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i2c: i801: Save register SMBSLVCMD value only once

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commit a086bb8317 upstream.

Saving the original value of register SMBSLVCMD in
i801_enable_host_notify() doesn't work, because this function is
called not only at probe time but also at resume time. Do it in
i801_probe() instead, so that the saved value is not overwritten at
resume time.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Fixes: 22e94bd677 ("i2c: i801: store and restore the SLVCMD register at load and unload")
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Jason Andryuk <jandryuk@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@vger.kernel.org	# v4.10+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jean Delvare
2018-04-11 18:03:31 +02:00
committed by Greg Kroah-Hartman
parent fbd45e2957
commit 53defab7a5
1 changed files with 4 additions and 2 deletions
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6
drivers/i2c/busses/i2c-i801.c
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@@ -963,8 +963,6 @@ static int i801_enable_host_notify(struct i2c_adapter *adapter)
if (!priv->host_notify)
return -ENOMEM;
priv->original_slvcmd = inb_p(SMBSLVCMD(priv));
if (!(SMBSLVCMD_HST_NTFY_INTREN & priv->original_slvcmd))
outb_p(SMBSLVCMD_HST_NTFY_INTREN | priv->original_slvcmd,
SMBSLVCMD(priv));
@@ -1603,6 +1601,10 @@ static int i801_probe(struct pci_dev *dev, const struct pci_device_id *id)
outb_p(inb_p(SMBAUXCTL(priv)) &
~(SMBAUXCTL_CRC | SMBAUXCTL_E32B), SMBAUXCTL(priv));
/* Remember original Host Notify setting */
if (priv->features & FEATURE_HOST_NOTIFY)
priv->original_slvcmd = inb_p(SMBSLVCMD(priv));
/* Default timeout in interrupt mode: 200 ms */
priv->adapter.timeout = HZ / 5;