platform/x86: ideapad-laptop: remove unnecessary NULL checks

The checks that are removed test pointers which should not
be NULL. If they are NULL, that indicates a bug in
a different part of the kernel. Instead of silently
bailing out, let it fail loudly.
Signed-off-by: Barnabás Pőcze <pobrn@protonmail.com>
Link: https://lore.kernel.org/r/20210203215403.290792-3-pobrn@protonmail.comReviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/platform/x86/ideapad-laptop.c

@@ -264,9 +264,6 @@ static int debugfs_status_show(struct seq_file *s, void *data)
 	struct ideapad_private *priv = s->private;
 	unsigned long value;
 
-	if (!priv)
-		return -EINVAL;
-
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL_MAX, &value))
 		seq_printf(s, "Backlight max:\t%lu\n", value);
 	if (!read_ec_data(priv->adev->handle, VPCCMD_R_BL, &value))
@@ -311,9 +308,6 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 {
 	struct ideapad_private *priv = s->private;
 
-	if (!priv) {
-		seq_printf(s, "cfg: N/A\n");
-	} else {
 	seq_printf(s, "cfg: 0x%.8lX\n\nCapability: ",
 		   priv->cfg);
 	if (test_bit(CFG_BT_BIT, &priv->cfg))
@@ -343,7 +337,7 @@ static int debugfs_cfg_show(struct seq_file *s, void *data)
 		break;
 	}
 	seq_printf(s, "\n");
-	}
+
 	return 0;
 }
 DEFINE_SHOW_ATTRIBUTE(debugfs_cfg);
@@ -1050,9 +1044,6 @@ static int ideapad_backlight_get_brightness(struct backlight_device *blightdev)
 	struct ideapad_private *priv = bl_get_data(blightdev);
 	unsigned long now;
 
-	if (!priv)
-		return -EINVAL;
-
 	if (read_ec_data(priv->adev->handle, VPCCMD_R_BL, &now))
 		return -EIO;
 	return now;
@@ -1062,9 +1053,6 @@ static int ideapad_backlight_update_status(struct backlight_device *blightdev)
 {
 	struct ideapad_private *priv = bl_get_data(blightdev);
 
-	if (!priv)
-		return -EINVAL;
-
 	if (write_ec_cmd(priv->adev->handle, VPCCMD_W_BL,
 			 blightdev->props.brightness))
 		return -EIO;
@@ -1374,13 +1362,9 @@ static int ideapad_acpi_remove(struct platform_device *pdev)
 }
 
 #ifdef CONFIG_PM_SLEEP
-static int ideapad_acpi_resume(struct device *device)
+static int ideapad_acpi_resume(struct device *dev)
 {
-	struct ideapad_private *priv;
-
-	if (!device)
-		return -EINVAL;
-	priv = dev_get_drvdata(device);
+	struct ideapad_private *priv = dev_get_drvdata(dev);
 
 	ideapad_sync_rfk_state(priv);
 	ideapad_sync_touchpad_state(priv);