From 3771e9bdea0e716195636708c3adf880075e293b Mon Sep 17 00:00:00 2001 From: Henrique de Moraes Holschuh Date: Fri, 4 Dec 2009 09:12:44 -0200 Subject: [PATCH] thinkpad-acpi: fix BEEP ACPI handler warnings Some ThinkPads want two arguments for BEEP, while others want just one, causing ACPICA to log warnings like this: ACPI Warning (nseval-0177): Excess arguments - method [BEEP] needs 1, found 2 [20080926] Deal with it. Signed-off-by: Henrique de Moraes Holschuh --- drivers/platform/x86/thinkpad_acpi.c | 26 ++++++++++++++++++++++++-- 1 file changed, 24 insertions(+), 2 deletions(-) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index 3981b060b7d..da739d5c921 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -264,6 +264,7 @@ static struct { u32 wan:1; u32 uwb:1; u32 fan_ctrl_status_undef:1; + u32 beep_needs_two_args:1; u32 input_device_registered:1; u32 platform_drv_registered:1; u32 platform_drv_attrs_registered:1; @@ -5142,8 +5143,17 @@ static struct ibm_struct led_driver_data = { TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ +#define TPACPI_BEEP_Q1 0x0001 + +static const struct tpacpi_quirk beep_quirk_table[] __initconst = { + TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ + TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ +}; + static int __init beep_init(struct ibm_init_struct *iibm) { + unsigned long quirks; + vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); TPACPI_ACPIHANDLE_INIT(beep); @@ -5151,6 +5161,11 @@ static int __init beep_init(struct ibm_init_struct *iibm) vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", str_supported(beep_handle != NULL)); + quirks = tpacpi_check_quirks(beep_quirk_table, + ARRAY_SIZE(beep_quirk_table)); + + tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); + return (beep_handle)? 0 : 1; } @@ -5182,8 +5197,15 @@ static int beep_write(char *buf) /* beep_cmd set */ } else return -EINVAL; - if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) - return -EIO; + if (tp_features.beep_needs_two_args) { + if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", + beep_cmd, 0)) + return -EIO; + } else { + if (!acpi_evalf(beep_handle, NULL, NULL, "vd", + beep_cmd)) + return -EIO; + } } return 0; -- 2.11.4.GIT