drivers/fsi/scom: Remove reset before every putscom

Reset causes problems for operations requiring multiple scoms (e.g. i2c
over scom). Instead, reset scom engine during probe.

Signed-off-by: Edward A. James <eajames@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c
index 98d062f..e13353a 100644 (file)
--- a/drivers/fsi/fsi-scom.c
+++ b/drivers/fsi/fsi-scom.c
@@ -57,12 +57,6 @@ static int put_scom(struct scom_device *scom_dev, uint64_t value,
        int rc;
        uint32_t data;
 
-       data = cpu_to_be32(SCOM_RESET_CMD);
-       rc = fsi_device_write(scom_dev->fsi_dev, SCOM_RESET_REG, &data,
-                               sizeof(uint32_t));
-       if (rc)
-               return rc;
-
        data = cpu_to_be32((value >> 32) & 0xffffffff);
        rc = fsi_device_write(scom_dev->fsi_dev, SCOM_DATA0_REG, &data,
                                sizeof(uint32_t));
@@ -186,6 +180,7 @@ static const struct file_operations scom_fops = {
 
 static int scom_probe(struct device *dev)
 {
+       uint32_t data;
        struct fsi_device *fsi_dev = to_fsi_dev(dev);
        struct scom_device *scom;
 
@@ -202,6 +197,9 @@ static int scom_probe(struct device *dev)
        scom->mdev.parent = dev;
        list_add(&scom->link, &scom_devices);
 
+       data = cpu_to_be32(SCOM_RESET_CMD);
+       fsi_device_write(fsi_dev, SCOM_RESET_REG, &data, sizeof(uint32_t));
+
        return misc_register(&scom->mdev);
 }