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greybus: define struct greybus_manifest 

Define a structure that describes the entire greybus manifest.
Adjust greybus_new_module() to use that, making it explicit that
it's not just a header that's being provided to that function.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
This commit is contained in:
Alex Elder 2014-09-09 13:55:04 -05:00 committed by Greg Kroah-Hartman
parent 05ad189c23
commit badad68e3a
2 changed files with 13 additions and 8 deletions
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16
drivers/staging/greybus/core.c
View File

@ -353,7 +353,7 @@ struct greybus_device *greybus_new_module(struct device *parent,
int module_number, u8 *data, int size)
{
struct greybus_device *gdev;
struct greybus_manifest_header *header;
struct greybus_manifest *manifest;
struct greybus_descriptor *desc;
int retval;
int overall_size;
@ -362,7 +362,7 @@ struct greybus_device *greybus_new_module(struct device *parent,
u8 version_minor;
/* we have to have at _least_ the manifest header */
if (size <= sizeof(struct greybus_manifest_header))
if (size <= sizeof(manifest->header))
return NULL;
gdev = kzalloc(sizeof(*gdev), GFP_KERNEL);
@ -379,21 +379,21 @@ struct greybus_device *greybus_new_module(struct device *parent,
device_initialize(&gdev->dev);
dev_set_name(&gdev->dev, "%d", module_number);
header = (struct greybus_manifest_header *)data;
overall_size = le16_to_cpu(header->size);
manifest = (struct greybus_manifest *)data;
overall_size = le16_to_cpu(manifest->header.size);
if (overall_size != size) {
dev_err(parent, "size != manifest header size, %d != %d\n",
size, overall_size);
goto error;
}
version_major = header->version_major;
version_minor = header->version_minor;
version_major = manifest->header.version_major;
version_minor = manifest->header.version_minor;
// FIXME - check version major/minor here!
size -= sizeof(struct greybus_manifest_header);
data += sizeof(struct greybus_manifest_header);
size -= sizeof(manifest->header);
data += sizeof(manifest->header);
while (size > 0) {
desc = (struct greybus_descriptor *)data;
desc_size = le16_to_cpu(desc->header.size);

5
drivers/staging/greybus/greybus_manifest.h
View File

@ -94,6 +94,11 @@ struct greybus_descriptor {
};
};
struct greybus_manifest {
struct greybus_manifest_header header;
struct greybus_descriptor descriptors[0];
};
#pragma pack(pop)
#endif /* __GREYBUS_DESC_H */