[PATCH v3] spi: loongson: pm: add .freeze .poweroff .thaw .restore

after execute s4, the spi error,
[ 1104.754246][ 4] [    T1] tpm_tis_spi spi-SMO0768:00: SPI transfer failed: -110
[ 1104.761503][ 4] [    T1] spi_master spi1: failed to transfer one message from queue
[ 1104.769201][ 4] [    T1] spi_master spi1: noqueue transfer failed
[ 1104.776344][ 4] [    T1] tpm_tis_spi spi-SMO0768:00: SPI transfer failed: -110
[ 1104.783609][ 4] [    T1] spi_master spi1: failed to transfer one message from queue
[ 1104.791308][ 4] [    T1] spi_master spi1: noqueue transfer failed
[ 1104.797446][ 4] [    T1] gttadd tpm_chip_start1 ret = -110
and in s4 the loongson_spi_resume&suspend are not
called at all. use DEFINE_SIMPLE_DEV_PM_OPS() add .freeze .poweroff
.thaw .restore, after s4 the spi communication is normal.

Signed-off-by: Li Jun <[email protected]>
---
 drivers/spi/spi-loongson-core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-loongson-core.c b/drivers/spi/spi-loongson-core.c
index 30b6a7176ce9..6ba7c56b1bdd 100644
--- a/drivers/spi/spi-loongson-core.c
+++ b/drivers/spi/spi-loongson-core.c
@@ -269,10 +269,8 @@ static int loongson_spi_resume(struct device *dev)
 	return 0;
 }
 
-const struct dev_pm_ops loongson_spi_dev_pm_ops = {
-	.suspend = loongson_spi_suspend,
-	.resume = loongson_spi_resume,
-};
+DEFINE_SIMPLE_DEV_PM_OPS(loongson_spi_dev_pm_ops, loongson_spi_suspend, loongson_spi_resume);
+
 EXPORT_SYMBOL_NS_GPL(loongson_spi_dev_pm_ops, "SPI_LOONGSON_CORE");
 
 MODULE_DESCRIPTION("Loongson SPI core driver");
-- 
2.25.1