twl4030_charger: Fix warnings

Fix warnings emitted by some versions of gcc:
drivers/power/twl4030_charger.c:490: warning: overflow in implicit constant conversion
drivers/power/twl4030_charger.c:498: warning: overflow in implicit constant conversion

While at it, also fix module_param permissions and a typo in my name.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

drivers/power/twl4030_charger.c

@@ -62,7 +62,7 @@
 #define TWL4030_MSTATEC_COMPLETE4	0x0e
 
 static bool allow_usb;
-module_param(allow_usb, bool, 1);
+module_param(allow_usb, bool, 0644);
 MODULE_PARM_DESC(allow_usb, "Allow USB charge drawing default current");
 
 struct twl4030_bci {
@@ -425,7 +425,7 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
 {
 	struct twl4030_bci *bci;
 	int ret;
-	int reg;
+	u32 reg;
 
 	bci = kzalloc(sizeof(*bci), GFP_KERNEL);
 	if (bci == NULL)
@@ -486,7 +486,7 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
 	}
 
 	/* Enable interrupts now. */
-	reg = ~(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 |
+	reg = ~(u32)(TWL4030_ICHGLOW | TWL4030_ICHGEOC | TWL4030_TBATOR2 |
 		TWL4030_TBATOR1 | TWL4030_BATSTS);
 	ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
 			       TWL4030_INTERRUPTS_BCIIMR1A);
@@ -495,7 +495,7 @@ static int __init twl4030_bci_probe(struct platform_device *pdev)
 		goto fail_unmask_interrupts;
 	}
 
-	reg = ~(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
+	reg = ~(u32)(TWL4030_VBATOV | TWL4030_VBUSOV | TWL4030_ACCHGOV);
 	ret = twl_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, reg,
 			       TWL4030_INTERRUPTS_BCIIMR2A);
 	if (ret < 0)
@@ -572,7 +572,7 @@ static void __exit twl4030_bci_exit(void)
 }
 module_exit(twl4030_bci_exit);
 
-MODULE_AUTHOR("Gražydas Ignotas");
+MODULE_AUTHOR("Gražvydas Ignotas");
 MODULE_DESCRIPTION("TWL4030 Battery Charger Interface driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:twl4030_bci");