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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>
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parent
f477f5b331
commit
cdef57dbb6
1 changed files with 9 additions and 6 deletions
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@ -448,7 +448,8 @@ ioat3_prep_memset_lock(struct dma_chan *c, dma_addr_t dest, int value,
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/* pass */;
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else
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return NULL;
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for (i = 0; i < num_descs; i++) {
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i = 0;
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do {
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size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log);
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desc = ioat2_get_ring_ent(ioat, idx + i);
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@ -463,7 +464,7 @@ ioat3_prep_memset_lock(struct dma_chan *c, dma_addr_t dest, int value,
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len -= xfer_size;
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dest += xfer_size;
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dump_desc_dbg(ioat, desc);
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}
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} while (++i < num_descs);
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desc->txd.flags = flags;
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desc->len = total_len;
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@ -518,7 +519,8 @@ __ioat3_prep_xor_lock(struct dma_chan *c, enum sum_check_flags *result,
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/* pass */;
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else
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return NULL;
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for (i = 0; i < num_descs; i += 1 + with_ext) {
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i = 0;
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do {
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struct ioat_raw_descriptor *descs[2];
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size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log);
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int s;
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@ -546,7 +548,7 @@ __ioat3_prep_xor_lock(struct dma_chan *c, enum sum_check_flags *result,
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len -= xfer_size;
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offset += xfer_size;
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dump_desc_dbg(ioat, desc);
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}
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} while ((i += 1 + with_ext) < num_descs);
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/* last xor descriptor carries the unmap parameters and fence bit */
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desc->txd.flags = flags;
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@ -664,7 +666,8 @@ __ioat3_prep_pq_lock(struct dma_chan *c, enum sum_check_flags *result,
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/* pass */;
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else
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return NULL;
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for (i = 0; i < num_descs; i += 1 + with_ext) {
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i = 0;
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do {
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struct ioat_raw_descriptor *descs[2];
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size_t xfer_size = min_t(size_t, len, 1 << ioat->xfercap_log);
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@ -703,7 +706,7 @@ __ioat3_prep_pq_lock(struct dma_chan *c, enum sum_check_flags *result,
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len -= xfer_size;
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offset += xfer_size;
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}
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} while ((i += 1 + with_ext) < num_descs);
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/* last pq descriptor carries the unmap parameters and fence bit */
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desc->txd.flags = flags;
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