[PATCH 07/10] i2c: i801: Improve i801_acpi_probe/remove functions
From: Heiner Kallweit <hkallweit1@gmail.com>
Date: 2021-08-01 14:24:55
Subsystem:
i2c subsystem, i2c subsystem host drivers, i2c/smbus controller drivers for pc, the rest · Maintainers:
Andi Shyti, Jean Delvare, Linus Torvalds
By using ACPI_HANDLE() the handler argument can be retrieved directly. Both address space handler functions check the handler argument and return an error if it's NULL. This allows to further simplify the code. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> --- drivers/i2c/busses/i2c-i801.c | 23 +++++++---------------- 1 file changed, 7 insertions(+), 16 deletions(-)
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 5b9eebc1c..5fa8dc1cb 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c@@ -1633,31 +1633,22 @@ i801_acpi_io_handler(u32 function, acpi_physical_address address, u32 bits, static int i801_acpi_probe(struct i801_priv *priv) { - struct acpi_device *adev; + acpi_handle ah = ACPI_HANDLE(&priv->pci_dev->dev); acpi_status status; - adev = ACPI_COMPANION(&priv->pci_dev->dev); - if (adev) { - status = acpi_install_address_space_handler(adev->handle, - ACPI_ADR_SPACE_SYSTEM_IO, i801_acpi_io_handler, - NULL, priv); - if (ACPI_SUCCESS(status)) - return 0; - } + status = acpi_install_address_space_handler(ah, ACPI_ADR_SPACE_SYSTEM_IO, + i801_acpi_io_handler, NULL, priv); + if (ACPI_SUCCESS(status)) + return 0; return acpi_check_resource_conflict(&priv->pci_dev->resource[SMBBAR]); } static void i801_acpi_remove(struct i801_priv *priv) { - struct acpi_device *adev; - - adev = ACPI_COMPANION(&priv->pci_dev->dev); - if (!adev) - return; + acpi_handle ah = ACPI_HANDLE(&priv->pci_dev->dev); - acpi_remove_address_space_handler(adev->handle, - ACPI_ADR_SPACE_SYSTEM_IO, i801_acpi_io_handler); + acpi_remove_address_space_handler(ah, ACPI_ADR_SPACE_SYSTEM_IO, i801_acpi_io_handler); } #else static inline int i801_acpi_probe(struct i801_priv *priv) { return 0; }
--
2.32.0