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Mon, 14 Sep 2026 12:14:07 +0000 (GMT) Received: from osiris (unknown [9.111.83.12]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 14 Sep 2026 12:14:07 +0000 (GMT) Date: Mon, 14 Sep 2026 14:14:06 +0200 From: Heiko Carstens To: Thomas Richter Cc: linux-s390@vger.kernel.org, japo@linux.ibm.com, sumanthk@linux.ibm.com Subject: Re: [PATCH] s390/pai: Simplify pai_init() and always return -ENODEV on failure Message-ID: <20260914121406.39845Aa3-hca@linux.ibm.com> References: <20260903081557.2023814-1-tmricht@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260903081557.2023814-1-tmricht@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTE0MDE3MSBTYWx0ZWRfXw4OHDaUHZdxP nJTdA3X5VQXrE3RtT7oyNV/u7s5802ewn4A/vzkhb6x6DWcpcpOOEg+An0+Zw8OO7/KrVj+0eOg h2S1svbm348Ks2nClDg/xEiY1gmfvKY= X-Proofpoint-ORIG-GUID: --O58DEKFxPDI5Wq8pGlEvs_Bz038mI- X-Proofpoint-GUID: --O58DEKFxPDI5Wq8pGlEvs_Bz038mI- X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTE0MDE3MSBTYWx0ZWRfX3sivihC4S5ip fO6EWTlcz07914LUXp6aSH/2XBDS1VXlRVNjitH8ZOcbfFowRKZHQJneN6sUEd6nIRPwaaHfJP+ dW8tTZC8E5n01PJFMg3uVphVmwBzSBJjGNNPnOhH5Adt35OZRieFjCLfMA4J5NlVCX3qhrWZ4F9 fn5Q3Xc82fTcGzuVxbh5qVHL3y5q4bDAauIcL5+3ur9rVwQmvK9fbFMhr7XEKZo463/T375mSL/ yJ/LDLw6THI85YiOocVPjOWAsIDll7Wzxivoryggf/Ax1BfgikdXSMV5MzwsuPorRKF8Hc2IgIR mQn9CX8LmxEkJ8jhtUu5hzaRfzy0GIQcN1z3Lg4LmnO9Dw+IeHobwSmfaorQDHHhf9iuelGH0bd PL5QhJDXOUnhI9rTJktvQkwG3GSaRt8+8eEEE23vapWlIrcj2v6cXnY8VI64NXd+swQxy87ZIEL ViifJ7JqaRbXmcTVbyg== X-Authority-Analysis: v=2.4 cv=F+7C5ahN c=1 sm=1 tr=0 ts=6aa7e513 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=oWIZ3QBRBYHYsP2WJVoA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-09-14_03,2026-09-13_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 phishscore=0 clxscore=1015 malwarescore=0 lowpriorityscore=0 bulkscore=0 spamscore=0 impostorscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609140171 On Thu, Sep 03, 2026 at 10:15:57AM +0200, Thomas Richter wrote: > Code simplification and remove variable state. > Return -ENODEV in all failures to indicate the PAI PMUs are not > available. Why do you want to hide different error / return codes? That makes debugging in case of an error more difficult.