Messages in this thread | | | Subject | Re: [PATCH net-next] ieee802154: ca8210: remove a dead branch | From | YueHaibing <> | Date | Tue, 11 Dec 2018 09:51:31 +0800 |
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On 2018/12/11 4:04, David Miller wrote: > From: YueHaibing <yuehaibing@huawei.com> > Date: Mon, 10 Dec 2018 19:34:43 +0800 > >> Fix follwing gcc warning: >> >> drivers/net/ieee802154/ca8210.c:730:10: warning: >> comparison is always false due to limited range of data type [-Wtype-limits] >> >> the variable 'len' is of type u8 and cannot greater than >> CA8210_SPI_BUF_SIZE , which is 256. >> >> Signed-off-by: YueHaibing <yuehaibing@huawei.com> > > Then bug is the variable type here. > > We are reading a u8 from buf[], then adding 2, which can overflow. > > 'len' should be an unsigned int or similar.
Oh, Yes, will do it in v2.
> > . >
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