Messages in this thread Patch in this message | | | From | Colin King <> | Subject | [PATCH][next] hwrng: exynos: check for -ve error return from readl_poll_timeout | Date | Fri, 12 Jan 2018 16:30:48 +0000 |
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From: Colin Ian King <colin.king@canonical.com>
Currently, the return from readl_poll_timeout is being assigned to a u32 and this is being checked for a -ve return which is always false since a u32 cannot be less than zero. Fix this by changing val to an int so that error returns can be correctly detected.
Detected by CoverityScan, CID#1463776 ("Logically dead code")
Fixes: 6cd225cc5d8a ("hwrng: exynos - add Samsung Exynos True RNG driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> --- drivers/char/hw_random/exynos-trng.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/char/hw_random/exynos-trng.c b/drivers/char/hw_random/exynos-trng.c index 34d6f51ecbee..f4643e3ec346 100644 --- a/drivers/char/hw_random/exynos-trng.c +++ b/drivers/char/hw_random/exynos-trng.c @@ -55,7 +55,7 @@ static int exynos_trng_do_read(struct hwrng *rng, void *data, size_t max, bool wait) { struct exynos_trng_dev *trng; - u32 val; + int val; max = min_t(size_t, max, (EXYNOS_TRNG_FIFO_LEN * 4)); -- 2.15.1
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