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| author | Phil Carmody <ext-phil.2.carmody@nokia.com> | 2010-05-24 14:33:04 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-05-25 08:07:03 -0700 |
| commit | 08a82c6872ac1d37cb993a52f1b35f97f48295bd (patch) | |
| tree | 43599b0869e8001e3e207e3498a5d510720070f2 | |
| parent | 4be929be34f9bdeffa40d815d32d7d60d2c7f03b (diff) | |
| download | linux-stable-08a82c6872ac1d37cb993a52f1b35f97f48295bd.tar.gz linux-stable-08a82c6872ac1d37cb993a52f1b35f97f48295bd.tar.bz2 linux-stable-08a82c6872ac1d37cb993a52f1b35f97f48295bd.zip | |
hvsi: fix messed up error checking getting state name
Handle out-of-range indices before reading what they refer to. And don't
access the one-past-the-end element of the array either.
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Roel Kluin <roel.kluin@gmail.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/char/hvsi.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/char/hvsi.c b/drivers/char/hvsi.c index 793b236c9266..d4b14ff1c4c1 100644 --- a/drivers/char/hvsi.c +++ b/drivers/char/hvsi.c @@ -194,10 +194,8 @@ static inline void print_state(struct hvsi_struct *hp) "HVSI_WAIT_FOR_MCTRL_RESPONSE", "HVSI_FSP_DIED", }; - const char *name = state_names[hp->state]; - - if (hp->state > ARRAY_SIZE(state_names)) - name = "UNKNOWN"; + const char *name = (hp->state < ARRAY_SIZE(state_names)) + ? state_names[hp->state] : "UNKNOWN"; pr_debug("hvsi%i: state = %s\n", hp->index, name); #endif /* DEBUG */ |