You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.3 KiB
35 lines
1.3 KiB
From de856416e7143e32afc4849625616554aa060f7a Mon Sep 17 00:00:00 2001
|
|
From: Matt Redfearn <matt.redfearn@imgtec.com>
|
|
Date: Wed, 25 Jan 2017 17:00:25 +0000
|
|
Subject: [PATCH] MIPS: IRQ Stack: Fix erroneous jal to plat_irq_dispatch
|
|
|
|
Commit dda45f701c9d ("MIPS: Switch to the irq_stack in interrupts")
|
|
changed both the normal and vectored interrupt handlers. Unfortunately
|
|
the vectored version, "except_vec_vi_handler", was incorrectly modified
|
|
to unconditionally jal to plat_irq_dispatch, rather than doing a jalr to
|
|
the vectored handler that has been set up. This is ok for many platforms
|
|
which set the vectored handler to plat_irq_dispatch anyway, but will
|
|
cause problems with platforms that use other handlers.
|
|
|
|
Fixes: dda45f701c9d ("MIPS: Switch to the irq_stack in interrupts")
|
|
Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
|
|
Cc: Ralf Baechle <ralf@linux-mips.org>
|
|
Cc: Paul Burton <paul.burton@imgtec.com>
|
|
Cc: linux-mips@linux-mips.org
|
|
Patchwork: https://patchwork.linux-mips.org/patch/15110/
|
|
Signed-off-by: James Hogan <james.hogan@imgtec.com>
|
|
---
|
|
arch/mips/kernel/genex.S | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
--- a/arch/mips/kernel/genex.S
|
|
+++ b/arch/mips/kernel/genex.S
|
|
@@ -330,7 +330,7 @@ NESTED(except_vec_vi_handler, 0, sp)
|
|
PTR_ADD sp, t0, t1
|
|
|
|
2:
|
|
- jal plat_irq_dispatch
|
|
+ jalr v0
|
|
|
|
/* Restore sp */
|
|
move sp, s1
|
|
|