xen/pciback: remove set but not used variable 'old_state'
Fixes gcc '-Wunused-but-set-variable' warning: drivers/xen/xen-pciback/conf_space_capability.c: In function pm_ctrl_write: drivers/xen/xen-pciback/conf_space_capability.c:119:25: warning: variable old_state set but not used [-Wunused-but-set-variable] It is never used so can be removed. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Juergen Gross <jgross@suse.com>
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@ -116,13 +116,12 @@ static int pm_ctrl_write(struct pci_dev *dev, int offset, u16 new_value,
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{
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int err;
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u16 old_value;
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pci_power_t new_state, old_state;
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pci_power_t new_state;
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err = pci_read_config_word(dev, offset, &old_value);
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if (err)
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goto out;
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old_state = (pci_power_t)(old_value & PCI_PM_CTRL_STATE_MASK);
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new_state = (pci_power_t)(new_value & PCI_PM_CTRL_STATE_MASK);
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new_value &= PM_OK_BITS;
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