From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Yongzhi Liu <lyz_cs@pku.edu.cn>, Vinod Koul <vkoul@kernel.org>,
Sasha Levin <sashal@kernel.org>,
christophe.jaillet@wanadoo.fr, arnd@arndb.de,
laurent.pinchart@ideasonboard.com, broonie@kernel.org,
dmaengine@vger.kernel.org
Subject: [PATCH AUTOSEL 5.10 14/18] dmaengine: shdma: Fix runtime PM imbalance on error
Date: Tue, 22 Feb 2022 21:30:31 -0500 [thread overview]
Message-ID: <20220223023035.241551-14-sashal@kernel.org> (raw)
In-Reply-To: <20220223023035.241551-1-sashal@kernel.org>
From: Yongzhi Liu <lyz_cs@pku.edu.cn>
[ Upstream commit 455896c53d5b803733ddd84e1bf8a430644439b6 ]
pm_runtime_get_() increments the runtime PM usage counter even
when it returns an error code, thus a matching decrement is needed on
the error handling path to keep the counter balanced.
Signed-off-by: Yongzhi Liu <lyz_cs@pku.edu.cn>
Link: https://lore.kernel.org/r/1642311296-87020-1-git-send-email-lyz_cs@pku.edu.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/dma/sh/shdma-base.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
index 7f72b3f4cd1ae..19ac95c0098f0 100644
--- a/drivers/dma/sh/shdma-base.c
+++ b/drivers/dma/sh/shdma-base.c
@@ -115,8 +115,10 @@ static dma_cookie_t shdma_tx_submit(struct dma_async_tx_descriptor *tx)
ret = pm_runtime_get(schan->dev);
spin_unlock_irq(&schan->chan_lock);
- if (ret < 0)
+ if (ret < 0) {
dev_err(schan->dev, "%s(): GET = %d\n", __func__, ret);
+ pm_runtime_put(schan->dev);
+ }
pm_runtime_barrier(schan->dev);
--
2.34.1
next prev parent reply other threads:[~2022-02-23 2:35 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-23 2:30 [PATCH AUTOSEL 5.10 01/18] mac80211_hwsim: report NOACK frames in tx_status Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 02/18] mac80211_hwsim: initialize ieee80211_tx_info at hw_scan_work Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 03/18] i2c: bcm2835: Avoid clock stretching timeouts Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 04/18] ASoC: rt5668: do not block workqueue if card is unbound Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 05/18] ASoC: rt5682: " Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 06/18] regulator: core: fix false positive in regulator_late_cleanup() Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 07/18] Input: clear BTN_RIGHT/MIDDLE on buttonpads Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 08/18] KVM: arm64: vgic: Read HW interrupt pending state from the HW Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 09/18] tipc: fix a bit overflow in tipc_crypto_key_rcv() Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 10/18] cifs: fix double free race when mount fails in cifs_get_root() Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 11/18] USB: zaurus: support another broken Zaurus Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 12/18] selftests/seccomp: Fix seccomp failure by adding missing headers Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 13/18] selftests/ftrace: Do not trace do_softirq because of PREEMPT_RT Sasha Levin
2022-02-23 2:30 ` Sasha Levin [this message]
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 15/18] i2c: cadence: allow COMPILE_TEST Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 16/18] i2c: qup: " Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 17/18] CDC-NCM: avoid overflow in sanity checking Sasha Levin
2022-02-23 2:30 ` [PATCH AUTOSEL 5.10 18/18] net: usb: cdc_mbim: avoid altsetting toggling for Telit FN990 Sasha Levin
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