ipmi: Remove platform driver overrides and use the id_table

mainline inclusion
from mainline-4.20-rc1
commit b3096c70b3faf0b08d7d461f359eb4b0447dff8e
category: cleanup
Bugzilla: 10639
CVE: NA

----------------------------------------

The IPMI DMI code was adding platform overrides, which is not
really an ideal solution.  Switch to using the id_table in
the drivers to identify the devices.
Signed-off-by: NCorey Minyard <cminyard@mvista.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/char/ipmi/ipmi_dmi.c

@@ -41,7 +41,7 @@ static void __init dmi_add_platform_ipmi(unsigned long base_addr,
 	unsigned int num_r = 1, size;
 	struct property_entry p[5];
 	unsigned int pidx = 0;
-	char *name, *override;
+	char *name;
 	int rv;
 	enum si_type si_type;
 	struct ipmi_dmi_info *info;
@@ -49,11 +49,9 @@ static void __init dmi_add_platform_ipmi(unsigned long base_addr,
 	memset(p, 0, sizeof(p));
 
 	name = "dmi-ipmi-si";
-	override = "ipmi_si";
 	switch (type) {
 	case IPMI_DMI_TYPE_SSIF:
 		name = "dmi-ipmi-ssif";
-		override = "ipmi_ssif";
 		offset = 1;
 		size = 1;
 		si_type = SI_TYPE_INVALID;
@@ -98,10 +96,6 @@ static void __init dmi_add_platform_ipmi(unsigned long base_addr,
 		pr_err("ipmi:dmi: Error allocation IPMI platform device\n");
 		return;
 	}
-	pdev->driver_override = kasprintf(GFP_KERNEL, "%s",
-					  override);
-	if (!pdev->driver_override)
-		goto err;
 
 	if (type == IPMI_DMI_TYPE_SSIF) {
 		p[pidx++] = PROPERTY_ENTRY_U16("i2c-addr", base_addr);

drivers/char/ipmi/ipmi_si_platform.c

@@ -417,6 +417,11 @@ static int ipmi_remove(struct platform_device *pdev)
 	return ipmi_si_remove_by_dev(&pdev->dev);
 }
 
+static const struct platform_device_id si_plat_ids[] = {
+    { "dmi-ipmi-si", 0 },
+    { }
+};
+
 struct platform_driver ipmi_platform_driver = {
 	.driver = {
 		.name = DEVICE_NAME,
@@ -425,6 +430,7 @@ struct platform_driver ipmi_platform_driver = {
 	},
 	.probe		= ipmi_probe,
 	.remove		= ipmi_remove,
+	.id_table       = si_plat_ids
 };
 
 void ipmi_si_platform_init(void)

drivers/char/ipmi/ipmi_ssif.c

@@ -1858,12 +1858,18 @@ static int ssif_platform_remove(struct platform_device *dev)
 	return 0;
 }
 
+static const struct platform_device_id ssif_plat_ids[] = {
+    { "dmi-ipmi-ssif", 0 },
+    { }
+};
+
 static struct platform_driver ipmi_driver = {
 	.driver = {
 		.name = DEVICE_NAME,
 	},
 	.probe		= ssif_platform_probe,
 	.remove		= ssif_platform_remove,
+	.id_table       = ssif_plat_ids
 };
 
 static int init_ipmi_ssif(void)