From: Barry Song <song.bao.hua@hisilicon.com>
To: <vkoul@kernel.org>, <dmaengine@vger.kernel.org>
Cc: Barry Song <song.bao.hua@hisilicon.com>
Subject: [PATCH 01/10] dmaengine: ipu_idmac: remove redundant irqsave and restore in hardIRQ
Date: Fri, 16 Oct 2020 12:59:12 +1300 [thread overview]
Message-ID: <20201015235921.21224-2-song.bao.hua@hisilicon.com> (raw)
In-Reply-To: <20201015235921.21224-1-song.bao.hua@hisilicon.com>
Running in hardIRQ, disabling IRQ is redundant.
Signed-off-by: Barry Song <song.bao.hua@hisilicon.com>
---
drivers/dma/ipu/ipu_idmac.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/dma/ipu/ipu_idmac.c b/drivers/dma/ipu/ipu_idmac.c
index 38036db284cb..104ad420abbe 100644
--- a/drivers/dma/ipu/ipu_idmac.c
+++ b/drivers/dma/ipu/ipu_idmac.c
@@ -1160,14 +1160,13 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
struct idmac_tx_desc *desc, *descnew;
bool done = false;
u32 ready0, ready1, curbuf, err;
- unsigned long flags;
struct dmaengine_desc_callback cb;
/* IDMAC has cleared the respective BUFx_RDY bit, we manage the buffer */
dev_dbg(dev, "IDMAC irq %d, buf %d\n", irq, ichan->active_buffer);
- spin_lock_irqsave(&ipu_data.lock, flags);
+ spin_lock(&ipu_data.lock);
ready0 = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF0_RDY);
ready1 = idmac_read_ipureg(&ipu_data, IPU_CHA_BUF1_RDY);
@@ -1176,7 +1175,7 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
if (err & (1 << chan_id)) {
idmac_write_ipureg(&ipu_data, 1 << chan_id, IPU_INT_STAT_4);
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
/*
* Doing this
* ichan->sg[0] = ichan->sg[1] = NULL;
@@ -1188,7 +1187,7 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
chan_id, ready0, ready1, curbuf);
return IRQ_HANDLED;
}
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
/* Other interrupts do not interfere with this channel */
spin_lock(&ichan->lock);
@@ -1251,9 +1250,9 @@ static irqreturn_t idmac_interrupt(int irq, void *dev_id)
if (unlikely(sgnew)) {
ipu_submit_buffer(ichan, descnew, sgnew, !ichan->active_buffer);
} else {
- spin_lock_irqsave(&ipu_data.lock, flags);
+ spin_lock(&ipu_data.lock);
ipu_ic_disable_task(&ipu_data, chan_id);
- spin_unlock_irqrestore(&ipu_data.lock, flags);
+ spin_unlock(&ipu_data.lock);
ichan->status = IPU_CHANNEL_READY;
/* Continue to check for complete descriptor */
}
--
2.25.1
next prev parent reply other threads:[~2020-10-16 0:03 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 23:59 [PATCH 00/10] dmaengine: a bundle of cleanup on spin_lock_irqsave/irqrestore Barry Song
2020-10-15 23:59 ` Barry Song [this message]
2020-10-15 23:59 ` [PATCH 02/10] dmaengine: k3-udma: remove redundant irqsave and irqrestore in hardIRQ Barry Song
2020-10-19 13:45 ` Peter Ujfalusi
2020-10-15 23:59 ` [PATCH 03/10] dmaengine: sf-pdma: " Barry Song
2020-10-15 23:59 ` [PATCH 04/10] dmaengine: tegra210-adma: " Barry Song
2020-10-19 10:31 ` Jon Hunter
2020-10-15 23:59 ` [PATCH 05/10] dmaengine: milbeaut-xdmac: " Barry Song
2020-10-15 23:59 ` [PATCH 06/10] dmaengine: k3dma: " Barry Song
2020-10-15 23:59 ` [PATCH 07/10] dmaengine: hisi_dma: " Barry Song
2020-10-26 1:23 ` Zhou Wang
2020-10-15 23:59 ` [PATCH 08/10] dmaengine: moxart-dma: " Barry Song
2020-10-15 23:59 ` [PATCH 09/10] dmaengine: ste_dma40: " Barry Song
2020-10-29 14:01 ` Linus Walleij
2020-10-29 20:58 ` Song Bao Hua (Barry Song)
2020-10-15 23:59 ` [PATCH 10/10] dmaengine: pxa_dma: " Barry Song
2020-10-23 20:16 ` Robert Jarzmik
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