diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2019-06-17 22:06:05 +0300 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2019-06-24 15:19:31 +0100 |
| commit | 63b2de12b7eeacfb2edbe005f5c3cff17a2a02e2 (patch) | |
| tree | c1c1c4f131a3d811fd1c1d7bbe9392775f5909d0 | |
| parent | cd49b84d61b2dfc0360c76d9e6be49f5116ba1a5 (diff) | |
| download | linux-63b2de12b7eeacfb2edbe005f5c3cff17a2a02e2.tar.bz2 | |
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>
| -rw-r--r-- | drivers/mfd/stmfx.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mfd/stmfx.c b/drivers/mfd/stmfx.c index 7c419c078688..857991cb3cbb 100644 --- a/drivers/mfd/stmfx.c +++ b/drivers/mfd/stmfx.c @@ -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; |