ACPICA: Fix parameter validation for acpi_read/write
authorBob Moore <robert.moore@intel.com>
Wed, 18 Feb 2009 06:28:02 +0000 (14:28 +0800)
committerLen Brown <len.brown@intel.com>
Thu, 26 Mar 2009 20:38:25 +0000 (16:38 -0400)
commitac0c84502697114a378057eed83a9baba879cfc9
tree83d1533a4783e6b5ffe5385a7dead57f1dfcf7bb
parentaefc7f9a0220a40beff9b6b3b320cbeae128d0e3
ACPICA: Fix parameter validation for acpi_read/write

Now return AE_BAD_PARAMETER if the input register pointer is
null, and AE_BAD_ADDRESS if the register has an address of zero.
Previously, these cases simply returned AE_OK. For optional
registers such as PM1B status/enable/control, the caller should
check for a valid register address before calling.  ACPICA BZ 748.

http://www.acpica.org/bugzilla/show_bug.cgi?id=748

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
drivers/acpi/acpica/hwxface.c
include/acpi/acexcep.h