From: Minwoo Im <minwoo.im.dev@gmail.com>
To: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Minwoo Im <minwoo.im.dev@gmail.com>,
Andy Gross <agross@kernel.org>,
David Brown <david.brown@linaro.org>
Subject: [PATCH] firmware: qcom_scm: fix error for incompatible pointer
Date: Fri, 19 Jul 2019 22:43:03 +0900 [thread overview]
Message-ID: <20190719134303.7617-1-minwoo.im.dev@gmail.com> (raw)
The following error can happen when trying to build it:
```
drivers/firmware/qcom_scm.c: In function ‘qcom_scm_assign_mem’:
drivers/firmware/qcom_scm.c:460:47: error: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type [-Werror=incompatible-pointer-types]
ptr = dma_alloc_coherent(__scm->dev, ptr_sz, &ptr_phys, GFP_KERNEL);
^
In file included from drivers/firmware/qcom_scm.c:12:0:
./include/linux/dma-mapping.h:636:21: note: expected ‘dma_addr_t * {aka long long unsigned int *}’ but argument is of type ‘phys_addr_t * {aka unsigned int *}’
static inline void *dma_alloc_coherent(struct device *dev, size_t size,
^~~~~~~~~~~~~~~~~~
```
We just can cast phys_addr_t to dma_addr_t here.
Cc: Andy Gross <agross@kernel.org>
Cc: David Brown <david.brown@linaro.org>
Signed-off-by: Minwoo Im <minwoo.im.dev@gmail.com>
---
drivers/firmware/qcom_scm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c
index 2ddc118dba1b..7f6c841fa200 100644
--- a/drivers/firmware/qcom_scm.c
+++ b/drivers/firmware/qcom_scm.c
@@ -457,7 +457,8 @@ int qcom_scm_assign_mem(phys_addr_t mem_addr, size_t mem_sz,
ptr_sz = ALIGN(src_sz, SZ_64) + ALIGN(mem_to_map_sz, SZ_64) +
ALIGN(dest_sz, SZ_64);
- ptr = dma_alloc_coherent(__scm->dev, ptr_sz, &ptr_phys, GFP_KERNEL);
+ ptr = dma_alloc_coherent(__scm->dev, ptr_sz, (dma_addr_t *) &ptr_phys,
+ GFP_KERNEL);
if (!ptr)
return -ENOMEM;
--
2.17.1
next reply other threads:[~2019-07-19 13:43 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-19 13:43 Minwoo Im [this message]
2019-07-22 8:38 ` [PATCH] firmware: qcom_scm: fix error for incompatible pointer Marc Gonzalez
2019-07-22 9:30 ` Christoph Hellwig
2019-07-22 15:12 ` Bjorn Andersson
2019-07-23 13:28 ` Minwoo Im
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