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(unknown [10.28.34.254]) by maili.marvell.com (Postfix) with ESMTP id C32F23F704D; Thu, 22 May 2025 03:06:33 -0700 (PDT) From: Bharat Bhushan To: , , , , , , , , CC: Bharat Bhushan Subject: [PATCH 1/4 v4] crypto: octeontx2: add timeout for load_fvc completion poll Date: Thu, 22 May 2025 15:36:24 +0530 Message-ID: <20250522100627.175210-2-bbhushan2@marvell.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250522100627.175210-1-bbhushan2@marvell.com> References: <20250522100627.175210-1-bbhushan2@marvell.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: WPRcD1qQenSbEK8WwlHzTZuYqVouYnpA X-Authority-Analysis: v=2.4 cv=HfgUTjE8 c=1 sm=1 tr=0 ts=682ef72d cx=c_pps a=rEv8fa4AjpPjGxpoe8rlIQ==:117 a=rEv8fa4AjpPjGxpoe8rlIQ==:17 a=dt9VzEwgFbYA:10 a=M5GUcnROAAAA:8 a=dP9LQboaRqI6G61vZ2MA:9 a=OBjm3rFKGHvpk9ecZwUJ:22 X-Proofpoint-ORIG-GUID: WPRcD1qQenSbEK8WwlHzTZuYqVouYnpA X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTIyMDEwMSBTYWx0ZWRfX2DghlUyE8BTy Nac/WmWvvpsFo6KRa+rf9gBiV/8kGkbhvZ+CJHXSuwFxcttV6GOwYATnkgCKP1JFECbylwcHraz g/f6ihCXsS2LQRFXkVhHpjGrpXzRs5EzB7j6KDKpKeRXjYBJ2+BaklHBRs2wHpVaJjZELWYRVF4 jHrLDcL/brcmYcFml9umEsAVokNxmXbJJ4M18AHYP+H7Xdy4qpc7At6BW13daMEmHFGir/olvAe whq+FK9VOsECDzSsDZdu94WLQdEek1SL0GGNHE5aoqiC7ZFsNSNFaV5q8hTL7JV+YITWxr/Jg1F tWb8OTVhn6K5V1AfytAxGyPqLN0LmBh4Dw6HqoMl6GOK4IZgWF0Qs/sv7vyJGmXYqg5GLH0ltmr CmhyX+rBPJZnyl0eKzslcPtW86NRy/QU6ajcqJOnwacpyVro4C2zq6wP3Qv7yGDiiyJmqOL1 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-22_05,2025-05-22_01,2025-03-28_01 Content-Type: text/plain; charset="utf-8" Adds timeout to exit from possible infinite loop, which polls on CPT instruction(load_fvc) completion. Signed-off-by: Srujana Challa Signed-off-by: Bharat Bhushan --- .../crypto/marvell/octeontx2/otx2_cptpf_ucode.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c b/drivers/= crypto/marvell/octeontx2/otx2_cptpf_ucode.c index 42c5484ce66a..3a818ac89295 100644 --- a/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c +++ b/drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c @@ -1494,6 +1494,7 @@ int otx2_cpt_discover_eng_capabilities(struct otx2_cp= tpf_dev *cptpf) dma_addr_t rptr_baddr; struct pci_dev *pdev; u32 len, compl_rlen; + int timeout =3D 10000; int ret, etype; void *rptr; =20 @@ -1556,16 +1557,27 @@ int otx2_cpt_discover_eng_capabilities(struct otx2_= cptpf_dev *cptpf) etype); otx2_cpt_fill_inst(&inst, &iq_cmd, rptr_baddr); lfs->ops->send_cmd(&inst, 1, &cptpf->lfs.lf[0]); + timeout =3D 10000; =20 while (lfs->ops->cpt_get_compcode(result) =3D=3D - OTX2_CPT_COMPLETION_CODE_INIT) + OTX2_CPT_COMPLETION_CODE_INIT) { cpu_relax(); + udelay(1); + timeout--; + if (!timeout) { + ret =3D -ENODEV; + cptpf->is_eng_caps_discovered =3D false; + dev_warn(&pdev->dev, "Timeout on CPT load_fvc completion poll\n"); + goto error_no_response; + } + } =20 cptpf->eng_caps[etype].u =3D be64_to_cpup(rptr); } - dma_unmap_single(&pdev->dev, rptr_baddr, len, DMA_BIDIRECTIONAL); cptpf->is_eng_caps_discovered =3D true; =20 +error_no_response: + dma_unmap_single(&pdev->dev, rptr_baddr, len, DMA_BIDIRECTIONAL); free_result: kfree(result); lf_cleanup: --=20 2.34.1