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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Heiko Carstens , Vasily Gorbik , Alexander Gordeev Subject: [PATCH 2/2] ptp: ptp_s390: Add missing facility check Date: Tue, 14 Jul 2026 10:49:21 +0200 Message-ID: <20260714084921.3926697-3-svens@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260714084921.3926697-1-svens@linux.ibm.com> References: <20260714084921.3926697-1-svens@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: hMAd7vudzFfYgF5Bh_2kmfhcsYG2GRc6 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE0MDA5MCBTYWx0ZWRfXxSTVWRkQrccF OOi8oJJJ03EO6o4wCJHFgJ3NPae2ZYNdzLnOqm4g10/xKe6kecmUinqUAPJvvdLl491AaDHMCAB pR1V4wAXRPxAtAdLRDxYz0J/A5sAV3Q= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE0MDA5MCBTYWx0ZWRfXzFYD02nb/0s/ 2zE7g0c7QwBl+8w5MKDJyt3Zh/R+WBAE1SlDDsrJ6YISaTdLfZ/Qk+y319rnuP0eJOUIAznmT/R lXSR1unacRyev7sRtX7tU4hqwXAZ6pvZjGJu4dhi3zFDrfpGenAIVHNgUqvIsNQ8cUBfr+93XXo 40XjFSLmUkPHRsU8U+7nFmt30/Dm6ZxxoNi5It0BWE+Pltc/AfVfzghN/335DfVqsYxYXSe9f10 R4T8mm4L2gGY6qBOossfRMO5bW9KDTJlqd0LB8512yZpYvVSh7+QXmiIB8srKVL3gNAfXjF9Ufc Anq5hKjliXGO3XTQJ201XtyqSUS2uOa26pvuRJ/WHumGyQDw9gH3T63Fv/Wl211kYBO5RtL5Vzs X3MFYYz0gGCgSLGBRtC/7UtKAdM4QK+yJfvAfyQSaQE67IKjjtRFBXszHRUbydhCGd8jemZBsgD ekdIavh77gEefCZP1iQ== X-Authority-Analysis: v=2.4 cv=XbS5Co55 c=1 sm=1 tr=0 ts=6a55f81b cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=VwQbUJbxAAAA:8 a=15N3dO80ItH7txqtrAgA:9 X-Proofpoint-ORIG-GUID: 40Dz3stgneQ2z818DDZ44weEwNm0e5bc X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-14_02,2026-07-10_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 suspectscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 malwarescore=0 impostorscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607140090 Only register the physical clock when facility 28 is installed. Fixes: 2d7de7a3010d ("s390/time: Add PtP driver") Signed-off-by: Sven Schnelle Cc: stable@kernel.org --- drivers/ptp/ptp_s390.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/ptp/ptp_s390.c b/drivers/ptp/ptp_s390.c index 7299c3aae65f..3ea94648cdde 100644 --- a/drivers/ptp/ptp_s390.c +++ b/drivers/ptp/ptp_s390.c @@ -108,6 +108,9 @@ static __init int ptp_s390_init(void) if (IS_ERR(ptp_stcke_clock)) return PTR_ERR(ptp_stcke_clock); =20 + if (!test_facility(28)) + return 0; + ptp_qpt_clock =3D ptp_clock_register(&ptp_s390_qpt_info, NULL); if (IS_ERR(ptp_qpt_clock)) { ptp_clock_unregister(ptp_stcke_clock); @@ -118,7 +121,8 @@ static __init int ptp_s390_init(void) =20 static __exit void ptp_s390_exit(void) { - ptp_clock_unregister(ptp_qpt_clock); + if (ptp_qpt_clock) + ptp_clock_unregister(ptp_qpt_clock); ptp_clock_unregister(ptp_stcke_clock); } =20 --=20 2.53.0