The sparse tool complains about the attribute conversion between a _iomem void * and a void *:
stm32_rproc.c:122:12: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *va @@ got void [noderef] __iomem * @@ stm32_rproc.c:122:12: sparse: expected void *va stm32_rproc.c:122:12: sparse: got void [noderef] __iomem * Add '__force' to explicitly specify that the cast is intentional. This conversion is necessary to cast to virtual addresses pointer,used, by the remoteproc core. Reported-by: kernel test robot <l...@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202312150052.hcinklqb-...@intel.com/ Fixes: 13140de09cc2 ("remoteproc: stm32: add an ST stm32_rproc driver") Signed-off-by: Arnaud Pouliquen <arnaud.pouliq...@foss.st.com> --- drivers/remoteproc/stm32_rproc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c index 4f469f0bcf8b..2c28635219eb 100644 --- a/drivers/remoteproc/stm32_rproc.c +++ b/drivers/remoteproc/stm32_rproc.c @@ -120,7 +120,7 @@ static int stm32_rproc_mem_alloc(struct rproc *rproc, void *va; dev_dbg(dev, "map memory: %pad+%zx\n", &mem->dma, mem->len); - va = ioremap_wc(mem->dma, mem->len); + va = (__force void *)ioremap_wc(mem->dma, mem->len); if (IS_ERR_OR_NULL(va)) { dev_err(dev, "Unable to map memory region: %pad+0x%zx\n", &mem->dma, mem->len); @@ -137,7 +137,7 @@ static int stm32_rproc_mem_release(struct rproc *rproc, struct rproc_mem_entry *mem) { dev_dbg(rproc->dev.parent, "unmap memory: %pa\n", &mem->dma); - iounmap(mem->va); + iounmap((__force __iomem void *)mem->va); return 0; } -- 2.25.1
