leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

gpio: stmpe: fix up interrupt enable logic

Browse Source 
The STMPE driver assumes that the passed in IRQ type is
for rising or falling IRQs, not both, even though the
hardware actually supports this perfectly well. Likewise
the check for level IRQs is done against just high or low
level types, not for the case where it is combined with
other IRQs.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2014-10-02 07:55:27 +02:00
parent afdadc06df
commit 1fe3bd9e34
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpio/gpio-stmpe.c
View File

@ -127,19 +127,19 @@ static int stmpe_gpio_irq_set_type(struct irq_data *d, unsigned int type)
int regoffset = offset / 8;
int mask = 1 << (offset % 8);
if (type == IRQ_TYPE_LEVEL_LOW || type == IRQ_TYPE_LEVEL_HIGH)
if (type & IRQ_TYPE_LEVEL_LOW || type & IRQ_TYPE_LEVEL_HIGH)
return -EINVAL;
/* STMPE801 doesn't have RE and FE registers */
if (stmpe_gpio->stmpe->partnum == STMPE801)
return 0;
if (type == IRQ_TYPE_EDGE_RISING)
if (type & IRQ_TYPE_EDGE_RISING)
stmpe_gpio->regs[REG_RE][regoffset] |= mask;
else
stmpe_gpio->regs[REG_RE][regoffset] &= ~mask;
if (type == IRQ_TYPE_EDGE_FALLING)
if (type & IRQ_TYPE_EDGE_FALLING)
stmpe_gpio->regs[REG_FE][regoffset] |= mask;
else
stmpe_gpio->regs[REG_FE][regoffset] &= ~mask;