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
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