On Thu, 1 Nov 2012, Francesco Lavra wrote: [...]
+ btech = of_get_property(np_bat_supply, + "stericsson,battery-type", NULL); + if (!btech) { + dev_warn(dev, "missing property battery-name/type\n"); + strcpy(bat_tech, "UNKNOWN"); + } else { + strcpy(bat_tech, btech); + }I don't get the point of declaring the char array and copying the string in it, when you could simply use just the pointer returned by of_get_property().
I am considering a corner case where in 'battery-type' property is not present and battery is connected.In this case i promote battery to UNKNOWN from null. FYI: Further, btemp driver will identify the connected battery based on resistance value and decide to use. Ref: ab8500_btemp_id(...) ab8500_btemp.c
Anyway, if the string property is longer than 8 characters, you are writing past the size of the destination array.
i believe it is safe as power_supply.h comprises defines having battery technology type in 4 characters length which is normally the case and 7 chars length being "UNKNOWN" seldom referred -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
