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From: Thorsten Blum <blum@kernel.org>
To: Laurent Vivier <lvivier@redhat.com>,
	Olivia Mackall <olivia@selenic.com>,
	Herbert Xu <herbert@gondor.apana.org.au>
Cc: Thorsten Blum <blum@kernel.org>,
	virtualization@lists.linux.dev, linux-crypto@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] hwrng: virtio - use min() in copy_data()
Date: Sat, 26 Sep 2026 07:58:54 +0200	[thread overview]
Message-ID: <20260926055853.4868-3-blum@kernel.org> (raw)

Use the simpler min() macro since all values are unsigned and
compatible. The subtraction avail - vi->data_idx is also guaranteed to
be positive by the preceding check.

Signed-off-by: Thorsten Blum <blum@kernel.org>
---
 drivers/char/hw_random/virtio-rng.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index 5e83ffa105e4..5b1b23b5596a 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -81,13 +81,13 @@ static unsigned int copy_data(struct virtrng_info *vi, void *buf,
 	 * steered into adjacent slab memory, including under
 	 * speculation.
 	 */
-	avail = min_t(unsigned int, vi->data_avail, sizeof(vi->data));
+	avail = min(vi->data_avail, sizeof(vi->data));
 	if (vi->data_idx >= avail) {
 		vi->data_avail = 0;
 		request_entropy(vi);
 		return 0;
 	}
-	size = min_t(unsigned int, size, avail - vi->data_idx);
+	size = min(size, avail - vi->data_idx);
 	idx = array_index_nospec(vi->data_idx, sizeof(vi->data));
 	memcpy(buf, vi->data + idx, size);
 	vi->data_idx += size;

             reply	other threads:[~2026-09-26  5:59 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-26  5:58 Thorsten Blum [this message]
2026-09-26  5:58 ` [PATCH 2/2] hwrng: virtio - use snprintf() in probe_common() Thorsten Blum
2026-09-26  6:02   ` sashiko-bot
2026-09-28  6:24   ` Thomas Huth
2026-09-28  6:31   ` Laurent Vivier
2026-09-26  6:03 ` [PATCH 1/2] hwrng: virtio - use min() in copy_data() sashiko-bot
2026-10-02 10:15 ` Herbert Xu

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