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authorJulia Lawall <julia@diku.dk>2008-11-14 19:08:18 +0100
committerTakashi Iwai <tiwai@suse.de>2008-11-15 19:07:29 +0100
commitd6f35e3f0da14a5eb02114708d88ae2f59dc8283 (patch)
tree4f55cce13c5077651ab4452a49ab89355ba2e336
parent0f101fa6bccdc797ddcee40fd4c55e879155a40f (diff)
ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_device
Error handling code following a kzalloc should free the allocated data. The error handling code is adjusted to call pci_disable_device(pci); as well, as done later in the function The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,l; position p1,p2; expression *ptr != NULL; @@ ( if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S | x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S ) <... when != x when != if (...) { <+...x...+> } x->f = E ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/pci/pcxhr/pcxhr.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/pci/pcxhr/pcxhr.c b/sound/pci/pcxhr/pcxhr.c
index 0e06c6c..73de6e9 100644
--- a/sound/pci/pcxhr/pcxhr.c
+++ b/sound/pci/pcxhr/pcxhr.c
@@ -1229,8 +1229,11 @@ static int __devinit pcxhr_probe(struct pci_dev *pci, const struct pci_device_id
return -ENOMEM;
}
- if (snd_BUG_ON(pci_id->driver_data >= PCI_ID_LAST))
+ if (snd_BUG_ON(pci_id->driver_data >= PCI_ID_LAST)) {
+ kfree(mgr);
+ pci_disable_device(pci);
return -ENODEV;
+ }
card_name = pcxhr_board_params[pci_id->driver_data].board_name;
mgr->playback_chips = pcxhr_board_params[pci_id->driver_data].playback_chips;
mgr->capture_chips = pcxhr_board_params[pci_id->driver_data].capture_chips;