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;
> }
>
next prev parent 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 [PATCH] spi: spi-zynq-qspi: use wait_for_completion_timeout to make zynq_qspi_exec_mem_op not interruptible quanyang.wang
2021-08-06 0:41 ` quanyang.wang [this message]
2021-08-06 0:47 ` Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=e639bfc1-ce6f-c5d3-6412-70d03706127d@windriver.com \
--to=quanyang.wang@windriver.com \
--cc=amit.kumar-mahapatra@xilinx.com \
--cc=broonie@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-spi@vger.kernel.org \
--cc=michal.simek@xilinx.com \
--cc=naga.sureshkumar.relli@xilinx.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).