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pinctrl: qcom: tlmm-test: Validate irq_enable delivers edge irqs

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In commit 'cf9d052aa600 ("pinctrl: qcom: Don't clear pending interrupts
when enabling")' Doug establishes an expectation that edge interrupts
occurring while an interrupt is disabled should be delivered once the
interrupt is enabled again.

Implement a test to validate that this is the case.

Signed-off-by: Bjorn Andersson <bjorn.andersson@oss.qualcomm.com>
Link: https://lore.kernel.org/20250313-tlmm-test-disabled-irq-delivered-v1-1-f0be903732ac@oss.qualcomm.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Bjorn Andersson 2025-03-13 14:27:27 -07:00 • committed by Linus Walleij
parent e225128c3f
commit b938feb790
1 changed files with 37 additions and 0 deletions
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37
drivers/pinctrl/qcom/tlmm-test.c
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@ -506,6 +506,42 @@ static void tlmm_test_thread_falling_in_handler(struct kunit *test)
KUNIT_ASSERT_EQ(test, atomic_read(&priv->thread_count), 10);
}
/*
* Validate that edge interrupts occurring while irq is disabled is delivered
* once the interrupt is reenabled.
*/
static void tlmm_test_rising_while_disabled(struct kunit *test)
{
struct tlmm_test_priv *priv = test->priv;
unsigned int after_edge;
unsigned int before_edge;
priv->intr_op = TLMM_TEST_COUNT;
atomic_set(&priv->thread_op_remain, 10);
tlmm_output_low();
tlmm_test_request_hard_irq(test, IRQF_TRIGGER_RISING);
msleep(20);
disable_irq(tlmm_suite.irq);
before_edge = atomic_read(&priv->intr_count);
tlmm_output_high();
msleep(20);
after_edge = atomic_read(&priv->intr_count);
msleep(20);
enable_irq(tlmm_suite.irq);
msleep(20);
free_irq(tlmm_suite.irq, priv);
KUNIT_ASSERT_EQ(test, before_edge, 0);
KUNIT_ASSERT_EQ(test, after_edge, 0);
KUNIT_ASSERT_EQ(test, atomic_read(&priv->intr_count), 1);
}
static int tlmm_test_init(struct kunit *test)
{
struct tlmm_test_priv *priv;
@ -609,6 +645,7 @@ static struct kunit_case tlmm_test_cases[] = {
KUNIT_CASE(tlmm_test_thread_low),
KUNIT_CASE(tlmm_test_thread_rising_in_handler),
KUNIT_CASE(tlmm_test_thread_falling_in_handler),
KUNIT_CASE(tlmm_test_rising_while_disabled),
{}
};