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| author | Alex Elder <elder@linaro.org> | 2024-02-23 07:39:30 -0600 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-27 11:24:04 +0100 |
| commit | f9345952e74a77ba905b5a23252bffde48162ef3 (patch) | |
| tree | 87dc5b4f1a34169664f596671e5b8f3e7f1bba86 /drivers | |
| parent | 423df2e09d3b893ce83bc35ca81657829604968e (diff) | |
| download | linux-f9345952e74a77ba905b5a23252bffde48162ef3.tar.gz linux-f9345952e74a77ba905b5a23252bffde48162ef3.tar.bz2 linux-f9345952e74a77ba905b5a23252bffde48162ef3.zip | |
net: ipa: don't bother zeroing an already zero register
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@linaro.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ipa/ipa_interrupt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c index 501962cc4e90..4d80bf77a532 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); |