linux-kernel - [PATCH] drivers: spi: cadence: set cqspi to the driver

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Date:   Thu, 11 Mar 2021 17:12:20 +0800
From:   Meng.Li@...driver.com
To:     linux-kernel@...r.kernel.org
Cc:     broonie@...nel.org, tudor.ambarus@...rochip.com, vigneshr@...com,
        vadivel.muruganx.ramuthevar@...ux.intel.com,
        linux-spi@...r.kernel.org, meng.li@...driver.com
Subject: [PATCH] drivers: spi: cadence: set cqspi to the driver_data field of struct device

From: Meng Li <Meng.Li@...driver.com>

When initialize cadence qspi controller, it is need to set cqspi
to the driver_data field of struct device, because it will be
used in function cqspi_remove/suspend/resume(). Otherwise, there
will be a crash trace as below when invoking these finctions.
Call trace:
 cqspi_suspend+0x14/0x44
 dpm_run_callback+0x50/0x1c0
 __device_suspend+0x114/0x514
 ......
 el0_svc+0x20/0x30
 el0_sync_handler+0x1a4/0x1b0
 el0_sync+0x174/0x180

Fixes: 31fb632b5d43("spi: Move cadence-quadspi driver to drivers/spi/")
Cc: stable@...r.kernel.org
Signed-off-by: Meng Li <Meng.Li@...driver.com>
---
 drivers/spi/spi-cadence-quadspi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c
index ba7d40c2922f..d8b0e1f1cb3a 100644
--- a/drivers/spi/spi-cadence-quadspi.c
+++ b/drivers/spi/spi-cadence-quadspi.c
@@ -1198,6 +1198,7 @@ static int cqspi_probe(struct platform_device *pdev)
 	cqspi = spi_master_get_devdata(master);
 
 	cqspi->pdev = pdev;
+	platform_set_drvdata(pdev, cqspi);
 
 	/* Obtain configuration from OF. */
 	ret = cqspi_of_get_pdata(cqspi);
-- 
2.17.1