lkml.org 
[lkml]   [2021]   [Sep]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.4 044/144] spi: spi-zynq-qspi: use wait_for_completion_timeout to make zynq_qspi_exec_mem_op not interruptible
Date
From: Quanyang Wang <quanyang.wang@windriver.com>

[ Upstream commit 26cfc0dbe43aae60dc03af27077775244f26c167 ]

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>
Link: https://lore.kernel.org/r/20210826005930.20572-1-quanyang.wang@windriver.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 5cf6993ddce5..1ced6eb8b330 100644
--- a/drivers/spi/spi-zynq-qspi.c
+++ b/drivers/spi/spi-zynq-qspi.c
@@ -533,7 +533,7 @@ 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;
}
@@ -551,7 +551,7 @@ 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;
}
@@ -567,7 +567,7 @@ 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;

@@ -591,7 +591,7 @@ 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;
}
--
2.30.2


\
 
 \ /
  Last update: 2021-09-13 15:20    [W:0.414 / U:0.648 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site