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| author | Alex Elder <elder@linaro.org> | 2014-09-30 19:25:21 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <greg@kroah.com> | 2014-09-30 18:19:12 -0700 |
| commit | 1cfc667d75d3a38989365da387f52a1c303c435d (patch) | |
| tree | 43c8a7c25a91d0dd807ca7f2ac91acf3f5f1224b /drivers/staging/greybus/kernel_ver.h | |
| parent | f0f70916fba72ca70235ca40db43030ec8f467ad (diff) | |
| download | op-kernel-dev-1cfc667d75d3a38989365da387f52a1c303c435d.zip op-kernel-dev-1cfc667d75d3a38989365da387f52a1c303c435d.tar.gz | |
greybus: kill struct gmod_cport
A UniPro (short header) segment has a 5-bit field to represent a
CPort Id. In addition, the 7-bit L3 short header holds a UniPro
device id. There can be no more than 128 devices in a UniPro
network, but these two fields can be combined in ways to allow for
over 2000 CPorts within a single device. As a result, a device id
is represented with one byte, and a CPort Id within a device is
always representable with a two byte value.
This patch changes integral values that reresent CPort Ids so they
use type u16 consistently.
Separately, the contents of the gmod_cport structure were mostly
fabricated, with the cport_id field being the only one that's
meaningful. This patch gets rid of that structure, putting a
simple u16 to represent the CPort Id everywhere it had been used
before.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
Diffstat (limited to 'drivers/staging/greybus/kernel_ver.h')
| -rw-r--r-- | drivers/staging/greybus/kernel_ver.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/greybus/kernel_ver.h b/drivers/staging/greybus/kernel_ver.h index 40cc2e8..4aa5b83 100644 --- a/drivers/staging/greybus/kernel_ver.h +++ b/drivers/staging/greybus/kernel_ver.h @@ -18,5 +18,8 @@ struct device_attribute dev_attr_##_name = __ATTR_RO(_name) #endif +#ifndef U8_MAX +#define U8_MAX ((u8)~0U) +#endif /* ! U8_MAX */ #endif /* __GREYBUS_KERNEL_VER_H */ |
