TWL4030: change init-time IMR mask code to WARN if error

twl_init_irq() prints error messages and returns if any interrupt mask
register writes fail.  Change this to generate a warning traceback and
to continue execution rather than skipping TWL init.  (These mask
writes should not fail at all unless either the I2C bus or the TWL4030
is somehow wedged.)
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

drivers/i2c/chips/twl4030-core.c

@@ -778,18 +778,10 @@ static void twl_init_irq(void)
 
 
 	/* PWR_IMR1 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xFF, 0x1);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff, 0x1) < 0);
 
 	/* PWR_IMR2 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xFF, 0x3);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INT, 0xff, 0x3) < 0);
 
 	/* Clear off any other pending interrupts on power */
 
@@ -807,32 +799,16 @@ static void twl_init_irq(void)
 	/* Slave address 0x4A */
 
 	/* BCIIMR1A */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x2);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x2) < 0);
 
-	/* BCIIMR2A */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x3);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	/* BCIIMR2A  */
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x3) < 0);
 
-	/* BCIIMR1B */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x6);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	/* BCIIMR2A */
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x6) < 0);
 
 	/* BCIIMR2B */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xFF, 0x7);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_INTERRUPTS, 0xff, 0x7) < 0);
 
 	/* Are BCI interrupt status bits cleared by reads or writes? */
 	cor = twl4030_read_cor_bit(TWL4030_MODULE_INTERRUPTS,
@@ -853,18 +829,10 @@ static void twl_init_irq(void)
 
 	/* MAD C */
 	/* MADC_IMR1 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xFF, 0x62);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff, 0x62) < 0);
 
 	/* MADC_IMR2 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xFF, 0x64);
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_MADC, 0xff, 0x64) < 0);
 
 	/* Are MADC interrupt status bits cleared by reads or writes? */
 	cor = twl4030_read_cor_bit(TWL4030_MODULE_MADC,
@@ -879,11 +847,7 @@ static void twl_init_irq(void)
 
 	/* key Pad */
 	/* KEYPAD - IMR1 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xFF, (0x12));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff, 0x12) < 0);
 
 	/* Are keypad interrupt status bits cleared by reads or writes? */
 	cor = twl4030_read_cor_bit(TWL4030_MODULE_KEYPAD,
@@ -895,57 +859,29 @@ static void twl_init_irq(void)
 	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD, 0x11, cor) < 0);
 
 	/* KEYPAD - IMR2 */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xFF, (0x14));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_KEYPAD, 0xff, 0x14) < 0);
 
 	/* KEYPAD - ISR2 */
 	WARN_ON(twl4030_i2c_clear_isr(TWL4030_MODULE_KEYPAD, 0x13, cor) < 0);
 
 	/* Slave address 0x49 */
 	/* GPIO_IMR1A */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x1C));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1c) < 0);
 
 	/* GPIO_IMR2A */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x1D));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1d) < 0);
 
 	/* GPIO_IMR3A */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x1E));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x1e) < 0);
 
 	/* GPIO_IMR1B */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x22));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x22) < 0);
 
 	/* GPIO_IMR2B */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x23));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x23) < 0);
 
 	/* GPIO_IMR3B */
-	res = twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xFF, (0x24));
-	if (res < 0) {
-		pr_err("%s[%d][%d]\n", msg, res, __LINE__);
-		return;
-	}
+	WARN_ON(twl4030_i2c_write_u8(TWL4030_MODULE_GPIO, 0xff, 0x24) < 0);
 
 	/* Are GPIO interrupt status bits cleared by reads or writes? */
 	cor = twl4030_read_cor_bit(TWL4030_MODULE_GPIO,