AcoSail/kernel_optimize_test
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ISDN HiSax: uninitialized return in hisax_cs_setup

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Coverity (1792) spotted a possibly uninitialized return value in case of
kmalloc() failure:

1116 static int hisax_cs_setup(int cardnr, struct IsdnCard *card,
1117                           struct IsdnCardState *cs)
1119         int ret;
1120
1121         if (!(cs->rcvbuf = kmalloc(MAX_DFRAME_LEN_L1, GFP_ATOMIC))) {
1122                 printk(KERN_WARNING "HiSax: No memory for isac rcvbuf\n");
1123                 ll_unload(cs);
1124                 goto outf_cs;
...
1165 outf_cs:
1166         kfree(cs);
1167         card->cs = NULL;
1168         return ret;

The straightforward solution would be to just add the missing
initialization but hardcoding the return value in the out_cs branch
(only taken on failure) seems to work just as well and it allows killing
a couple of other lines too.

Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Florin Malita 2007-07-18 18:04:46 -04:00 committed by Jeff Garzik
parent 5bae7ac9fe
commit 9ee0be05dc
1 changed files with 1 additions and 3 deletions
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4
drivers/isdn/hisax/config.c
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@ -1146,14 +1146,12 @@ static int hisax_cs_setup(int cardnr, struct IsdnCard *card,
}
if (ret) {
closecard(cardnr);
ret = 0;
goto outf_cs;
}
init_tei(cs, cs->protocol);
ret = CallcNewChan(cs);
if (ret) {
closecard(cardnr);
ret = 0;
goto outf_cs;
}
/* ISAR needs firmware download first */
@ -1165,7 +1163,7 @@ static int hisax_cs_setup(int cardnr, struct IsdnCard *card,
outf_cs:
kfree(cs);
card->cs = NULL;
return ret;
return 0;
}
static int checkcard(int cardnr, char *id, int *busy_flag, struct module *lockowner)