[ 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.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@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);