diff options
| author | Thorsten Blum <blum@kernel.org> | 2026-09-23 22:12:58 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2026-10-02 18:12:44 +1000 |
| commit | e7f5ce911efb2017381f28bbedb6243a74a9c285 (patch) | |
| tree | 62549156a27c9be55b545bd61980bf9ffd6a91f9 | |
| parent | 10016246d5e572ed77c3eec2311c34b6d6b789a6 (diff) | |
hwrng: amd - report partial reads in non-blocking mode
amd_rng_read() returns 0 if no more data is available, even if some data
was already copied to the output buffer. Return the number of copied
bytes instead.
Fixes: 85962d2248fa ("hwrng: amd - Convert to new hwrng read() API")
Cc: stable@vger.kernel.org
Signed-off-by: Thorsten Blum <blum@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
| -rw-r--r-- | drivers/char/hw_random/amd-rng.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/hw_random/amd-rng.c b/drivers/char/hw_random/amd-rng.c index dff80daae587..ac2d257793bf 100644 --- a/drivers/char/hw_random/amd-rng.c +++ b/drivers/char/hw_random/amd-rng.c @@ -80,7 +80,7 @@ static int amd_rng_read(struct hwrng *rng, void *buf, size_t max, bool wait) if (timeout-- == 0) return read; } else { - return 0; + return read; } } else { *data = ioread32(priv->iobase + RNGDATA); |