MIPS: Fix erroneous JR emulation for MIPS R6
Commit 5f9f41c4 ("MIPS: kernel: Prepare the JR instruction for emulation on MIPS R6") added support for emulating the JR instruction on MIPS R6 cores but that introduced a bug which could be triggered when hitting a JALR opcode because the code used the wrong field in the 'r_format' struct to determine the instruction opcode. This lead to crashes because an emulated JALR instruction was treated as a JR one when the R6 emulator was turned off. Fixes: 5f9f41c4 ("MIPS: kernel: Prepare the JR instruction for emulation on MIPS R6") Cc: <stable@vger.kernel.org> # 4.0+ Signed-off-by: NMarkos Chandras <markos.chandras@imgtec.com> Cc: linux-mips@linux-mips.org Cc: stable@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10583/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
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