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| author |   Arnd Bergmann <arnd@arndb.de> | 2019-03-07 10:32:07 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-03-07 09:25:52 -0800 |
| commit | 8a72b81e6df516847848556d0967aefa5457f11f (patch) | |
| tree | c3fcf93b74e64c544f804ae9e1006d996f074379 /drivers/isdn | |
| parent | davinci_emac: always build in CONFIG_OF code (diff) | |
| download | linux-dev-8a72b81e6df516847848556d0967aefa5457f11f.tar.xz linux-dev-8a72b81e6df516847848556d0967aefa5457f11f.zip | |
isdn: isdnloop: fix pointer dereference bug
clang has spotted an ancient code bug and warns about it with:
drivers/isdn/isdnloop/isdnloop.c:573:12: error: address of array 'card->rcard' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
This is an array of pointers, so we should check if a specific
pointer exists in the array before using it, not whether the
array itself exists.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn')
| -rw-r--r-- | drivers/isdn/isdnloop/isdnloop.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/isdn/isdnloop/isdnloop.c b/drivers/isdn/isdnloop/isdnloop.c index f4253d468ae1..755c6bbc9553 100644 --- a/drivers/isdn/isdnloop/isdnloop.c +++ b/drivers/isdn/isdnloop/isdnloop.c @@ -570,7 +570,7 @@ isdnloop_atimeout(isdnloop_card *card, int ch) char buf[60]; spin_lock_irqsave(&card->isdnloop_lock, flags); - if (card->rcard) { + if (card->rcard[ch]) { isdnloop_fake(card->rcard[ch], "DDIS_I", card->rch[ch] + 1); card->rcard[ch]->rcard[card->rch[ch]] = NULL; card->rcard[ch] = NULL; |