From: Matt Redfearn <matt.redfearn@xxxxxxxxxx>
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@xxxxxxxxxx>
Cc: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Cc: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/15110/
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
(cherry picked from commit c25f8064c1d5731a2ce5664def890140dcdd3e5c)
Signed-off-by: Amit Pundir <amit.pundir@xxxxxxxxxx>
---
arch/mips/kernel/genex.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index 2c7cd62..619e30e 100644
--- 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
--
2.7.4