From: Aidan MacDonald aidanmacdonald.0x0@gmail.com
stable inclusion from stable-v5.10.127 commit 7d7450363fdfd17222f70f2014a5abe2a1fe2e2b category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5XDDK
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 485037ae9a095491beb7f893c909a76cc4f9d1e7 ]
When enabling a type_in_mask irq, the type_buf contents must be AND'd with the mask of the IRQ we're enabling to avoid enabling other IRQs by accident, which can happen if several type_in_mask irqs share a mask register.
Fixes: bc998a730367 ("regmap: irq: handle HW using separate rising/falling edge interrupts") Signed-off-by: Aidan MacDonald aidanmacdonald.0x0@gmail.com Link: https://lore.kernel.org/r/20220620200644.1961936-2-aidanmacdonald.0x0@gmail.... Signed-off-by: Mark Brown broonie@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com Reviewed-by: Wei Li liwei391@huawei.com --- drivers/base/regmap/regmap-irq.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index 87c5c421e0f4..4466f8bdab2e 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -220,6 +220,7 @@ static void regmap_irq_enable(struct irq_data *data) struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data); struct regmap *map = d->map; const struct regmap_irq *irq_data = irq_to_regmap_irq(d, data->hwirq); + unsigned int reg = irq_data->reg_offset / map->reg_stride; unsigned int mask, type;
type = irq_data->type.type_falling_val | irq_data->type.type_rising_val; @@ -236,14 +237,14 @@ static void regmap_irq_enable(struct irq_data *data) * at the corresponding offset in regmap_irq_set_type(). */ if (d->chip->type_in_mask && type) - mask = d->type_buf[irq_data->reg_offset / map->reg_stride]; + mask = d->type_buf[reg] & irq_data->mask; else mask = irq_data->mask;
if (d->chip->clear_on_unmask) d->clear_status = true;
- d->mask_buf[irq_data->reg_offset / map->reg_stride] &= ~mask; + d->mask_buf[reg] &= ~mask; }
static void regmap_irq_disable(struct irq_data *data)