From 26cfc0dbe43aae60dc03af27077775244f26c167 Mon Sep 17 00:00:00 2001
From: Quanyang Wang <quanyang.wang@windriver.com>
Date: Thu, 26 Aug 2021 08:59:30 +0800
Subject: [PATCH] spi: spi-zynq-qspi: use wait_for_completion_timeout to make zynq_qspi_exec_mem_op not interruptible
Git-commit: 26cfc0dbe43aae60dc03af27077775244f26c167
Patch-mainline: v5.15-rc1
References: git-fixes stable-5.14.4

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>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 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;
 	}
-- 
2.26.2