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| author | Hans de Goede <hdegoede@redhat.com> | 2020-10-19 20:56:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-03-11 14:05:01 +0100 |
| commit | 0ce1d577530a950869b7a25d73280a8561efd5d9 (patch) | |
| tree | 4dc0afff824efd9c139b2095364971b32443afb7 | |
| parent | 626694f7a8c2d5743dd3c06e58f3721d5566091a (diff) | |
| download | linux-0ce1d577530a950869b7a25d73280a8561efd5d9.tar.gz linux-0ce1d577530a950869b7a25d73280a8561efd5d9.tar.bz2 linux-0ce1d577530a950869b7a25d73280a8561efd5d9.zip | |
platform/x86: acer-wmi: Cleanup accelerometer device handling
[ Upstream commit 9feb0763e4985ccfae632de3bb2f029cc8389842 ]
Cleanup accelerometer device handling:
-Drop acer_wmi_accel_destroy instead directly call input_unregister_device.
-The information tracked by the CAP_ACCEL flag mirrors acer_wmi_accel_dev
being NULL. Drop the CAP flag, this is a preparation change for allowing
users to override the capability flags. Dropping the flag stops users
from causing a NULL pointer dereference by forcing the capability.
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20201019185628.264473-3-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/platform/x86/acer-wmi.c | 20 |
1 files changed, 6 insertions, 14 deletions
diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c index 8d06454f5915..b95dce2475ab 100644 --- a/drivers/platform/x86/acer-wmi.c +++ b/drivers/platform/x86/acer-wmi.c @@ -224,7 +224,6 @@ struct hotkey_function_type_aa { #define ACER_CAP_BLUETOOTH BIT(2) #define ACER_CAP_BRIGHTNESS BIT(3) #define ACER_CAP_THREEG BIT(4) -#define ACER_CAP_ACCEL BIT(5) /* * Interface type flags @@ -1526,7 +1525,7 @@ static int acer_gsensor_event(void) struct acpi_buffer output; union acpi_object out_obj[5]; - if (!has_cap(ACER_CAP_ACCEL)) + if (!acer_wmi_accel_dev) return -1; output.length = sizeof(out_obj); @@ -1935,8 +1934,6 @@ static int __init acer_wmi_accel_setup(void) if (err) return err; - interface->capability |= ACER_CAP_ACCEL; - acer_wmi_accel_dev = input_allocate_device(); if (!acer_wmi_accel_dev) return -ENOMEM; @@ -1962,11 +1959,6 @@ err_free_dev: return err; } -static void acer_wmi_accel_destroy(void) -{ - input_unregister_device(acer_wmi_accel_dev); -} - static int __init acer_wmi_input_setup(void) { acpi_status status; @@ -2121,7 +2113,7 @@ static int acer_resume(struct device *dev) if (has_cap(ACER_CAP_BRIGHTNESS)) set_u32(data->brightness, ACER_CAP_BRIGHTNESS); - if (has_cap(ACER_CAP_ACCEL)) + if (acer_wmi_accel_dev) acer_gsensor_init(); return 0; @@ -2329,8 +2321,8 @@ error_device_alloc: error_platform_register: if (wmi_has_guid(ACERWMID_EVENT_GUID)) acer_wmi_input_destroy(); - if (has_cap(ACER_CAP_ACCEL)) - acer_wmi_accel_destroy(); + if (acer_wmi_accel_dev) + input_unregister_device(acer_wmi_accel_dev); return err; } @@ -2340,8 +2332,8 @@ static void __exit acer_wmi_exit(void) if (wmi_has_guid(ACERWMID_EVENT_GUID)) acer_wmi_input_destroy(); - if (has_cap(ACER_CAP_ACCEL)) - acer_wmi_accel_destroy(); + if (acer_wmi_accel_dev) + input_unregister_device(acer_wmi_accel_dev); remove_debugfs(); platform_device_unregister(acer_platform_device); |