[PATCH 1/3] spi: fsl: unmap immr_spi_cs on remove

[Guangshuo Li <lgs201920130244@gmail.com>]

of_fsl_spi_remove() does not unmap pinfo->immr_spi_cs after a
successful probe when CONFIG_FSL_SOC is enabled and fsl,spisel_boot
causes of_fsl_spi_probe() to map it with ioremap(). The probe error
path already performs the matching iounmap().

Retrieve pinfo from the platform data and call iounmap() when
pinfo->immr_spi_cs is present, pairing normal removal with the mapping
established by of_fsl_spi_probe().

Fixes: 0f0581b24bd0 ("spi: fsl: Convert to use CS GPIO descriptors")
Signed-off-by: Guangshuo Li <lgs201920130244@gmail.com>
---
 drivers/spi/spi-fsl-spi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index e45816ef7b65..665902703973 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -702,10 +702,18 @@ static void of_fsl_spi_remove(struct platform_device *ofdev)
 {
 	struct spi_controller *host = platform_get_drvdata(ofdev);
 	struct mpc8xxx_spi *mpc8xxx_spi = spi_controller_get_devdata(host);
+#if IS_ENABLED(CONFIG_FSL_SOC)
+	struct fsl_spi_platform_data *pdata = dev_get_platdata(&ofdev->dev);
+	struct mpc8xxx_spi_probe_info *pinfo = to_of_pinfo(pdata);
+#endif
 
 	spi_unregister_controller(host);
 
 	fsl_spi_cpm_free(mpc8xxx_spi);
+#if IS_ENABLED(CONFIG_FSL_SOC)
+	if (pinfo->immr_spi_cs)
+		iounmap(pinfo->immr_spi_cs);
+#endif
 }
 
 static struct platform_driver of_fsl_spi_driver = {
-- 
2.43.0