Subject: + arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn.patch added to -mm tree To: akpm@xxxxxxxxxxxxxxxxxxxx,fabf@xxxxxxxxx,gxt@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Mon, 12 May 2014 13:28:54 -0700 The patch titled Subject: arch/unicore32/mm/ioremap.c: return NULL on invalid pfn has been added to the -mm tree. Its filename is arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Subject: arch/unicore32/mm/ioremap.c: return NULL on invalid pfn __uc32_ioremap_pfn_caller() should return NULL when the pfn is found to be invalid. >From a recommendation by Guan Xuetao. Cc: Guan Xuetao <gxt@xxxxxxxxxxxxxxx> Cc: Fabian Frederick <fabf@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/unicore32/mm/ioremap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff -puN arch/unicore32/mm/ioremap.c~arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn arch/unicore32/mm/ioremap.c --- a/arch/unicore32/mm/ioremap.c~arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn +++ a/arch/unicore32/mm/ioremap.c @@ -143,11 +143,13 @@ void __iomem *__uc32_ioremap_pfn_caller( /* * Don't allow RAM to be mapped */ - if (pfn_valid(pfn)) + if (pfn_valid(pfn)) { WARN(1, "BUG: Your driver calls ioremap() on\n" "system memory. This leads to architecturally\n" "unpredictable behaviour, and ioremap() will fail in\n" "the next kernel release. Please fix your driver.\n"); + return NULL; + } type = get_mem_type(mtype); if (!type) _ Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are origin.patch arch-alpha-kernel-systblss-remove-debug-check.patch i-need-old-gcc.patch maintainers-akpm-maintenance.patch kernel-posix-timersc-code-clean-up-checkpatch-fixes.patch input-route-kbd-leds-through-the-generic-leds-layer.patch arch-unicore32-mm-ioremapc-convert-printk-warn_on-to-warn1-fix.patch arch-unicore32-mm-ioremapc-return-null-on-invalid-pfn.patch ocfs2-limit-printk-when-journal-is-aborted-fix.patch ocfs2-do-not-return-dlm_migrate_response_mastery_ref-to-avoid-endlessloop-during-umount.patch mm.patch mm-hugetlbfs-fix-rmapping-for-anonymous-hugepages-with-page_pgoff-v3-fix.patch pagewalk-update-page-table-walker-core-fix-end-address-calculation-in-walk_page_range-fix.patch pagemap-redefine-callback-functions-for-page-table-walker-fix.patch pagewalk-remove-argument-hmask-from-hugetlb_entry-fix-fix.patch mm-introduce-do_shared_fault-and-drop-do_fault-fix-fix.patch mm-compactionc-isolate_freepages_block-small-tuneup.patch mm-huge_memoryc-complete-conversion-to-pr_foo.patch include-linux-mmdebugh-add-vm_warn_on-and-vm_warn_on_once.patch mm-mempool-warn-about-__gfp_zero-usage-fix.patch mm-pass-vm_bug_on-reason-to-dump_page-fix.patch hugetlb-add-support-for-gigantic-page-allocation-at-runtime-checkpatch-fixes.patch mm-page_alloc-do-not-cache-reclaim-distances-fix.patch fs-hugetlbfs-inodec-complete-conversion-to-pr_foo.patch mm-compaction-cleanup-isolate_freepages-fix.patch arc-call-find_vma-with-the-mmap_sem-held-fix.patch mm-vmscan-do-not-throttle-based-on-pfmemalloc-reserves-if-node-has-no-zone_normal-checkpatch-fixes.patch swap-use-bdev_read_page-bdev_write_page-fix.patch mm-update-comment-for-default_max_map_count-fix.patch memcg-fold-mem_cgroup_stolen-fix.patch mm-compaction-embed-migration-mode-in-compact_control-fix.patch mm-mark-remap_file_pages-syscall-as-deprecated-fix.patch mm-replace-remap_file_pages-syscall-with-emulation-fix.patch do_shared_fault-check-that-mmap_sem-is-held.patch kernel-res_counterc-replace-simple_strtoull-by-kstrtoull-fix.patch printk-release-lockbuf_lock-before-calling-console_trylock_for_printk-fix.patch lib-btreec-fix-leak-of-whole-btree-nodes-fix.patch init-mainc-dont-use-pr_debug.patch init-mainc-add-initcall_blacklist-kernel-parameter-fix.patch init-mainc-remove-an-ifdef.patch rtc-rtc-cmos-drivers-char-rtcc-features-for-decstation-support-fix.patch rtc-da9063-rtc-driver-fix.patch hfsplus-fixes-worst-case-unicode-to-char-conversion-of-file-names-and-attributes-fix.patch hfsplus-correct-usage-of-hfsplus_attr_max_strlen-for-non-english-attributes-fix.patch hfsplus-correct-usage-of-hfsplus_attr_max_strlen-for-non-english-attributes-fix-2.patch smp-print-more-useful-debug-info-upon-receiving-ipi-on-an-offline-cpu-fix.patch sysctl-allow-for-strict-write-position-handling-fix-2.patch sysctl-allow-for-strict-write-position-handling-fix.patch sysctl-allow-for-strict-write-position-handling-fix-3.patch fs-pstore-logging-clean-up-fix.patch linux-next.patch linux-next-rejects.patch drivers-gpio-gpio-zevioc-fix-build.patch mm-page_ioc-work-around-gcc-bug.patch kernel-watchdogc-print-traces-for-all-cpus-on-lockup-detection-fix.patch ufs-sb-mutex-merge-mutex_destroy.patch debugging-keep-track-of-page-owners.patch journal_add_journal_head-debug.patch journal_add_journal_head-debug-fix.patch kernel-forkc-export-kernel_thread-to-modules.patch mutex-subsystem-synchro-test-module.patch slab-leaks3-default-y.patch put_bh-debug.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html