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mfd: stmfx: Fix an endian bug in stmfx_irq_handler() 

It's not okay to cast a "u32 *" to "unsigned long *" when you are
doing a for_each_set_bit() loop because that will break on big
endian systems.

Fixes: 386145601b82 ("mfd: stmfx: Uninitialized variable in stmfx_irq_handler()")
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Amelie Delaunay <amelie.delaunay@st.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
hifive-unleashed-5.2
Dan Carpenter 2019-06-17 22:06:05 +03:00 committed by Lee Jones
parent cd49b84d61
commit 63b2de12b7
1 changed files with 3 additions and 1 deletions
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4
drivers/mfd/stmfx.c
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@ -204,6 +204,7 @@ static struct irq_chip stmfx_irq_chip = {
static irqreturn_t stmfx_irq_handler(int irq, void *data)
{
struct stmfx *stmfx = data;
unsigned long bits;
u32 pending, ack;
int n, ret;
@ -222,7 +223,8 @@ static irqreturn_t stmfx_irq_handler(int irq, void *data)
return IRQ_NONE;
}
for_each_set_bit(n, (unsigned long *)&pending, STMFX_REG_IRQ_SRC_MAX)
bits = pending;
for_each_set_bit(n, &bits, STMFX_REG_IRQ_SRC_MAX)
handle_nested_irq(irq_find_mapping(stmfx->irq_domain, n));
return IRQ_HANDLED;