diff options
| author | Alan Jenkins <alan-jenkins@tuffmail.co.uk> | 2009-12-03 07:44:53 +0000 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-12-09 15:54:30 -0500 |
| commit | fbe3d8942e8fd1e947e4d11a3e9e15675a1cac7e (patch) | |
| tree | 59325f54e9f2d10d8bfea3a2a1ae5ca82d181c1d /drivers/platform/x86/eeepc-laptop.c | |
| parent | 3c0eb510697dbbb53674c72544350624a04ab5b4 (diff) | |
eeepc-laptop: Remove redundant NULL checks
The acpi device callbacks add, start, remove, suspend and resume can
never be called with a NULL acpi_device. Each callsite in acpi/scan.c
has to dereference the device in order to get the ops structure, e.g.
struct acpi_device *acpi_dev = to_acpi_device(dev);
struct acpi_driver *acpi_drv = acpi_dev->driver;
if (acpi_drv && acpi_drv->ops.suspend)
return acpi_drv->ops.suspend(acpi_dev, state);
Remove all checks for acpi_dev == NULL within these callbacks.
Also remove the checks for acpi_driver_data(acpi_dev) == NULL. None of
these checks could fail unless the driver does something strange
(which none of them do), the acpi core did something terribly wrong,
or we have a memory corruption issue. If this does happen then it's
best to dereference the pointer and crash noisily.
Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/platform/x86/eeepc-laptop.c')
| -rw-r--r-- | drivers/platform/x86/eeepc-laptop.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c index 91304342f8b6..7dde47a67997 100644 --- a/drivers/platform/x86/eeepc-laptop.c +++ b/drivers/platform/x86/eeepc-laptop.c @@ -1255,8 +1255,6 @@ static int __devinit eeepc_hotk_add(struct acpi_device *device) struct device *dev; int result; - if (!device) - return -EINVAL; pr_notice(EEEPC_HOTK_NAME "\n"); ehotk = kzalloc(sizeof(struct eeepc_hotk), GFP_KERNEL); if (!ehotk) @@ -1343,9 +1341,6 @@ fail_platform_driver: static int eeepc_hotk_remove(struct acpi_device *device, int type) { - if (!device || !acpi_driver_data(device)) - return -EINVAL; - eeepc_backlight_exit(); eeepc_rfkill_exit(); eeepc_input_exit(); |