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| author | Asaf Vertz <asaf.vertz@tandemg.com> | 2015-01-05 10:23:10 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-01-08 21:46:17 +1100 |
| commit | 42d2e780c6239040ec29d404f87e752de3627e08 (patch) | |
| tree | 1eeadf3c1b7324dba54e957ee83d61e8baaa177e /drivers/crypto/omap-des.c | |
| parent | 28c29f5657e886cf89778622af3f6569329508df (diff) | |
| download | linux-42d2e780c6239040ec29d404f87e752de3627e08.tar.gz linux-42d2e780c6239040ec29d404f87e752de3627e08.tar.bz2 linux-42d2e780c6239040ec29d404f87e752de3627e08.zip | |
crypto: omap-des - fix BUG_ON condition
dd->total is unsigned so it won't do any good to check for negative
value after subtracting instead of that we should check if the
subtracted value is bigger than him
This was partially found by using a static code analysis program
called cppcheck.
Signed-off-by: Asaf Vertz <asaf.vertz@tandemg.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/omap-des.c')
| -rw-r--r-- | drivers/crypto/omap-des.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c index e350f5be4d2e..0b8dcf5eb74e 100644 --- a/drivers/crypto/omap-des.c +++ b/drivers/crypto/omap-des.c @@ -965,9 +965,9 @@ static irqreturn_t omap_des_irq(int irq, void *dev_id) } } - dd->total -= DES_BLOCK_SIZE; + BUG_ON(dd->total < DES_BLOCK_SIZE); - BUG_ON(dd->total < 0); + dd->total -= DES_BLOCK_SIZE; /* Clear IRQ status */ status &= ~DES_REG_IRQ_DATA_OUT; |