From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A573D3446B0 for ; Sat, 28 Feb 2026 18:07:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302060; cv=none; b=NxTB1uBEZaOud3oApVEIh2wafcYQiyikHwveuxt2mnCK+TIC5ZHI/+gQoiYzHCmRvGi6YTr+JDilYbXElS9l620n1enZsWBIBO8TpwcEqW7jypWbeIu6lnXTfz/koQNZPMeriPl+fqVWTFiJn10aHO94m6hE8rac0RBt3U/ePss= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302060; c=relaxed/simple; bh=q8X8MBEwp2Go2BrwBJReHiSh+RdnnXqRLSsk8xBt+nk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=K1/mp9ik7lwi6zPgRyFVF0g9W9iHldBO3+JwbfITQ1H3I7nrPg+bg84FLmx+4eh40IWeBkTuLtyHEsp0Ev2K7fSaE6MteTb7PJRSJz++X/k64FV0le9wfoF5uwqo19K+wBOakmd/BWVCIEQR8W3gFA9OLiHPOabrU0zGdK7NoXI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=At8pHzom; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="At8pHzom" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 00C5DC116D0; Sat, 28 Feb 2026 18:07:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302060; bh=q8X8MBEwp2Go2BrwBJReHiSh+RdnnXqRLSsk8xBt+nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=At8pHzomhfOBm2NT/KxAUprT6fymFl6wpC0PunjTrFH0WrvWL54nx+vW7RaasXCSw KHDRx/hqTkfsZU/+7zR5aKv5SGYTNbd0E6crNu941i1O8s7tF1GYvHDW6SVYTELvVE 8JzvUmOAqnzlgj2z/hysnC0uEEclLY2YIDiHHcPJWcihaK+V2dnDSAcrS6wbytTMPH viZQSkStyJ94N4YzXWumVn8GlYFTBnuZX5AaUgvja5GDJEmax9y+bAkzGm0yB0LweV QZi0KeWxmsyIdgoFSHJ2wS7nupGupf0xgGfjiXWRd583au9imkL2AInt+Jf41/HpRp vn6iBfv2h3Tew== From: Sasha Levin To: patches@lists.linux.dev Cc: Giovanni Cabiddu , Ahsan Atta , Herbert Xu , Sasha Levin Subject: [PATCH 6.6 037/283] crypto: qat - fix warning on adf_pfvf_pf_proto.c Date: Sat, 28 Feb 2026 13:02:59 -0500 Message-ID: <20260228180709.1583486-37-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228180709.1583486-1-sashal@kernel.org> References: <20260228180709.1583486-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Giovanni Cabiddu [ Upstream commit 994689b8f91b02fdb5f64cba2412cde5ef3084b5 ] Building the QAT driver with -Wmaybe-uninitialized triggers warnings in qat_common/adf_pfvf_pf_proto.c. Specifically, the variables blk_type, blk_byte, and byte_max may be used uninitialized in handle_blkmsg_req(): make M=drivers/crypto/intel/qat W=1 C=2 "KCFLAGS=-Werror" \ KBUILD_CFLAGS_KERNEL=-Wmaybe-uninitialized \ CFLAGS_MODULE=-Wmaybe-uninitialized ... warning: ‘byte_max’ may be used uninitialized [-Wmaybe-uninitialized] warning: ‘blk_type’ may be used uninitialized [-Wmaybe-uninitialized] warning: ‘blk_byte’ may be used uninitialized [-Wmaybe-uninitialized] Although the caller of handle_blkmsg_req() always provides a req.type that is handled by the switch, the compiler cannot guarantee this. Add a default case to the switch statement to handle an invalid req.type. Fixes: 673184a2a58f ("crypto: qat - introduce support for PFVF block messages") Signed-off-by: Giovanni Cabiddu Reviewed-by: Ahsan Atta Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- .../crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c b/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c index 388e58bcbcaf2..4a1ea3e720329 100644 --- a/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c +++ b/drivers/crypto/intel/qat/qat_common/adf_pfvf_pf_proto.c @@ -148,6 +148,16 @@ static struct pfvf_message handle_blkmsg_req(struct adf_accel_vf_info *vf_info, blk_byte = FIELD_GET(ADF_VF2PF_SMALL_BLOCK_BYTE_MASK, req.data); byte_max = ADF_VF2PF_SMALL_BLOCK_BYTE_MAX; break; + default: + dev_err(&GET_DEV(vf_info->accel_dev), + "Invalid BlockMsg type 0x%.4x received from VF%u\n", + req.type, vf_info->vf_nr); + resp.type = ADF_PF2VF_MSGTYPE_BLKMSG_RESP; + resp.data = FIELD_PREP(ADF_PF2VF_BLKMSG_RESP_TYPE_MASK, + ADF_PF2VF_BLKMSG_RESP_TYPE_ERROR) | + FIELD_PREP(ADF_PF2VF_BLKMSG_RESP_DATA_MASK, + ADF_PF2VF_UNSPECIFIED_ERROR); + return resp; } /* Is this a request for CRC or data? */ -- 2.51.0