mirror of https://gitee.com/openkylin/linux.git
7cfc4ea78f
When main component is not probed, by example when the dw-hdmi module is
not loaded yet or in probe defer, the following crash appears on shutdown:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000038
...
pc : meson_drv_shutdown+0x24/0x50
lr : platform_drv_shutdown+0x20/0x30
...
Call trace:
meson_drv_shutdown+0x24/0x50
platform_drv_shutdown+0x20/0x30
device_shutdown+0x158/0x360
kernel_restart_prepare+0x38/0x48
kernel_restart+0x18/0x68
__do_sys_reboot+0x224/0x250
__arm64_sys_reboot+0x24/0x30
...
Simply check if the priv struct has been allocated before using it.
Fixes:
|
||
|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| meson_crtc.c | ||
| meson_crtc.h | ||
| meson_drv.c | ||
| meson_drv.h | ||
| meson_dw_hdmi.c | ||
| meson_dw_hdmi.h | ||
| meson_osd_afbcd.c | ||
| meson_osd_afbcd.h | ||
| meson_overlay.c | ||
| meson_overlay.h | ||
| meson_plane.c | ||
| meson_plane.h | ||
| meson_rdma.c | ||
| meson_rdma.h | ||
| meson_registers.h | ||
| meson_vclk.c | ||
| meson_vclk.h | ||
| meson_venc.c | ||
| meson_venc.h | ||
| meson_venc_cvbs.c | ||
| meson_venc_cvbs.h | ||
| meson_viu.c | ||
| meson_viu.h | ||
| meson_vpp.c | ||
| meson_vpp.h | ||