Krzysztof Kozlowski 785c9f411e clk: samsung: exynos5: Fix kfree() of const memory on setting driver_override ...

Platform driver driver_override field should not be initialized from
const memory because the core later kfree() it.  If driver_override is
manually set later through sysfs, kfree() of old value leads to:

    $ echo "new_value" > /sys/bus/platform/drivers/.../driver_override

    kernel BUG at ../mm/slub.c:3960!
    Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM
    ...
    (kfree) from [<c058e8c0>] (platform_set_driver_override+0x84/0xac)
    (platform_set_driver_override) from [<c058e908>] (driver_override_store+0x20/0x34)
    (driver_override_store) from [<c031f778>] (kernfs_fop_write+0x100/0x1dc)
    (kernfs_fop_write) from [<c0296de8>] (__vfs_write+0x2c/0x17c)
    (__vfs_write) from [<c02970c4>] (vfs_write+0xa4/0x188)
    (vfs_write) from [<c02972e8>] (ksys_write+0x4c/0xac)
    (ksys_write) from [<c0101000>] (ret_fast_syscall+0x0/0x28)

The clk-exynos5-subcmu driver uses override only for the purpose of
creating meaningful names for children devices (matching names of power
domains, e.g. DISP, MFC).  The driver_override was not developed for
this purpose so just switch to default names of devices to fix the
issue.

Fixes: b06a532bf1fa ("clk: samsung: Add Exynos5 sub-CMU clock driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

2019-02-21 13:33:00 -08:00

..

clk-cpu.c

clk: samsung: Use clk_hw API for calling clk framework from clk notifiers

2018-10-05 13:36:39 +02:00

clk-cpu.h

clk: samsung: Use clk_hw API for calling clk framework from clk notifiers

2018-10-05 13:36:39 +02:00

clk-exynos4.c

clk: samsung: Remove obsolete code for Exynos4412 ISP clocks

2018-10-05 13:36:35 +02:00

clk-exynos5-subcmu.c

clk: samsung: exynos5: Fix kfree() of const memory on setting driver_override

2019-02-21 13:33:00 -08:00

clk-exynos5-subcmu.h

clk: samsung: Add Exynos5 sub-CMU clock driver

2018-03-06 17:38:46 +01:00

clk-exynos7.c

clk: samsung: Add compile time PLL rate validators

2018-02-23 15:15:20 +01:00

clk-exynos3250.c

clk: samsung: Remove excessive include

2018-09-06 20:45:44 +02:00

clk-exynos4412-isp.c

clk: samsung: Remove unused mout_user_aclk400_mcuisp_p4x12 variable

2018-07-26 00:38:51 -07:00

clk-exynos5250.c

clk: samsung: exynos5250: Use generic helper for handling suspend/resume

2018-10-05 13:36:30 +02:00

clk-exynos5260.c

clk: samsung: Add compile time PLL rate validators

2018-02-23 15:15:20 +01:00

clk-exynos5260.h

clk/exynos5260: add clock file for exynos5260

2014-05-14 19:16:55 +02:00

clk-exynos5410.c

clk: samsung: Add compile time PLL rate validators

2018-02-23 15:15:20 +01:00

clk-exynos5420.c

clk: samsung: exynos5420: Enable PERIS clocks for suspend

2018-10-05 13:36:38 +02:00

clk-exynos5433.c

clk: samsung: exynos5433: Add selected IMEM clocks

2019-02-01 14:36:47 +01:00

clk-exynos-audss.c

clk: samsung: Remove excessive include

2018-09-06 20:45:44 +02:00

clk-exynos-clkout.c

treewide: Use struct_size() for kmalloc()-family

2018-06-06 11:15:43 -07:00

clk-pll.c

clk/samsung updates for v4.15

2017-10-25 02:37:03 -07:00

clk-pll.h

clk: samsung: Add compile time PLL rate validators

2018-02-23 15:15:20 +01:00

clk-s3c64xx.c

clk: samsung: s3c64xx: Use generic helper for handling suspend/resume

2018-10-05 13:35:37 +02:00

clk-s3c2410-dclk.c

clk: samsung: s3c2410: Remove usage of CLK_IS_BASIC

2018-12-10 14:44:08 -08:00

clk-s3c2410.c

clk: samsung: s3c2410: Use generic helper for handling suspend/resume

2018-09-06 20:46:47 +02:00

clk-s3c2412.c

clk: samsung: s3c2412: Use generic helper for handling suspend/resume

2018-09-06 20:47:01 +02:00

clk-s3c2443.c

clk: samsung: s3c2443: Use generic helper for handling suspend/resume

2018-09-06 20:47:08 +02:00

clk-s5pv210-audss.c

treewide: Use struct_size() for devm_kmalloc() and friends

2018-06-06 11:15:43 -07:00

clk-s5pv210.c

clk: samsung: s5pv210: Use generic helper for handling suspend/resume

2018-10-05 13:36:29 +02:00

clk.c

clk: samsung: Add support for setting registers state before suspend

2018-10-05 13:36:31 +02:00

clk.h

clk: samsung: Add support for setting registers state before suspend

2018-10-05 13:36:31 +02:00

Kconfig

clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver

2016-07-13 14:59:53 -07:00

Makefile

clk: samsung: Remove support for Exynos5440

2018-07-24 18:43:52 +02:00