diff options
| author | Magnus Damm <damm@opensource.se> | 2011-10-17 10:59:54 +0200 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-10-28 07:39:24 +0200 |
| commit | 52e3124f248e9ada990cd2aeafe250a53713c6f0 (patch) | |
| tree | 64e89834168bc819c0c47bd01ff698acbdb12f32 /drivers/sh | |
| parent | sh: drop unused Kconfig symbol (diff) | |
| download | linux-52e3124f248e9ada990cd2aeafe250a53713c6f0.tar.xz linux-52e3124f248e9ada990cd2aeafe250a53713c6f0.zip | |
sh: intc: Add IRQ trigger bit field check
R-Mobile SoCs such as sh73a0 include PINT blocks in INTC
that come with 2-bit IRQ trigger support. Add code to make
sure the bit width is checked so 4-bit only modes like for
instance EDGE_BOTH will fail for PINT.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'drivers/sh')
| -rw-r--r-- | drivers/sh/intc/chip.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/sh/intc/chip.c b/drivers/sh/intc/chip.c index 33b2ed451e09..e0ada3773786 100644 --- a/drivers/sh/intc/chip.c +++ b/drivers/sh/intc/chip.c @@ -202,11 +202,16 @@ static int intc_set_type(struct irq_data *data, unsigned int type) if (!value) return -EINVAL; + value &= ~SENSE_VALID_FLAG; + ihp = intc_find_irq(d->sense, d->nr_sense, irq); if (ihp) { + /* PINT has 2-bit sense registers, should fail on EDGE_BOTH */ + if (value >= (1 << _INTC_WIDTH(ihp->handle))) + return -EINVAL; + addr = INTC_REG(d, _INTC_ADDR_E(ihp->handle), 0); - intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, - value & ~SENSE_VALID_FLAG); + intc_reg_fns[_INTC_FN(ihp->handle)](addr, ihp->handle, value); } return 0; |