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GET /api/1.1/patches/2227705/?format=api
{ "id": 2227705, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2227705/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260424054742.45832-3-mkchauras@gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.1/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260424054742.45832-3-mkchauras@gmail.com>", "date": "2026-04-24T05:47:37", "name": "[V13,2/7] dma-resv: Fix undefined symbol when CONFIG_DMA_SHARED_BUFFER is disabled", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "8d61622f50c4bdbc989a99250d879e9770aed298", "submitter": { "id": 92575, "url": "http://patchwork.ozlabs.org/api/1.1/people/92575/?format=api", "name": "Mukesh Kumar Chaurasiya", "email": "mkchauras@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260424054742.45832-3-mkchauras@gmail.com/mbox/", "series": [ { "id": 501303, "url": "http://patchwork.ozlabs.org/api/1.1/series/501303/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501303", "date": "2026-04-24T05:47:35", "name": "Rust support for powerpc", "version": 13, "mbox": "http://patchwork.ozlabs.org/series/501303/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2227705/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2227705/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20036-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=K9WghBJM;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=112.213.38.117; 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CONFIG_DEBUG_MUTEXES=y is enabled\n2. CONFIG_DMA_SHARED_BUFFER is not enabled\n3. dma_resv_reset_max_fences() is declared in the header when\n CONFIG_DEBUG_MUTEXES is set\n4. But the function is only compiled in drivers/dma-buf/dma-resv.c,\n which is only built when CONFIG_DMA_SHARED_BUFFER is enabled\n5. Rust helpers call dma_resv_unlock() which calls\n dma_resv_reset_max_fences(), causing an undefined symbol\n\nFix this by making the function declaration conditional on both\nCONFIG_DEBUG_MUTEXES and CONFIG_DMA_SHARED_BUFFER. When either is\ndisabled, use a static inline stub instead.\n\nFixes: 0c6b522abc2a (\"dma-buf: cleanup dma-resv shared fence debugging a bit v2\")\nSigned-off-by: Mukesh Kumar Chaurasiya (IBM) <mkchauras@gmail.com>\n---\n include/linux/dma-resv.h | 2 +-\n 1 file changed, 1 insertion(+), 1 deletion(-)", "diff": "diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h\nindex c5ab6fd9ebe8..23c8db0b5214 100644\n--- a/include/linux/dma-resv.h\n+++ b/include/linux/dma-resv.h\n@@ -311,7 +311,7 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)\n #define dma_resv_held(obj) lockdep_is_held(&(obj)->lock.base)\n #define dma_resv_assert_held(obj) lockdep_assert_held(&(obj)->lock.base)\n \n-#ifdef CONFIG_DEBUG_MUTEXES\n+#if IS_ENABLED(CONFIG_DEBUG_MUTEXES) && IS_ENABLED(CONFIG_DMA_SHARED_BUFFER)\n void dma_resv_reset_max_fences(struct dma_resv *obj);\n #else\n static inline void dma_resv_reset_max_fences(struct dma_resv *obj) {}\n", "prefixes": [ "V13", "2/7" ] }