Linux Remote Processor Subsystem development
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* [PATCH] remoteproc: rcar_rproc: silince address space sparse warning
@ 2022-08-08  1:16 Kefeng Wang
  2022-08-08  1:16 ` Kefeng Wang
  2022-08-23 19:26 ` Mathieu Poirier
  0 siblings, 2 replies; 4+ messages in thread
From: Kefeng Wang @ 2022-08-08  1:16 UTC (permalink / raw)
  To: Mathieu Poirier, Julien Massot, Bjorn Andersson, linux-remoteproc
  Cc: Geert Uytterhoeven, linux-kernel, rmk+kernel, Kefeng Wang,
	kernel test robot

Fix sparse warnings,
   drivers/remoteproc/st_remoteproc.c:98:12: sparse: sparse: incorrect type in assignment (different address spaces) @@
	   expected void *va @@     got void [noderef] __iomem * @@
   drivers/remoteproc/st_remoteproc.c:98:12: sparse:     expected void *va
   drivers/remoteproc/st_remoteproc.c:98:12: sparse:     got void [noderef] __iomem *
   ...
   drivers/remoteproc/st_remoteproc.c:114:20: sparse:     expected void volatile [noderef] __iomem *io_addr
   drivers/remoteproc/st_remoteproc.c:114:20: sparse:     got void *va

Add __iomem to io address space 'va' to fix it.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
---
note: the commit d803336abdbc "(ARM: mm: kill unused runtime hook arch_iounmap())"
won't introduce the warning, but lkp report issue to me many times,
let's fix it.

 drivers/remoteproc/rcar_rproc.c | 2 +-
 include/linux/remoteproc.h      | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/remoteproc/rcar_rproc.c b/drivers/remoteproc/rcar_rproc.c
index aa86154109c7..e3363a4cde0a 100644
--- a/drivers/remoteproc/rcar_rproc.c
+++ b/drivers/remoteproc/rcar_rproc.c
@@ -22,7 +22,7 @@ static int rcar_rproc_mem_alloc(struct rproc *rproc,
 				 struct rproc_mem_entry *mem)
 {
 	struct device *dev = &rproc->dev;
-	void *va;
+	void __iomem *va;
 
 	dev_dbg(dev, "map memory: %pa+%zx\n", &mem->dma, mem->len);
 	va = ioremap_wc(mem->dma, mem->len);
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 7c943f0a2fc4..c0c950cf7d72 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -330,7 +330,7 @@ struct rproc;
  * @alloc: specific memory allocator function
  */
 struct rproc_mem_entry {
-	void *va;
+	void __iomem *va;
 	bool is_iomem;
 	dma_addr_t dma;
 	size_t len;
-- 
2.35.3


^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2022-08-23 20:09 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2022-08-08  1:16 [PATCH] remoteproc: rcar_rproc: silince address space sparse warning Kefeng Wang
2022-08-08  1:16 ` Kefeng Wang
2022-08-08  1:12   ` Kefeng Wang
2022-08-23 19:26 ` Mathieu Poirier

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