e6939b6372c156a1ad5 (diff)
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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 <kkeil@linux-pingi.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
-rw-r--r--drivers/isdn/hisax/isurf.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/isdn/hisax/isurf.c b/drivers/isdn/hisax/isurf.c
index ea271721529..c1530fe248c 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);