tree: git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/slave-dma.git for-linus
head: fe90ced9e9d7bdba75ccae83100ae656807a6261
commit: 9f2fd0dfa594d857fbdaeda523ff7a46f16567f5 [26/28] dmaengine: Add support for APM X-Gene SoC DMA engine driver
reproduce:
# apt-get install sparse
git checkout 9f2fd0dfa594d857fbdaeda523ff7a46f16567f5
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/dma/xgene-dma.c:396:25: sparse: incorrect type in assignment (different base types)
drivers/dma/xgene-dma.c:396:25: expected unsigned long long [unsigned] [long] [long long] [usertype] <noident>
drivers/dma/xgene-dma.c:396:25: got restricted __le64 [usertype] <noident>
>> drivers/dma/xgene-dma.c:818:26: sparse: cast to restricted __le64
>> drivers/dma/xgene-dma.c:818:26: sparse: cast to restricted __le64
>> drivers/dma/xgene-dma.c:1626:5: sparse: symbol 'xgene_dma_init_ring_mngr' was not declared. Should it be static?
drivers/dma/xgene-dma.c:2088:1: sparse: symbol '__UNIQUE_ID_author__COUNTER__' has multiple initializers (originally initialized at drivers/dma/xgene-dma.c:2087)
Please review and possibly fold the followup patch.
vim +396 drivers/dma/xgene-dma.c
380 [ERR_DESC_SRC_INT] = "HFB reading src link address error",
381 };
382
383 static bool is_pq_enabled(struct xgene_dma *pdma)
384 {
385 u32 val;
386
387 val = ioread32(pdma->csr_efuse + XGENE_SOC_JTAG1_SHADOW);
388 return !(val & XGENE_DMA_PQ_DISABLE_MASK);
389 }
390
391 static void xgene_dma_cpu_to_le64(u64 *desc, int count)
392 {
393 int i;
394
395 for (i = 0; i < count; i++)
> 396 desc[i] = cpu_to_le64(desc[i]);
397 }
398
399 static u16 xgene_dma_encode_len(u32 len)
400 {
401 return (len < XGENE_DMA_MAX_BYTE_CNT) ?
402 len : XGENE_DMA_16K_BUFFER_LEN_CODE;
403 }
404
---
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