From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063091; b=3EUPizXnO59//zIMNuWTAZc2rEGO+roh9FhF3PuTGbNJ9DEdtrpGizYJeQt9GipD0xL7 yI/4mZp/IGRwXmnANr00qZ5j0weHqKBeH05kIMn6Y5ra8lYmA3fsr+aZOZb9dyShY8gGa 4PjqQdW5N45TYBiuC+zrijpfkDFYQWqu6SiC4gyKf8l0DB5SXJoqY+Yw1YVLdcDMLCEdO EeHOUnxFe5yF3FOnUExInQdQGJt438DfgKB52IkStnMsYG52BBJ8SogSfxoDJgkw3/5KQ J6eI+Oq9EMw+hg670mNJGpeRJ7Jfu3uuf/ZkXNMAInc12iYiLeTudIVI8ulLHmHiNHQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063091; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=l+iNuU74E8/RA6zpqthrdm4FKbNCNUAjDYpp6zJVSWA=; b=x9JRdhU5boY02AuzMfEACvzPQmpfEodVg9huXv9vtjfaFIEV0mEKFzZVPUm5RnOwQQ/U z5mtZrjdoC5uyrPTQ/xP2ckYiVbc6Erq9wQam8Z/HJbbAyja5Tw9MXQr3Q4sr9RiAsJTp mEWDpHx+FAMopj++KyXFRLukmXYSwsIv/+BF34M306jknAiMd1Vor6ntawRdQ2DRlYqbv WpQrdQKLcCl91iepQ5me1AXlmYnySF5YYJFfala6gjla2mcjRgXpDEmvSGLJ0MlW1vuyE oULoJCM1HGk+T0YPLDl8Tm7qyTcC2dWMv87ZZW+qov5jBOn4KqWrk/HRxUnq0QfIwNw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=hZ4ossqZ; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D666A606D804; Sat, 7 Nov 2026 14:51:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=hZ4ossqZ Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7F1611F0089F; Sat, 7 Nov 2026 14:51:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063090; bh=l+iNuU74E8/RA6zpqthrdm4FKbNCNUAjDYpp6zJVSWA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=hZ4ossqZgJmDVzeU4cMm+WGbpJ/+1ev7QjKc0ywiRSjXja1LpI6i+ZaDBr9e5003G TgImsGlFlfnaWltw/pjm6DhSE2fUX8vCMrI5xdGAgupwE3AHacUSdLpFZkkYhbwq50 SNQ7poC99AqzTrowW9HAKFEuTvO4OrrXLGoCahzc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thorsten Blum , Herbert Xu , Sasha Levin Subject: [PATCH 6.18 328/869] hwrng: amd - report partial reads in non-blocking mode Date: Sat, 7 Nov 2026 08:50:10 -0500 Message-ID: <20261107134903.564821703@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thorsten Blum [ Upstream commit e7f5ce911efb2017381f28bbedb6243a74a9c285 ] 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 Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/char/hw_random/amd-rng.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/char/hw_random/amd-rng.c b/drivers/char/hw_random/amd-rng.c index 9a24d19236dc7..cc65d40a55984 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); -- 2.53.0