On Sat, Dec 21, 2013 at 07:31:08PM -0600, Larry Finger wrote: > Please tell me if the following fixes are appropriate. In particular, I am uncertain of > the __force attributes. > > Thanks, > > Larry > > > Sparse lists the following: > > CHECK drivers/staging/rtl8188eu/core/rtw_br_ext.c > drivers/staging/rtl8188eu/core/rtw_br_ext.c:1156:63: warning: restricted __sum16 degrades to integer > drivers/staging/rtl8188eu/core/rtw_br_ext.c:1160:69: warning: incorrect type in assignment (different base types) > drivers/staging/rtl8188eu/core/rtw_br_ext.c:1160:69: expected restricted __sum16 [usertype] check > drivers/staging/rtl8188eu/core/rtw_br_ext.c:1160:69: got int > > --- > drivers/staging/rtl8188eu/core/rtw_br_ext.c | 47 +++++++++++++++-------------- > 1 file changed, 24 insertions(+), 23 deletions(-) > > diff --git a/drivers/staging/rtl8188eu/core/rtw_br_ext.c b/drivers/staging/rtl8188eu/core/rtw_br_ext.c > index 5425bc5..54a706f 100644 > --- a/drivers/staging/rtl8188eu/core/rtw_br_ext.c > +++ b/drivers/staging/rtl8188eu/core/rtw_br_ext.c > > @@ -1153,11 +1154,11 @@ void dhcp_flag_bcast(struct adapter *priv, struct sk_buff *skb) > /* or BROADCAST flag */ > dhcph->flags |= htons(BROADCAST_FLAG); > /* recalculate checksum */ > - sum = ~(udph->check) & 0xffff; > + sum = (__force int)(~(udph->check)) & 0xffff; > sum += be16_to_cpu(dhcph->flags); > while (sum >> 16) > sum = (sum & 0xffff) + (sum >> 16); > - udph->check = ~sum; > + udph->check = (__force __sum16)(~sum); I thought __force was only "needed" when trying to move between user and kernel pointer types, I didn't think it was needed for stuff like this. But I really don't know what __sum16 is, so I can't say for sure, sorry. greg k-h _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
