diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-06.patch')
-rw-r--r-- | meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-06.patch | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-06.patch b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-06.patch new file mode 100644 index 0000000000..67b837c454 --- /dev/null +++ b/meta/recipes-kernel/linux/linux-omap2-git/beagleboard/TWL4030-06.patch @@ -0,0 +1,179 @@ +TWL4030: change init-time IMR mask code to WARN if error + +From: Paul Walmsley <paul@pwsan.com> + +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> +--- + + 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, |