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Fri, 24 Jul 2026 10:29:03 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 1 X-BIZMAIL-ID: 4050712520101716894 EX-QQ-RecipientCnt: 26 From: Gou Hao To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, bharat@chelsio.com, jgg@ziepe.ca, leon@kernel.org, akpm@linux-foundation.org, gouhao@uniontech.com, namcao@linutronix.de, ynorov@nvidia.com, sshegde@linux.ibm.com, nilay@linux.ibm.com, clg@kaod.org Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-mm@kvack.org, gouhaojake@163.com, kernel@uniontech.com Subject: [PATCH v2 2/6] powerpc/xive: add error return value to xive_smp_probe() Date: Fri, 24 Jul 2026 10:28:47 +0800 Message-Id: <20260724022851.466017-3-gouhao@uniontech.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20260724022851.466017-1-gouhao@uniontech.com> References: <20260724022851.466017-1-gouhao@uniontech.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpip:uniontech.com:qybglogicsvrgz:qybglogicsvrgz5b-2 X-QQ-XMAILINFO: NjvKFBGFVoSK9xgt87HbcH8Z1kiv7SvOxVi9E9HTxW16wON0oiLoRDhR K9cpYkRkKAhYVveaNf1KXAiaq/mlZ31D3ZJywgLf0uFbssx8e0jE4Czgvn/cmi3Plgie1cp JR36G//kRbDr6Hzk6hV7dV/o7lOatPmd3hG4kxSOWylS6e2Jo2iKe+R4g0qLvVL2xozERNy ixetEfJFYVD2jK2JnBf/ez8s+ONaXhZ0WN0CkDrsv4aouXTt3L+pOGKWulmNYItV3udYlST 6z2vDC5BNgXaqHcQ3GmS937wkCcHq2rbiD0zLHSH9c/TsrTJw1v6D7FsO2Dx2c0hHRw7+da uILzYcB8ALLYix09oRoSAWU4oikpl/Dw8tyUp1lW7C7NvAjIxm5YtQVbTSVBLThuSfUBNk/ e3Zl+75dYXZZKsL/II9yNKH+EOsgdb9a/YwmVVSXGA5JT6b3tYjmYY3WWNTA63qVwMzAnu3 tV0iYXo9kDwXeQpS5dTjfJVPpM+HlppWucCq5EWcFmTwlMri9cFb+8rYenUXfInPBFqnsFy qahPGA1wKLwTBy21U44edK7QR5o+bRPKZBrt1w8zAKhLaOxkuiHNw8xqaAYNQkSoFVUrGRO bJ+G45c9bpfy+zU6TxKtK48lW/ZPwhmOUARp9UXmg0EJeDYcTarmyM8tG93YoYvPDnJ4TJL 9CP8VZUtXbTlAXX1jpWIeZ2Qlr/JWywphq2ihhlnuPKJXcRUih+8WCwW40cWJiIWzlWOskv i6T8io3pTSpYg7ReYHGi0MNZlLrRN/ivCaV92YxVtGljdNDDtCrKzSAU7GeJuDDTLq6pzD5 CDHH2hZMc4bcSZwIWK6hSzq+BerIdxWGv5HPbM41+oK0Tn2Mz4xxORhiihowBU7SIxoy012 OvRw18xTBe3nUs10qNpbIwukYZf5ZELlGPeKV6Nrwt4ZHv4G+XSSGODB0KCENJJYdQ4i5OG mi/09LZSYk3zPokU8beAKnPI9gFZpDh07YHr+qcNXFmGRYzvftAtWd4KlZ4fTy6zhjHoRfn hlFemawWJgeDLuVd4JslrCQGu+ebbJ3eEIVAHi9BN2YMJtbOco X-QQ-XMRINFO: NyFYKkN4Ny6FuXrnB5Ye7Aabb3ujjtK+gg== X-QQ-RECHKSPAM: 0 X-Rspam-User: X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 183A61A0006 X-Stat-Signature: 8oh7s8m1pkniun66jtckg9h9mj7rjach X-HE-Tag: 1784860205-598182 X-HE-Meta: U2FsdGVkX1/ULAi9HeNbge9jRmGjJOxPW6XjYgNtFvmVxdww605+Prw1/R99FM7HBSQeBcp8fMaCZOsodZkK2DYLhItWj1HwIa8HdAStaNl0y5sTp/qz0M9lwApg0FewBNGycZSAT2IsHGwr0A3V3FZuBYQ/49Bo1WxrMOC5sYiooDsrVP1Lx3THGUemmqoCSV7VUzexa5zUdRPS3MXLJ4WXZfIkjhCaIoCff4qe2OEpXCvCrjKt7Oe3ZBtM+AW4PFBoHwbpKBZ+cpLp2UW64JNdJ3TbYY4j3974Qr/MSY5+1khbxKbL/sprh2M1AO1C4SGMvvoz7kM+QWmwwgpS85buTVpfvpivXrsBvcZCtkzdtejYlaX+PUka6IZVRzuHTWKOQrsw24Ul7i94PvThM9JsyKyVzXWbBDbjuOFGK/Njjt0Cx5XFDjLLwjayxGy3ehZHtr7hnQBZVDNSuU+3peSlvwS82Ody9e08c2Le+2M+r28CL/dn+JpVR8zePrPwyxxkaGsD7rXsJ2wAwOAMlQthTGC/G/ec1flnTC3z4tN2FEYyUud//hggpQkAtT85d6M5pgQBTtPYyqGdULvaEJ6sVPym5khdNbivKTSzk7+S3Z0JtpbxaNQwn0R9mscQYi0HnISLf8AtJP4/o0b/YnrSUD+cmXaiCry1deK4Hy59D45Hku3R3hZf6EiX2VaAs1TZErKe6DFqRhL64cFLblFpTKEeVHlr24fcrWqNaAEt/GyIElbfSPhXVDr1ZWYbZrtf96dXEZoM1AnamdMTMnNo4qZbxeM8RHmkqh6viPiuQEEnlfdzZ5iI+SJYB76ZCOMgv5qOoAwIHnDPp9WOGkXs7fXfD4bc0EUJNRVmtEO29omgN9n5XaMWCRIVjXJeiUuEVkBF/kpooeb4+IKm3WUX+HguGPJglOXRno75OBXEZGHxUxgtgg3b2HUvV+DKyVD5bUCayFtXEiHF9BW kPg5pfIV 2bds3H+Xvbste9QboMlflC3u+kO+8lnnzJYO+cahi0P61YOTXTPbauEKL5HAo0PwbUGJKWgZEMtyFXGLSmnU7BS/CDYrHCCXAzB5LZ6S2pm/M5dbfN7LlfElCCTP4sROAwr4sMYHhVksW6pvyNdGZ4BPhbXG4JMQxLtRcDwgnkYn1NWqq3fsbeE+9UQOCGqFY1eKSyglPJVbfxlg2o/uRoyawW6bJOLgbhvDZ1Ss6aFE5QitXhYGM8TbFRBOkPimRODJyG6IgvLtDT6rBCtopbHrc4BjhNHVTx9AurgJAq9D8lbek4zEKYKkxOe6nIrefnvgwnbOZxLMMB6RjRKrxZlYn7OL5PNY0K4dhNgWhUUZZ4es1db7xRMxWAkcYdrej5/AZhVB7xupr5+k= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: xive_smp_probe() calls xive_init_ipis() which can fail, but its return value is currently ignored. Change xive_smp_probe() to return int so that errors can be propagated to callers. This is a preparatory patch for the next one. No functional change yet; the return value is always 0 at this point. Signed-off-by: Gou Hao Reviewed-by: Wentao Guan Reviewed-by: jiazhenyuan --- arch/powerpc/include/asm/xive.h | 4 ++-- arch/powerpc/sysdev/xive/common.c | 4 +++- 2 files changed, 5 insertions(+), 3 deletions(-) diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h index efb0f5effcc69..4e3e3358993c0 100644 --- a/arch/powerpc/include/asm/xive.h +++ b/arch/powerpc/include/asm/xive.h @@ -91,7 +91,7 @@ static inline bool xive_enabled(void) { return __xive_enabled; } bool xive_spapr_init(void); bool xive_native_init(void); -void xive_smp_probe(void); +int xive_smp_probe(void); int xive_smp_prepare_cpu(unsigned int cpu); void xive_smp_setup_cpu(void); void xive_smp_disable_cpu(void); @@ -153,7 +153,7 @@ static inline bool xive_enabled(void) { return false; } static inline bool xive_spapr_init(void) { return false; } static inline bool xive_native_init(void) { return false; } -static inline void xive_smp_probe(void) { } +static inline int xive_smp_probe(void) { return -EINVAL; } static inline int xive_smp_prepare_cpu(unsigned int cpu) { return -EINVAL; } static inline void xive_smp_setup_cpu(void) { } static inline void xive_smp_disable_cpu(void) { } diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index f2904a5c2b7bf..f9a1229cede73 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1254,7 +1254,7 @@ noinstr static void xive_cleanup_cpu_ipi(unsigned int cpu, struct xive_cpu *xc) xive_ops->put_ipi(cpu, xc); } -void __init xive_smp_probe(void) +int __init xive_smp_probe(void) { smp_ops->cause_ipi = xive_cause_ipi; @@ -1263,6 +1263,8 @@ void __init xive_smp_probe(void) /* Allocate and setup IPI for the boot CPU */ xive_setup_cpu_ipi(smp_processor_id()); + + return 0; } #endif /* CONFIG_SMP */ -- 2.20.1