TWL4030: change init-time IMR mask code to WARN if error From: Paul Walmsley 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 --- drivers/i2c/chips/twl4030-core.c | 100 +++++++------------------------------- 1 files changed, 18 insertions(+), 82 deletions(-) diff --git a/drivers/i2c/chips/twl4030-core.c b/drivers/i2c/chips/twl4030-core.c index eae0634..99cc143 100644 --- a/drivers/i2c/chips/twl4030-core.c +++ b/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,