[ Upstream commit 80f3afd72bd4149c57daf852905476b43bb47647 ]
While passing address phy address to DSP, take care of the offset
calculated from virtual address vma.
Fixes: c68cfb718c8f ("misc: fastrpc: Add support for context Invoke method")
Signed-off-by: Srinivas Kandagatla <srinivas.kandaga...@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/misc/fastrpc.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c
index 36d0d5c9cfbad..9996c83ba5cb9 100644
--- a/drivers/misc/fastrpc.c
+++ b/drivers/misc/fastrpc.c
@@ -667,8 +667,16 @@ static int fastrpc_get_args(u32 kernel, struct
fastrpc_invoke_ctx *ctx)
pages[i].size = roundup(len, PAGE_SIZE);
if (ctx->maps[i]) {
+ struct vm_area_struct *vma = NULL;
+
rpra[i].pv = (u64) ctx->args[i].ptr;
pages[i].addr = ctx->maps[i]->phys;
+
+ vma = find_vma(current->mm, ctx->args[i].ptr);
+ if (vma)
+ pages[i].addr += ctx->args[i].ptr -
+ vma->vm_start;
+
} else {
rlen -= ALIGN(args, FASTRPC_ALIGN) - args;
args = ALIGN(args, FASTRPC_ALIGN);
--
2.20.1
