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From: "quanyang.wang" <quanyang.wang@windriver.com>
To: Mark Brown <broonie@kernel.org>,
	Michal Simek <michal.simek@xilinx.com>,
	Naga Sureshkumar Relli <naga.sureshkumar.relli@xilinx.com>,
	Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com>
Cc: linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] spi: spi-zynq-qspi: use wait_for_completion_timeout to make zynq_qspi_exec_mem_op not interruptible
Date: Fri, 6 Aug 2021 08:41:41 +0800	[thread overview]
Message-ID: <e639bfc1-ce6f-c5d3-6412-70d03706127d@windriver.com> (raw)
In-Reply-To: <20210730031753.1317917-1-quanyang.wang@windriver.com>

ping.

On 7/30/21 11:17 AM, quanyang.wang@windriver.com wrote:
> From: Quanyang Wang <quanyang.wang@windriver.com>
> 
> The function wait_for_completion_interruptible_timeout will return
> -ERESTARTSYS immediately when receiving SIGKILL signal which is sent
> by "jffs2_gcd_mtd" during umounting jffs2. This will break the SPI memory
> operation because the data transmitting may begin before the command or
> address transmitting completes. Use wait_for_completion_timeout to prevent
> the process from being interruptible.
> 
> Fixes: 67dca5e580f1 ("spi: spi-mem: Add support for Zynq QSPI controller")
> Signed-off-by: Quanyang Wang <quanyang.wang@windriver.com>
> ---
>   drivers/spi/spi-zynq-qspi.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/spi/spi-zynq-qspi.c b/drivers/spi/spi-zynq-qspi.c
> index 9262c6418463..cfa222c9bd5e 100644
> --- a/drivers/spi/spi-zynq-qspi.c
> +++ b/drivers/spi/spi-zynq-qspi.c
> @@ -545,7 +545,7 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem,
>   		zynq_qspi_write_op(xqspi, ZYNQ_QSPI_FIFO_DEPTH, true);
>   		zynq_qspi_write(xqspi, ZYNQ_QSPI_IEN_OFFSET,
>   				ZYNQ_QSPI_IXR_RXTX_MASK);
> -		if (!wait_for_completion_interruptible_timeout(&xqspi->data_completion,
> +		if (!wait_for_completion_timeout(&xqspi->data_completion,
>   							       msecs_to_jiffies(1000)))
>   			err = -ETIMEDOUT;
>   	}
> @@ -563,7 +563,7 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem,
>   		zynq_qspi_write_op(xqspi, ZYNQ_QSPI_FIFO_DEPTH, true);
>   		zynq_qspi_write(xqspi, ZYNQ_QSPI_IEN_OFFSET,
>   				ZYNQ_QSPI_IXR_RXTX_MASK);
> -		if (!wait_for_completion_interruptible_timeout(&xqspi->data_completion,
> +		if (!wait_for_completion_timeout(&xqspi->data_completion,
>   							       msecs_to_jiffies(1000)))
>   			err = -ETIMEDOUT;
>   	}
> @@ -579,7 +579,7 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem,
>   		zynq_qspi_write_op(xqspi, ZYNQ_QSPI_FIFO_DEPTH, true);
>   		zynq_qspi_write(xqspi, ZYNQ_QSPI_IEN_OFFSET,
>   				ZYNQ_QSPI_IXR_RXTX_MASK);
> -		if (!wait_for_completion_interruptible_timeout(&xqspi->data_completion,
> +		if (!wait_for_completion_timeout(&xqspi->data_completion,
>   							       msecs_to_jiffies(1000)))
>   			err = -ETIMEDOUT;
>   
> @@ -603,7 +603,7 @@ static int zynq_qspi_exec_mem_op(struct spi_mem *mem,
>   		zynq_qspi_write_op(xqspi, ZYNQ_QSPI_FIFO_DEPTH, true);
>   		zynq_qspi_write(xqspi, ZYNQ_QSPI_IEN_OFFSET,
>   				ZYNQ_QSPI_IXR_RXTX_MASK);
> -		if (!wait_for_completion_interruptible_timeout(&xqspi->data_completion,
> +		if (!wait_for_completion_timeout(&xqspi->data_completion,
>   							       msecs_to_jiffies(1000)))
>   			err = -ETIMEDOUT;
>   	}
> 

  reply	other threads:[~2021-08-06  0:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-30  3:17 quanyang.wang
2021-08-06  0:41 ` quanyang.wang [this message]
2021-08-06  0:47   ` Mark Brown

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