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Subject[PATCH 2/2] mtd: m25p80: restore the addressing mode when stop using the flash
Date
From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

Add .shutdown function to restore the addressing mode in reboot
process, and add the same operation to the .remove function.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
---
drivers/mtd/devices/m25p80.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index dbe6a1de2bb8..867bd2d5a267 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -307,10 +307,17 @@ static int m25p_remove(struct spi_device *spi)
{
struct m25p *flash = spi_get_drvdata(spi);

+ spi_nor_restore_addr_mode(&flash->spi_nor);
/* Clean up MTD stuff. */
return mtd_device_unregister(&flash->spi_nor.mtd);
}

+static void m25p_shutdown(struct spi_device *spi)
+{
+ struct m25p *flash = spi_get_drvdata(spi);
+
+ spi_nor_restore_addr_mode(&flash->spi_nor);
+}
/*
* Do NOT add to this array without reading the following:
*
@@ -386,6 +393,7 @@ static struct spi_driver m25p80_driver = {
.id_table = m25p_ids,
.probe = m25p_probe,
.remove = m25p_remove,
+ .shutdown = m25p_shutdown,

/* REVISIT: many of these chips have deep power-down modes, which
* should clearly be entered on suspend() to minimize power use.
--
2.14.1
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