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greybus: rework message initialization 

Rework gb_opreation_message_init() so it doesn't use a struct gbuf
local variable.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
This commit is contained in:
Alex Elder 2014-11-18 13:26:47 -06:00 committed by Greg Kroah-Hartman
parent 58a5bdc735
commit 6a70736aca
1 changed files with 7 additions and 9 deletions
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16
drivers/staging/greybus/operation.c
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@ -228,7 +228,6 @@ static int gb_operation_message_init(struct gb_operation *operation,
struct greybus_host_device *hd = connection->hd;
struct gb_message *message;
struct gb_operation_msg_hdr *header;
struct gbuf *gbuf;
gfp_t gfp_flags = request && !outbound ? GFP_ATOMIC : GFP_KERNEL;
u16 dest_cport_id;
@ -242,23 +241,22 @@ static int gb_operation_message_init(struct gb_operation *operation,
message = &operation->response;
type |= GB_OPERATION_TYPE_RESPONSE;
}
gbuf = &message->gbuf;
if (outbound)
dest_cport_id = connection->interface_cport_id;
else
dest_cport_id = CPORT_ID_BAD;
gbuf->transfer_buffer = hd->driver->buffer_alloc(size, gfp_flags);
if (!gbuf->transfer_buffer)
message->gbuf.transfer_buffer = hd->driver->buffer_alloc(size, gfp_flags);
if (!message->gbuf.transfer_buffer)
return -ENOMEM;
gbuf->transfer_buffer_length = size;
gbuf->hd = hd;
gbuf->dest_cport_id = dest_cport_id;
gbuf->status = -EBADR; /* Initial value--means "never set" */
message->gbuf.transfer_buffer_length = size;
message->gbuf.hd = hd;
message->gbuf.dest_cport_id = dest_cport_id;
message->gbuf.status = -EBADR; /* Initial value--means "never set" */
/* Fill in the header structure */
header = (struct gb_operation_msg_hdr *)gbuf->transfer_buffer;
header = message->gbuf.transfer_buffer;
header->size = cpu_to_le16(size);
header->id = 0; /* Filled in when submitted */
header->type = type;