In ipa_interrupt_suspend_clear_all(), if the SUSPEND_INFO register read contains no set bits, there's no interrupt condition to clear. Skip the write to the clear register in that case. Signed-off-by: Alex Elder <elder@xxxxxxxxxx> --- drivers/net/ipa/ipa_interrupt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c index 501962cc4e90f..4d80bf77a5323 100644 --- a/drivers/net/ipa/ipa_interrupt.c +++ b/drivers/net/ipa/ipa_interrupt.c @@ -59,7 +59,7 @@ static void ipa_interrupt_suspend_clear_all(struct ipa_interrupt *interrupt) val = ioread32(ipa->reg_virt + reg_n_offset(reg, unit)); /* SUSPEND interrupt status isn't cleared on IPA version 3.0 */ - if (ipa->version == IPA_VERSION_3_0) + if (!val || ipa->version == IPA_VERSION_3_0) continue; reg = ipa_reg(ipa, IRQ_SUSPEND_CLR); -- 2.40.1
