The patch titled
Subject: io-mapping-indicate-mapping-failure-fix
has been added to the -mm tree. Its filename is
io-mapping-indicate-mapping-failure-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/io-mapping-indicate-mapping-failure-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/io-mapping-indicate-mapping-failure-fix.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/process/submit-checklist.rst 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: io-mapping-indicate-mapping-failure-fix
detact ioremap_wc() errors earlier
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: "Michael J. Ruhl" <michael.j.ruhl@xxxxxxxxx>
Cc: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/io-mapping.h | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
--- a/include/linux/io-mapping.h~io-mapping-indicate-mapping-failure-fix
+++ a/include/linux/io-mapping.h
@@ -107,9 +107,12 @@ io_mapping_init_wc(struct io_mapping *io
resource_size_t base,
unsigned long size)
{
+ iomap->iomem = ioremap_wc(base, size);
+ if (!iomap->iomem)
+ return NULL;
+
iomap->base = base;
iomap->size = size;
- iomap->iomem = ioremap_wc(base, size);
#if defined(pgprot_noncached_wc) /* archs can't agree on a name ... */
iomap->prot = pgprot_noncached_wc(PAGE_KERNEL);
#elif defined(pgprot_writecombine)
@@ -118,7 +121,7 @@ io_mapping_init_wc(struct io_mapping *io
iomap->prot = pgprot_noncached(PAGE_KERNEL);
#endif
- return iomap->iomem ? iomap : NULL;
+ return iomap;
}
static inline void
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-close-race-between-munmap-and-expand_upwards-downwards-fix.patch
mm-hugetlb-avoid-hardcoding-while-checking-if-cma-is-enabled-fix.patch
io-mapping-indicate-mapping-failure-fix.patch
mm.patch
mm-handle-page-mapping-better-in-dump_page-fix.patch
mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix.patch
mm-memcg-percpu-account-percpu-memory-to-memory-cgroups-fix-fix.patch
mm-thp-replace-http-links-with-https-ones-fix.patch
mm-vmstat-add-events-for-thp-migration-without-split-fix.patch
mmhwpoison-rework-soft-offline-for-in-use-pages-fix.patch
mm-vmstat-fix-proc-sys-vm-stat_refresh-generating-false-warnings-fix-2.patch
linux-next-rejects.patch
mm-migrate-clear-__gfp_reclaim-to-make-the-migration-callback-consistent-with-regular-thp-allocations-fix.patch
mm-madvise-introduce-process_madvise-syscall-an-external-memory-hinting-api-fix.patch
mm-madvise-introduce-process_madvise-syscall-an-external-memory-hinting-api-fix-2.patch
kernel-forkc-export-kernel_thread-to-modules.patch
