USB: fsl_udc_core: Fix kernel oops on module removal
fsl_udc_release() calls dma_free_coherent() with an inappropriate
device passed to it, and since the device has no dma_ops, the following
oops pops up:
Kernel BUG at
d103ce9c [verbose debug info unavailable]
Oops: Exception in kernel mode, sig: 5 [#1]
...
NIP [
d103ce9c] fsl_udc_release+0x50/0x80 [fsl_usb2_udc]
LR [
d103ce74] fsl_udc_release+0x28/0x80 [fsl_usb2_udc]
Call Trace:
[
cfbc7dc0] [
d103ce74] fsl_udc_release+0x28/0x80 [fsl_usb2_udc]
[
cfbc7dd0] [
c01a35c4] device_release+0x2c/0x90
[
cfbc7de0] [
c016b480] kobject_cleanup+0x58/0x98
[
cfbc7e00] [
c016c52c] kref_put+0x54/0x6c
[
cfbc7e10] [
c016b360] kobject_put+0x34/0x64
[
cfbc7e20] [
c01a1d0c] put_device+0x1c/0x2c
[
cfbc7e30] [
d103dbfc] fsl_udc_remove+0xc0/0x1e4 [fsl_usb2_udc]
...
This patch fixes the issue by passing dev->parent, which points to
a correct device.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Li Yang <leoli@freescale.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
projects / GitHub / LineageOS / android_kernel_motorola_exynos9610.git / commit