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Diffstat (limited to 'drivers/i2c/i2c-core.h')
| -rw-r--r-- | drivers/i2c/i2c-core.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/i2c/i2c-core.h b/drivers/i2c/i2c-core.h index 37576f50fe20..9d8526415b26 100644 --- a/drivers/i2c/i2c-core.h +++ b/drivers/i2c/i2c-core.h @@ -29,6 +29,16 @@ extern int __i2c_first_dynamic_bus_num; int i2c_check_7bit_addr_validity_strict(unsigned short addr); +/* + * We only allow atomic transfers for very late communication, e.g. to send + * the powerdown command to a PMIC. Atomic transfers are a corner case and not + * for generic use! + */ +static inline bool i2c_in_atomic_xfer_mode(void) +{ + return system_state > SYSTEM_RUNNING && irqs_disabled(); +} + #ifdef CONFIG_ACPI const struct acpi_device_id * i2c_acpi_match_device(const struct acpi_device_id *matches, |