diff options
| author | Andrew Morton | 2015-11-05 18:50:08 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2015-11-05 19:34:48 -0800 |
| commit | 3acaea6804b3a10e996ce6ebc342089f481e1cdb (patch) | |
| tree | 0103fbea653d35ff36f234feafddde3c134ade0a /mm | |
| parent | 42cb14b110a5698ccf26ce59c4441722605a3743 (diff) | |
mm/cma.c: suppress warning
mm/cma.c: In function 'cma_alloc':
mm/cma.c:366: warning: 'pfn' may be used uninitialized in this function
The patch actually improves the tracing a bit: if alloc_contig_range()
fails, tracing will display the offending pfn rather than -1.
Cc: Stefan Strogin <stefan.strogin@gmail.com>
Cc: Michal Nazarewicz <mpn@google.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/cma.c | 6 |
1 files changed, 4 insertions, 2 deletions
@@ -363,7 +363,9 @@ err: */ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align) { - unsigned long mask, offset, pfn, start = 0; + unsigned long mask, offset; + unsigned long pfn = -1; + unsigned long start = 0; unsigned long bitmap_maxno, bitmap_no, bitmap_count; struct page *page = NULL; int ret; @@ -418,7 +420,7 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align) start = bitmap_no + mask + 1; } - trace_cma_alloc(page ? pfn : -1UL, page, count, align); + trace_cma_alloc(pfn, page, count, align); pr_debug("%s(): returned %p\n", __func__, page); return page; |