diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-14 14:38:30 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-14 14:38:30 -0800 |
| commit | 172ad9af55d236cb124d67de7314a90dedb50df1 (patch) | |
| tree | ab225ebb0bcab867305fec87308bda97ca060102 /arch/mips/kernel/traps.c | |
| parent | a44007a42dfd8e487537c7b1f8045577b28a4d95 (diff) | |
| parent | 18558cae0272f8fd9647e69d3fec1565a7949865 (diff) | |
Merge 4.5-rc4 into usb-next
We want the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 25 |
1 files changed, 6 insertions, 19 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index bafcb7ad5c85..ae790c575d4f 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -663,7 +663,7 @@ static int simulate_rdhwr_normal(struct pt_regs *regs, unsigned int opcode) return -1; } -static int simulate_rdhwr_mm(struct pt_regs *regs, unsigned short opcode) +static int simulate_rdhwr_mm(struct pt_regs *regs, unsigned int opcode) { if ((opcode & MM_POOL32A_FUNC) == MM_RDHWR) { int rd = (opcode & MM_RS) >> 16; @@ -1119,11 +1119,12 @@ no_r2_instr: if (get_isa16_mode(regs->cp0_epc)) { unsigned short mmop[2] = { 0 }; - if (unlikely(get_user(mmop[0], epc) < 0)) + if (unlikely(get_user(mmop[0], (u16 __user *)epc + 0) < 0)) status = SIGSEGV; - if (unlikely(get_user(mmop[1], epc) < 0)) + if (unlikely(get_user(mmop[1], (u16 __user *)epc + 1) < 0)) status = SIGSEGV; - opcode = (mmop[0] << 16) | mmop[1]; + opcode = mmop[0]; + opcode = (opcode << 16) | mmop[1]; if (status < 0) status = simulate_rdhwr_mm(regs, opcode); @@ -1369,26 +1370,12 @@ asmlinkage void do_cpu(struct pt_regs *regs) if (unlikely(compute_return_epc(regs) < 0)) break; - if (get_isa16_mode(regs->cp0_epc)) { - unsigned short mmop[2] = { 0 }; - - if (unlikely(get_user(mmop[0], epc) < 0)) - status = SIGSEGV; - if (unlikely(get_user(mmop[1], epc) < 0)) - status = SIGSEGV; - opcode = (mmop[0] << 16) | mmop[1]; - - if (status < 0) - status = simulate_rdhwr_mm(regs, opcode); - } else { + if (!get_isa16_mode(regs->cp0_epc)) { if (unlikely(get_user(opcode, epc) < 0)) status = SIGSEGV; if (!cpu_has_llsc && status < 0) status = simulate_llsc(regs, opcode); - - if (status < 0) - status = simulate_rdhwr_normal(regs, opcode); } if (status < 0) |