diff options
| -rw-r--r-- | drivers/net/wireless/libertas/cmd.h | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h index 6efb81ec597..b9ab85cc791 100644 --- a/drivers/net/wireless/libertas/cmd.h +++ b/drivers/net/wireless/libertas/cmd.h @@ -6,13 +6,15 @@ #include "hostcmd.h" #include "dev.h" -#define lbs_cmd(priv, cmdnr, cmd, cb, cb_arg) \ - __lbs_cmd(priv, cmdnr, &(cmd)->hdr, sizeof(*(cmd)), cb, cb_arg) +/* lbs_cmd() infers the size of the buffer to copy data back into, from + the size of the target of the pointer. Since the command to be sent + may often be smaller, that size is set in cmd->size by the caller.*/ +#define lbs_cmd(priv, cmdnr, cmd, cb, cb_arg) ({ \ + uint16_t __sz = le16_to_cpu((cmd)->hdr.size); \ + (cmd)->hdr.size = cpu_to_le16(sizeof(*(cmd))); \ + __lbs_cmd(priv, cmdnr, &(cmd)->hdr, __sz, cb, cb_arg); \ +}) - -/* lbs_cmd_with_response() infers the size of the command to be _sent_ - and requires that the caller sets cmd->size to the (LE) size of - the _response_ buffer. */ #define lbs_cmd_with_response(priv, cmdnr, cmd) \ lbs_cmd(priv, cmdnr, cmd, lbs_cmd_copyback, (unsigned long) (cmd)) |