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| author |  Mike Dunn <mikedunn@newsguy.com>
| 2013-08-08 10:00:37 -0700 |
|---|---|---|
| committer |  Thierry Reding <thierry.reding@gmail.com>
| 2013-09-03 13:09:17 +0200 |
| commit | 1e185c7aafbb56580feaa5bdbc9e4b1d8efaf710 (patch) | |
| tree | 802a9dd5436b907cb78355599674ac7e085d620a /drivers/pwm/pwm-spear.c | |
| parent | pwm: tiehrpwm: add missing __iomem annotation (diff) | |
| download | linux-1e185c7aafbb56580feaa5bdbc9e4b1d8efaf710.tar.gz linux-1e185c7aafbb56580feaa5bdbc9e4b1d8efaf710.tar.bz2 linux-1e185c7aafbb56580feaa5bdbc9e4b1d8efaf710.zip | |
pwm: pxa: Use module_platform_driver
Commit 76abbdde2d95a3807d0dc6bf9f84d03d0dbd4f3d
pwm: Add sysfs interface
causes a kernel oops due to a null pointer dereference on PXA platforms.
This happens because the class added by the patch is registered in a
subsys_initcall (initcall4), but the pxa pwm driver is registered in
arch_initcall (initcall3). If the class is not registered before the
driver probe function runs, the oops occurs in device_add() when the
uninitialized pointers in struct class are dereferenced. I don't see a
reason that the driver must be an arch_initcall, so this patch makes it
a regular module_platform_driver (initcall6), preventing the oops.
Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-spear.c')
0 files changed, 0 insertions, 0 deletions