i2c: thunderx: Replace pci_enable_msix()

Using pci_alloc_irq_vectors() instead of the deprecated
pci_enable_msix() allows to remove the msix_entry from
struct octeon_i2c and thus to get rid of the config symbol check.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-octeon-core.h

@@ -6,7 +6,6 @@
 #include <linux/i2c-smbus.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
-#include <linux/pci.h>
 
 /* Controller command patterns */
 #define SW_TWSI_V		BIT_ULL(63)	/* Valid bit */
@@ -118,9 +117,6 @@ struct octeon_i2c {
 	void (*hlc_int_disable)(struct octeon_i2c *);
 	atomic_t int_enable_cnt;
 	atomic_t hlc_int_enable_cnt;
-#if IS_ENABLED(CONFIG_I2C_THUNDERX)
-	struct msix_entry i2c_msix;
-#endif
 	struct i2c_smbus_alert_setup alert_data;
 	struct i2c_client *ara;
 };

drivers/i2c/busses/i2c-thunderx-pcidrv.c

@@ -188,11 +188,11 @@ static int thunder_i2c_probe_pci(struct pci_dev *pdev,
 	i2c->hlc_int_enable = thunder_i2c_hlc_int_enable;
 	i2c->hlc_int_disable = thunder_i2c_hlc_int_disable;
 
-	ret = pci_enable_msix(pdev, &i2c->i2c_msix, 1);
-	if (ret)
+	ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSIX);
+	if (ret < 0)
 		goto error;
 
-	ret = devm_request_irq(dev, i2c->i2c_msix.vector, octeon_i2c_isr, 0,
+	ret = devm_request_irq(dev, pci_irq_vector(pdev, 0), octeon_i2c_isr, 0,
 			       DRV_NAME, i2c);
 	if (ret)
 		goto error;