intc_set_sense() oops on SH-X3 IRL mode

[Paul M. <le...@li...>]

Throwing the SH-X3 proto board in to IRQ_MODE_IRL3210 mode results in the
following oops:

Unable to handle kernel NULL pointer dereference at virtual address 0000000c
pc = 8c009ecc
*pde = 00000000
Oops: 0000 [#1]
Modules linked in:

Pid : 1, Comm:              swapper
PC is at intc_set_sense+0x98/0x148
PC  : 8c009ecc SP  : 8c64fdf4 SR  : 400000f0 TEA : 0000000c    Not tainted
R0  : 00000000 R1  : 0000000c R2  : 00000000 R3  : 00000000
R4  : 00000000 R5  : 00000001 R6  : 00000000 R7  : 00010000
R8  : 8c2266f8 R9  : 00000004 R10 : 00010000 R11 : 0000000f
R12 : 0000001c R13 : 00000000 R14 : 8c64fdf4
MACH: 000002c7 MACL: 000004d0 GBR : 00000000 PR  : 8c036118

Call trace:
[<8c036118>] setup_irq+0xbc/0x18c
[<8c03634a>] request_irq+0x7e/0xb4
[<8c10e8d4>] smc_interrupt+0x0/0x808
...

Disabling the ->set_type() assignment works as expected, so it's just a
problem with the sense registers. The smc91x IRQ is 14.