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Date: Mon, 19 Jun 2017 20:32:15 +0200 From: Willy Tarreau <w@....eu> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org, linux@...ck-us.net Cc: Chun-Yi Lee <joeyli.kernel@...il.com>, Darren Hart <dvhart@...radead.org>, Chun-Yi Lee <jlee@...e.com>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Ben Hutchings <ben@...adent.org.uk>, Jiri Slaby <jslaby@...e.cz>, Willy Tarreau <w@....eu> Subject: [PATCH 3.10 236/268] platform/x86: acer-wmi: setup accelerometer when machine has appropriate notify event From: Chun-Yi Lee <joeyli.kernel@...il.com> commit 98d610c3739ac354319a6590b915f4624d9151e6 upstream. The accelerometer event relies on the ACERWMID_EVENT_GUID notify. So, this patch changes the codes to setup accelerometer input device when detected ACERWMID_EVENT_GUID. It avoids that the accel input device created on every Acer machines. In addition, patch adds a clearly parsing logic of accelerometer hid to acer_wmi_get_handle_cb callback function. It is positive matching the "SENR" name with "BST0001" device to avoid non-supported hardware. Reported-by: Bjørn Mork <bjorn@...k.no> Cc: Darren Hart <dvhart@...radead.org> Signed-off-by: Chun-Yi Lee <jlee@...e.com> [andy: slightly massage commit message] Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com> Cc: Ben Hutchings <ben@...adent.org.uk> Signed-off-by: Jiri Slaby <jslaby@...e.cz> Signed-off-by: Willy Tarreau <w@....eu> --- drivers/platform/x86/acer-wmi.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 59a8d32..9e4f870 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -1860,11 +1860,24 @@ static int acer_wmi_enable_lm(void) return status; } +#define ACER_WMID_ACCEL_HID "BST0001" + static acpi_status __init acer_wmi_get_handle_cb(acpi_handle ah, u32 level, void *ctx, void **retval) { + struct acpi_device *dev; + + if (!strcmp(ctx, "SENR")) { + if (acpi_bus_get_device(ah, &dev)) + return AE_OK; + if (!strcmp(ACER_WMID_ACCEL_HID, acpi_device_hid(dev))) + return AE_OK; + } else + return AE_OK; + *(acpi_handle *)retval = ah; - return AE_OK; + + return AE_CTRL_TERMINATE; } static int __init acer_wmi_get_handle(const char *name, const char *prop, @@ -1891,7 +1904,7 @@ static int __init acer_wmi_accel_setup(void) { int err; - err = acer_wmi_get_handle("SENR", "BST0001", &gsensor_handle); + err = acer_wmi_get_handle("SENR", ACER_WMID_ACCEL_HID, &gsensor_handle); if (err) return err; @@ -2262,10 +2275,11 @@ static int __init acer_wmi_init(void) err = acer_wmi_input_setup(); if (err) return err; + err = acer_wmi_accel_setup(); + if (err) + return err; } - acer_wmi_accel_setup(); - err = platform_driver_register(&acer_platform_driver); if (err) { pr_err("Unable to register platform driver\n"); -- 2.8.0.rc2.1.gbe9624a
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