Patch "riscv: remove unreachable !HAVE_FUNCTION_GRAPH_RET_ADDR_PTR code" has been added to the 4.19-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    riscv: remove unreachable !HAVE_FUNCTION_GRAPH_RET_ADDR_PTR code

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     riscv-remove-unreachable-have_function_graph_ret_add.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 8bc6d6af4c47438cd8ac86927f6072797bed3786
Author: Christoph Hellwig <hch@xxxxxx>
Date:   Mon Apr 15 11:14:39 2019 +0200

    riscv: remove unreachable !HAVE_FUNCTION_GRAPH_RET_ADDR_PTR code
    
    [ Upstream commit 877425424d6c853b804e6b6a6045a5b4ea97c510 ]
    
    HAVE_FUNCTION_GRAPH_RET_ADDR_PTR is always defined for RISC-V.
    
    Signed-off-by: Christoph Hellwig <hch@xxxxxx>
    Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
    Stable-dep-of: 5c3022e4a616 ("riscv: stacktrace: Fixup ftrace_graph_ret_addr retp argument")
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/arch/riscv/kernel/stacktrace.c b/arch/riscv/kernel/stacktrace.c
index 74b2168d7298..39cd3cf9f06b 100644
--- a/arch/riscv/kernel/stacktrace.c
+++ b/arch/riscv/kernel/stacktrace.c
@@ -64,12 +64,8 @@ static void notrace walk_stackframe(struct task_struct *task,
 		frame = (struct stackframe *)fp - 1;
 		sp = fp;
 		fp = frame->fp;
-#ifdef HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
 		pc = ftrace_graph_ret_addr(current, NULL, frame->ra,
 					   (unsigned long *)(fp - 8));
-#else
-		pc = frame->ra - 0x4;
-#endif
 	}
 }