Hi,
The problem
===========
Several device types (platform, amba, spi etc.) provide a driver_override
field. On sysfs store or during device removal, they kfree() the
existing value.
However the users are unaware of this and set the driver_override like:
pdev->driver_override = "exynos5-subcmu";
which obviously leads to error.
Solution
========
I provided simple helper for platform device. If this approach is
acceptable, I can convert also other buses, like AMBA, SPI.
Dependencies and pick up order
==============================
Patch 1: please pick it as is through clock tree
Patch 3: Depends on patch 1 (merge conflict) and 2.
Patch 4: Depends on patch 2.
Best regards,
Krzysztof
Krzysztof Kozlowski (4):
clk: samsung: exynos5: Fix possible NULL pointer exception on
platform_device_alloc() failure
driver: platform: Provide helper for safer setting of driver_override
clk: samsung: exynos5: Fix kfree() of const memory on setting
driver_override
slimbus: ngd: Fix kfree() of const memory on setting driver_override
drivers/base/platform.c | 63 ++++++++++++++++++++++----------
drivers/clk/samsung/clk-exynos5-subcmu.c | 12 ++++--
drivers/slimbus/qcom-ngd-ctrl.c | 2 +-
include/linux/platform_device.h | 9 ++++-
4 files changed, 61 insertions(+), 25 deletions(-)
--
2.7.4
