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authorAlan Jenkins <alan-jenkins@tuffmail.co.uk>2009-12-03 10:44:47 +0300
committerLen Brown <len.brown@intel.com>2009-12-09 23:54:30 +0300
commit2d5db0be4ce36b265f9ddd8debab40acd8580403 (patch)
tree1d6f838397666ff07835279d93dd9594b90ca374 /Documentation/io_ordering.txt
parent1df8d8d4efb7bce0e44d2aa91c4c0fa7ffe613c0 (diff)
downloadlinux-2d5db0be4ce36b265f9ddd8debab40acd8580403.tar.xz
asus-acpi: 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>
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