From: Tudor Ambarus <tudor.ambarus@microchip.com>
To: <vkoul@kernel.org>, <peda@axentia.se>, <du@axentia.se>,
<regressions@leemhuis.info>
Cc: <ludovic.desroches@microchip.com>, <maciej.sosnowski@intel.com>,
<tudor.ambarus@microchip.com>, <dan.j.williams@intel.com>,
<nicolas.ferre@microchip.com>, <mripard@kernel.org>,
<torfl6749@gmail.com>, <linux-kernel@vger.kernel.org>,
<dmaengine@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH 20/33] dmaengine: at_hdmac: Do not print messages on console while holding the lock
Date: Sat, 20 Aug 2022 15:57:04 +0300 [thread overview]
Message-ID: <20220820125717.588722-21-tudor.ambarus@microchip.com> (raw)
In-Reply-To: <20220820125717.588722-1-tudor.ambarus@microchip.com>
The descriptor was already removed from the transfer list, there's no
reason to keep the channel lock while printing desc info, thus do the
prints without holding the lock.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/dma/at_hdmac.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 1cb0d26d30ed..16cea65a708d 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -983,6 +983,8 @@ static void atc_handle_error(struct at_dma_chan *atchan)
atc_dostart(atchan, desc);
}
+ spin_unlock_irqrestore(&atchan->lock, flags);
+
/*
* KERN_CRITICAL may seem harsh, but since this only happens
* when someone submits a bad physical address in a
@@ -998,8 +1000,6 @@ static void atc_handle_error(struct at_dma_chan *atchan)
list_for_each_entry(child, &bad_desc->tx_list, desc_node)
atc_dump_lli(atchan, &child->lli);
- spin_unlock_irqrestore(&atchan->lock, flags);
-
/* Pretend the descriptor completed successfully */
atc_chain_complete(atchan, bad_desc);
}
--
2.25.1
next prev parent reply other threads:[~2022-08-20 12:59 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-20 12:56 [PATCH 00/33] dmaengine: at_hdmac: Fix concurrency bugs and then convert to virt-dma Tudor Ambarus
2022-08-20 12:56 ` [PATCH 01/33] dmaengine: at_hdmac: Keep register definitions and structures private to at_hdmac.c Tudor Ambarus
2022-08-20 12:56 ` [PATCH 02/33] dmaengine: at_hdmac: Use bitfield access macros Tudor Ambarus
2022-08-20 12:56 ` [PATCH 03/33] dmaengine: at_hdmac: Rename "dma_common" to "dma_device" Tudor Ambarus
2022-08-20 12:56 ` [PATCH 04/33] dmaengine: at_hdmac: Rename "chan_common" to "dma_chan" Tudor Ambarus
2022-08-20 12:56 ` [PATCH 05/33] dmaengine: at_hdmac: Remove unused member of at_dma_chan Tudor Ambarus
2022-08-20 12:56 ` [PATCH 06/33] dmaengine: at_hdmac: Return dma_cookie_status()'s ret code when txstate is NULL Tudor Ambarus
2022-08-20 12:56 ` [PATCH 07/33] dmaengine: at_hdmac: Fix at_lli struct definition Tudor Ambarus
2022-10-19 16:38 ` Vinod Koul
2022-10-20 7:08 ` Tudor.Ambarus
2022-08-20 12:56 ` [PATCH 08/33] dmaengine: at_hdmac: Don't start transactions at tx_submit level Tudor Ambarus
2022-08-20 12:56 ` [PATCH 09/33] dmaengine: at_hdmac: Start transfer for cyclic channels in issue_pending Tudor Ambarus
2022-08-20 12:56 ` [PATCH 10/33] dmaengine: at_hdmac: Fix premature completion of desc " Tudor Ambarus
2022-08-20 12:56 ` [PATCH 11/33] dmaengine: at_hdmac: Do not call the complete callback on device_terminate_all Tudor Ambarus
2022-08-20 12:56 ` [PATCH 12/33] dmaengine: at_hdmac: Protect atchan->status with the channel lock Tudor Ambarus
2022-08-20 12:56 ` [PATCH 13/33] dmaengine: at_hdmac: Fix concurrency problems by removing atc_complete_all() Tudor Ambarus
2022-08-20 12:56 ` [PATCH 14/33] dmaengine: at_hdmac: Fix concurrency over descriptor Tudor Ambarus
2022-08-20 12:56 ` [PATCH 15/33] dmaengine: at_hdmac: Free the memset buf without holding the chan lock Tudor Ambarus
2022-08-20 12:57 ` [PATCH 16/33] dmaengine: at_hdmac: Fix concurrency over the active list Tudor Ambarus
2022-08-20 12:57 ` [PATCH 17/33] dmaengine: at_hdmac: Fix descriptor handling when issuing it to hardware Tudor Ambarus
2022-08-20 12:57 ` [PATCH 18/33] dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors Tudor Ambarus
2022-08-20 12:57 ` [PATCH 19/33] dmaengine: at_hdmac: Don't allow CPU to reorder channel enable Tudor Ambarus
2022-08-20 12:57 ` Tudor Ambarus [this message]
2022-08-20 12:57 ` [PATCH 21/33] dmaengine: at_hdmac: Fix impossible condition Tudor Ambarus
2022-08-20 12:57 ` [PATCH 22/33] dmaengine: at_hdmac: Pass residue by address to avoid unneccessary implicit casts Tudor Ambarus
2022-08-20 12:57 ` [PATCH 23/33] dmaengine: at_hdmac: s/atc_get_bytes_left/atc_get_residue Tudor Ambarus
2022-08-20 12:57 ` [PATCH 24/33] dmaengine: at_hdmac: Introduce atc_get_llis_residue() Tudor Ambarus
2022-08-20 12:57 ` [PATCH 25/33] dmaengine: at_hdmac: Remove superfluous cast Tudor Ambarus
2022-08-20 12:57 ` [PATCH 26/33] dmaengine: at_hdmac: Use devm_kzalloc() and struct_size() Tudor Ambarus
2022-08-20 12:57 ` [PATCH 27/33] dmaengine: at_hdmac: Use devm_platform_ioremap_resource Tudor Ambarus
2022-08-20 12:57 ` [PATCH 28/33] dmaengine: at_hdmac: Use devm_request_irq() Tudor Ambarus
2022-10-19 16:49 ` Vinod Koul
2022-10-20 7:24 ` Tudor.Ambarus
2022-08-20 12:57 ` [PATCH 29/33] dmaengine: at_hdmac: Use devm_clk_get() Tudor Ambarus
2022-08-20 12:57 ` [PATCH 30/33] dmaengine: at_hdmac: Check return code of dma_async_device_register Tudor Ambarus
2022-08-20 12:57 ` [PATCH 31/33] dmaengine: at_hdmac: Use pm_ptr() Tudor Ambarus
2022-10-19 16:50 ` Vinod Koul
2022-10-20 7:10 ` Tudor.Ambarus
2022-08-20 12:57 ` [PATCH 32/33] dmaengine: at_hdmac: Set include entries in alphabetic order Tudor Ambarus
2022-08-20 12:57 ` [PATCH 33/33] dmaengine: at_hdmac: Convert driver to use virt-dma Tudor Ambarus
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