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From: Alex Elder <elder@linaro.org>
To: davem@davemloft.net, kuba@kernel.org
Cc: bjorn.andersson@linaro.org, evgreen@chromium.org,
	cpratapa@codeaurora.org, subashab@codeaurora.org,
	elder@kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH net-next 2/7] net: ipa: disable clock in suspend
Date: Tue, 10 Aug 2021 14:26:59 -0500	[thread overview]
Message-ID: <20210810192704.2476461-3-elder@linaro.org> (raw)
In-Reply-To: <20210810192704.2476461-1-elder@linaro.org>

Disable the IPA clock rather than dropping a reference to it in the
system suspend callback.  This forces the suspend to occur without
affecting existing references.

Similarly, enable the clock rather than taking a reference in
ipa_resume(), forcing a resume without changing the reference count.

Signed-off-by: Alex Elder <elder@linaro.org>
---
 drivers/net/ipa/ipa_clock.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ipa/ipa_clock.c b/drivers/net/ipa/ipa_clock.c
index d5a8b45ee59d1..864991f7ba4b5 100644
--- a/drivers/net/ipa/ipa_clock.c
+++ b/drivers/net/ipa/ipa_clock.c
@@ -414,7 +414,7 @@ static int ipa_suspend(struct device *dev)
 		gsi_suspend(&ipa->gsi);
 	}
 
-	return ipa_clock_put(ipa);
+	return ipa_clock_disable(ipa);
 }
 
 /**
@@ -432,14 +432,9 @@ static int ipa_resume(struct device *dev)
 	struct ipa *ipa = dev_get_drvdata(dev);
 	int ret;
 
-	/* This clock reference will keep the IPA out of suspend
-	 * until we get a power management suspend request.
-	 */
-	ret = ipa_clock_get(ipa);
-	if (WARN_ON(ret < 0)) {
-		(void)ipa_clock_put(ipa);
+	ret = ipa_clock_enable(ipa);
+	if (WARN_ON(ret < 0))
 		return ret;
-	}
 
 	/* Endpoints aren't usable until setup is complete */
 	if (ipa->setup_complete) {
-- 
2.27.0


  parent reply	other threads:[~2021-08-10 19:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-10 19:26 [PATCH net-next 0/7] net: ipa: use runtime PM reference counting Alex Elder
2021-08-10 19:26 ` [PATCH net-next 1/7] net: ipa: have ipa_clock_get() return a value Alex Elder
2021-08-10 19:26 ` Alex Elder [this message]
2021-08-10 19:27 ` [PATCH net-next 3/7] net: ipa: resume in ipa_clock_get() Alex Elder
2021-08-10 19:27 ` [PATCH net-next 4/7] net: ipa: use runtime PM core Alex Elder
2021-08-10 19:27 ` [PATCH net-next 5/7] net: ipa: get rid of extra clock reference Alex Elder
2021-08-10 19:27 ` [PATCH net-next 6/7] net: ipa: kill IPA clock reference count Alex Elder
2021-08-10 19:27 ` [PATCH net-next 7/7] net: ipa: kill ipa_clock_get_additional() Alex Elder

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