Burst mode temporary (50 ms) locks EC to do only transactions with driver, without it some hardware returns abstract garbage. Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9341 Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx> --- drivers/acpi/ec.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 1de0905..98a5388 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -575,6 +575,8 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address, if (bits != 8 && acpi_strict) return AE_BAD_PARAMETER; + acpi_ec_burst_enable(ec); + if (function == ACPI_READ) { result = acpi_ec_read(ec, address, &temp); *value = temp; @@ -594,6 +596,8 @@ acpi_ec_space_handler(u32 function, acpi_physical_address address, } } + acpi_ec_burst_disable(ec); + switch (result) { case -EINVAL: return AE_BAD_PARAMETER; - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
