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* power: generic-adc-battery: check for duplicate properties copied from iio ↵H. Nikolaus Schaller2018-07-061-2/+13
| | | | | | | | | | | | | | | channels If an iio channel defines a basic property, there are duplicate entries in /sys/class/power/*/uevent. So add a check to avoid duplicates. Since all channels may be duplicates, we have to modify the related error check. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Cc: stable@vger.kernel.org Fixes: e60fea794e6e ("power: battery: Generic battery driver using IIO") Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* power: generic-adc-battery: fix out-of-bounds write when copying channel ↵H. Nikolaus Schaller2018-07-061-10/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | properties We did have sporadic problems in the pinctrl framework during boot where a pin group name unexpectedly became NULL leading to a NULL dereference in strcmp. Detailled analysis of the failing cases did reveal that there were two devm allocated objects close to each other. The second one was the affected group_desc in pinmux and the first one was the psy_desc->properties buffer of the gab driver. Review of the gab code showed that the address calculation for one memcpy() is wrong. It does properties + sizeof(type) * index but C is defined to do the index multiplication already for pointer + integer additions. Hence the factor was applied twice and the memcpy() does write outside of the properties buffer. Sometimes it happened to be the pinctrl and triggered the strcmp(NULL). Anyways, it is overkill to use a memcpy() here instead of a simple assignment, which is easier to read and has less risk for wrong address calculations. So we change code to a simple assignment. If we initialize the index to the first free location, we can even remove the local variable 'properties'. This bug seems to exist right from the beginning in 3.7-rc1 in commit e60fea794e6e ("power: battery: Generic battery driver using IIO") Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Cc: stable@vger.kernel.org Fixes: e60fea794e6e ("power: battery: Generic battery driver using IIO") Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* power: supply: generic-adc-battery: remove redundant variable pdataColin Ian King2017-11-061-2/+0Star
| | | | | | | | | | | Pointer pdata is assigned but never used, so remove it. Cleans up the clang warning: drivers/power/supply/generic-adc-battery.c:211:2: warning: Value stored to 'pdata' is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* power: supply: generic-adc-battery: use SIMPLE_DEV_PM_OPS helper macroRahul Bedarkar2017-05-011-13/+4Star
| | | | | | | Replace ifdefs with SIMPLE_DEV_PM_OPS helper macro. Signed-off-by: Rahul Bedarkar <rahulbedarkar89@gmail.com> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
* power: move power supply drivers to power/supplySebastian Reichel2016-08-111-0/+432
This moves all power supply drivers from drivers/power/ to drivers/power/supply/. The intention is a cleaner source tree, since drivers/power/ also contains frameworks unrelated to power supply, like adaptive voltage scaling. Signed-off-by: Sebastian Reichel <sre@kernel.org>