linux-kernel - [PATCH net-next 5/7] net: ipa: get rid of extra clock reference

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210810192704.2476461-6-elder@linaro.org>
Date:   Tue, 10 Aug 2021 14:27:02 -0500
From:   Alex Elder <elder@...aro.org>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     bjorn.andersson@...aro.org, evgreen@...omium.org,
        cpratapa@...eaurora.org, subashab@...eaurora.org, elder@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH net-next 5/7] net: ipa: get rid of extra clock reference

Suspending the IPA hardware is now managed by the runtime PM core
code.  The ->runtime_idle callback returns a non-zero value, so it
will never suspend except when forced.  As a result, there's no need
to take an extra "do not suspend" clock reference.

Signed-off-by: Alex Elder <elder@...aro.org>
---
 drivers/net/ipa/ipa_main.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c
index 64112a6767743..f332210ce5354 100644
--- a/drivers/net/ipa/ipa_main.c
+++ b/drivers/net/ipa/ipa_main.c
@@ -427,14 +427,6 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data)
 {
 	int ret;
 
-	/* Get a clock reference to allow initialization.  This reference
-	 * is held after initialization completes, and won't get dropped
-	 * unless/until a system suspend request arrives.
-	 */
-	ret = ipa_clock_get(ipa);
-	if (WARN_ON(ret < 0))
-		goto err_clock_put;
-
 	ipa_hardware_config(ipa, data);
 
 	ret = ipa_mem_config(ipa);
@@ -477,8 +469,6 @@ static int ipa_config(struct ipa *ipa, const struct ipa_data *data)
 	ipa_mem_deconfig(ipa);
 err_hardware_deconfig:
 	ipa_hardware_deconfig(ipa);
-err_clock_put:
-	(void)ipa_clock_put(ipa);
 
 	return ret;
 }
@@ -496,7 +486,6 @@ static void ipa_deconfig(struct ipa *ipa)
 	ipa->interrupt = NULL;
 	ipa_mem_deconfig(ipa);
 	ipa_hardware_deconfig(ipa);
-	(void)ipa_clock_put(ipa);
 }
 
 static int ipa_firmware_load(struct device *dev)
-- 
2.27.0