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authorIvo van Doorn <IvDoorn@gmail.com>2011-04-18 09:27:06 -0400
committerJohn W. Linville <linville@tuxdriver.com>2011-04-19 15:39:11 -0400
commit7dab73b37f5e8885cb73efd25e73861f9b4f0246 (patch)
tree3c09412e1ec0b02eaf193879aed12db0f9874f7c /kernel/groups.c
parent62fe778412b36791b7897cfa139342906fbbf07b (diff)
rt2x00: Split rt2x00dev->flags
The number of flags defined for the rt2x00dev->flags field, has been growing over the years. Currently we are approaching the maximum number of bits which are available in the field. A secondary problem, is that one part of the field are initialized only during boot, because the driver requirements are initialized or device requirements are loaded from the EEPROM. In both cases, the flags are fixed and will not change during device operation. The other flags are the device state, and will change frequently. So far this resulted in the fact that for some flags, the atomic bit accessors are used, while for the others the non-atomic variants are used. By splitting the flags up into a "flags" and "cap_flags" we can put all flags which are fixed inside "cap_flags". This field can then be read non-atomically. In the "flags" field we keep the device state, which is going to be read atomically. This adds more room for more flags in the future, and sanitizes the field access methods. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Acked-by: Helmut Schaa <helmut.schaa@googlemail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'kernel/groups.c')
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