[linux-next:master 6630/10444] drivers/dma/dw-edma/dw-edma-v0-core.c:211:4-25: opportunity for str_write_read(dir == EDMA_DIR_WRITE)

BCC: [email protected]
CC: [email protected]
TO: Koichiro Den <[email protected]>
CC: Vinod Koul <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   78bc8af4affb9a732504eb22eeac7d1e50883853
commit: c9c25b2f32601409a53845b41183a29c8260f33e [6630/10444] dmaengine: dw-edma: Add core quiesce operations
:::::: branch date: 19 hours ago
:::::: commit date: 9 days ago
config: s390-randconfig-r064-20260730 (https://download.01.org/0day-ci/archive/20260730/[email protected]/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Reported-by: Julia Lawall <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

cocci warnings: (new ones prefixed by >>)
>> drivers/dma/dw-edma/dw-edma-v0-core.c:211:4-25: opportunity for str_write_read(dir == EDMA_DIR_WRITE)

vim +211 drivers/dma/dw-edma/dw-edma-v0-core.c

c9c25b2f326014 Koichiro Den 2026-07-21  199  
c9c25b2f326014 Koichiro Den 2026-07-21  200  static int dw_edma_v0_core_engine_disable(struct dw_edma *dw,
c9c25b2f326014 Koichiro Den 2026-07-21  201  					  enum dw_edma_dir dir)
c9c25b2f326014 Koichiro Den 2026-07-21  202  {
c9c25b2f326014 Koichiro Den 2026-07-21  203  	u32 value;
c9c25b2f326014 Koichiro Den 2026-07-21  204  	int ret;
c9c25b2f326014 Koichiro Den 2026-07-21  205  
c9c25b2f326014 Koichiro Den 2026-07-21  206  	SET_RW_32(dw, dir, engine_en, 0);
c9c25b2f326014 Koichiro Den 2026-07-21  207  	ret = read_poll_timeout(GET_RW_32, value, !(value & BIT(0)), 100,
c9c25b2f326014 Koichiro Den 2026-07-21  208  				200000, false, dw, dir, engine_en);
c9c25b2f326014 Koichiro Den 2026-07-21  209  	if (ret)
c9c25b2f326014 Koichiro Den 2026-07-21  210  		dev_warn(dw->chip->dev, "%s engine did not stop within 200ms\n",
c9c25b2f326014 Koichiro Den 2026-07-21 @211  			 dir == EDMA_DIR_WRITE ? "write" : "read");
c9c25b2f326014 Koichiro Den 2026-07-21  212  
c9c25b2f326014 Koichiro Den 2026-07-21  213  	return ret;
c9c25b2f326014 Koichiro Den 2026-07-21  214  }
c9c25b2f326014 Koichiro Den 2026-07-21  215  

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