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realtek: backport GPIO IRQ index fix

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Backport the patch queued upstream for 5.16. The patch differs slightly
from the upstream patch due to an upstream change that added a
convenience function.

Signed-off-by: Sander Vanheule <sander@svanheule.net>
This commit is contained in:
Sander Vanheule 2021-10-31 14:41:54 +01:00 committed by Christian Lamparter
parent b69dfb0a99
commit c735d2e218
1 changed files with 21 additions and 0 deletions
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21
target/linux/realtek/patches-5.10/007-5.16-gpio-realtek-realtek-otto-fix-gpio-line-irq-offset.patch Normal file
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@ -0,0 +1,21 @@
gpio: realtek-otto: fix GPIO line IRQ offset
The irqchip uses one domain for all GPIO lines, so th line offset should be
determined w.r.t. the first line of the first port, not the first line of the
triggered port.
Fixes: 0d82fb1127fb ("gpio: Add Realtek Otto GPIO support")
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Link: https://lore.kernel.org/linux-gpio/20211028085243.34360-1-sander@svanheule.net/
--- a/drivers/gpio/gpio-realtek-otto.c
+++ b/drivers/gpio/gpio-realtek-otto.c
@@ -206,7 +206,7 @@ static void realtek_gpio_irq_handler(str
status = realtek_gpio_read_isr(ctrl, lines_done / 8);
port_pin_count = min(gc->ngpio - lines_done, 8U);
for_each_set_bit(offset, &status, port_pin_count) {
- irq = irq_find_mapping(gc->irq.domain, offset);
+ irq = irq_find_mapping(gc->irq.domain, offset + lines_done);
generic_handle_irq(irq);
}
}