Hello, On Fri, Jul 22, 2016 at 02:41:52AM +0800, tom.ty89@xxxxxxxxx wrote: > From: Tom Yan <tom.ty89@xxxxxxxxx> > > ata_mselect_*() would initialize a char array for storing a copy of > the current mode page. However, if char was actually signed char, > overflow could occur. Do you mean sign extension? > For example, `0xff` from def_control_mpage[] would be "truncated" > to `-1`. This prevented ata_mselect_control() from working at all, > since when it did the read-only bits check, there would always be > a mismatch. Heh, the description doesn't really make sense. Are you talking about something like the following? char ar[N]; int i; i = ar[x]; if (i == 0xff) asdf; If so, the description isn't quite right. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
