diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-07-25 19:07:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 11:43:10 +0200 |
| commit | c424a75ba2a88cade67932ef86e075dea2f69d42 (patch) | |
| tree | e88e87e583243c4f682145dea41bbff28ef6edcf /drivers/mfd/wm8994-irq.c | |
| parent | 9dd22fba2547816da24c55b7c976aed3c86534a7 (diff) | |
| download | linux-rt-c424a75ba2a88cade67932ef86e075dea2f69d42.tar.gz | |
mfd: Don't use irq_create_mapping() to resolve a mapping
[ Upstream commit 9ff80e2de36d0554e3a6da18a171719fe8663c17 ]
Although irq_create_mapping() is able to deal with duplicate
mappings, it really isn't supposed to be a substitute for
irq_find_mapping(), and can result in allocations that take place
in atomic context if the mapping didn't exist.
Fix the handful of MFD drivers that use irq_create_mapping() in
interrupt context by using irq_find_mapping() instead.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/mfd/wm8994-irq.c')
| -rw-r--r-- | drivers/mfd/wm8994-irq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/wm8994-irq.c b/drivers/mfd/wm8994-irq.c index 18710f3b5c53..2c58d9b99a39 100644 --- a/drivers/mfd/wm8994-irq.c +++ b/drivers/mfd/wm8994-irq.c @@ -159,7 +159,7 @@ static irqreturn_t wm8994_edge_irq(int irq, void *data) struct wm8994 *wm8994 = data; while (gpio_get_value_cansleep(wm8994->pdata.irq_gpio)) - handle_nested_irq(irq_create_mapping(wm8994->edge_irq, 0)); + handle_nested_irq(irq_find_mapping(wm8994->edge_irq, 0)); return IRQ_HANDLED; } |