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| author | Dan Williams <dan.j.williams@intel.com> | 2009-09-21 09:22:29 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-09-21 09:22:29 -0700 |
| commit | cdef57dbb618608bfffda2fc32c8d0a4012a1d3a (patch) | |
| tree | e58d3301ea4fb264f713c4602c25e6451d4e6707 /drivers/dma | |
| parent | f477f5b3316f39c841aa121a219b82b3a56e7da7 (diff) | |
| download | linux-cdef57dbb618608bfffda2fc32c8d0a4012a1d3a.tar.bz2 | |
ioat3: fix uninitialized var warnings
drivers/dma/ioat/dma_v3.c: In function 'ioat3_prep_memset_lock':
drivers/dma/ioat/dma_v3.c:439: warning: 'fill' may be used uninitialized in this function
drivers/dma/ioat/dma_v3.c:437: warning: 'desc' may be used uninitialized in this function
drivers/dma/ioat/dma_v3.c: In function '__ioat3_prep_xor_lock':
drivers/dma/ioat/dma_v3.c:489: warning: 'xor' may be used uninitialized in this function
drivers/dma/ioat/dma_v3.c:486: warning: 'desc' may be used uninitialized in this function
drivers/dma/ioat/dma_v3.c: In function '__ioat3_prep_pq_lock':
drivers/dma/ioat/dma_v3.c:631: warning: 'pq' may be used uninitialized in this function
drivers/dma/ioat/dma_v3.c:628: warning: 'desc' may be used uninitialized in this function
gcc-4.0, unlike gcc-4.3, does not see that these variables are
initialized before use. Convert the descriptor loops to do-while make
this initialization apparent.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ioat/dma_v3.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c index 3686dddf6bff..35d1e33afd5b 100644 --- a/drivers/dma/ioat/dma_v3.c +++ b/drivers/dma/ioat/dma_v3.c @@ -448,7 +448,8 @@ ioat3_prep_memset_lock(struct dma_chan *c, dma_addr_t dest, int value, /* pass */; else return NULL; - for (i = 0; i < num_descs; i++) { + i = 0; + do { size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log); desc = ioat2_get_ring_ent(ioat, idx + i); @@ -463,7 +464,7 @@ ioat3_prep_memset_lock(struct dma_chan *c, dma_addr_t dest, int value, len -= xfer_size; dest += xfer_size; dump_desc_dbg(ioat, desc); - } + } while (++i < num_descs); desc->txd.flags = flags; desc->len = total_len; @@ -518,7 +519,8 @@ __ioat3_prep_xor_lock(struct dma_chan *c, enum sum_check_flags *result, /* pass */; else return NULL; - for (i = 0; i < num_descs; i += 1 + with_ext) { + i = 0; + do { struct ioat_raw_descriptor *descs[2]; size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log); int s; @@ -546,7 +548,7 @@ __ioat3_prep_xor_lock(struct dma_chan *c, enum sum_check_flags *result, len -= xfer_size; offset += xfer_size; dump_desc_dbg(ioat, desc); - } + } while ((i += 1 + with_ext) < num_descs); /* last xor descriptor carries the unmap parameters and fence bit */ desc->txd.flags = flags; @@ -664,7 +666,8 @@ __ioat3_prep_pq_lock(struct dma_chan *c, enum sum_check_flags *result, /* pass */; else return NULL; - for (i = 0; i < num_descs; i += 1 + with_ext) { + i = 0; + do { struct ioat_raw_descriptor *descs[2]; size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log); @@ -703,7 +706,7 @@ __ioat3_prep_pq_lock(struct dma_chan *c, enum sum_check_flags *result, len -= xfer_size; offset += xfer_size; - } + } while ((i += 1 + with_ext) < num_descs); /* last pq descriptor carries the unmap parameters and fence bit */ desc->txd.flags = flags; |