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