diff options
| author | Marc Zyngier <maz@kernel.org> | 2021-07-25 19:07:54 +0100 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2021-08-05 12:41:06 +0100 |
| commit | 9ff80e2de36d0554e3a6da18a171719fe8663c17 (patch) | |
| tree | 89053da4d70cc9ce4ba58e07ecb659d0d5ba50f9 /drivers/mfd/stmpe.c | |
| parent | ab09511fb69bdd4c4767053d7766f4bb9d6e36ec (diff) | |
mfd: Don't use irq_create_mapping() to resolve a mapping
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>
Diffstat (limited to 'drivers/mfd/stmpe.c')
| -rw-r--r-- | drivers/mfd/stmpe.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/mfd/stmpe.c b/drivers/mfd/stmpe.c index 1dd39483e7c1..58d09c615e67 100644 --- a/drivers/mfd/stmpe.c +++ b/drivers/mfd/stmpe.c @@ -1095,7 +1095,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) if (variant->id_val == STMPE801_ID || variant->id_val == STMPE1600_ID) { - int base = irq_create_mapping(stmpe->domain, 0); + int base = irq_find_mapping(stmpe->domain, 0); handle_nested_irq(base); return IRQ_HANDLED; @@ -1123,7 +1123,7 @@ static irqreturn_t stmpe_irq(int irq, void *data) while (status) { int bit = __ffs(status); int line = bank * 8 + bit; - int nestedirq = irq_create_mapping(stmpe->domain, line); + int nestedirq = irq_find_mapping(stmpe->domain, line); handle_nested_irq(nestedirq); status &= ~(1 << bit); |