lkml.org 
[lkml]   [2022]   [May]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH v2] drm/msm/disp/dpu1: avoid clearing hw interrupts if hw_intr is null during drm uninit
Quoting Vinod Polimera (2022-05-02 09:44:06)
> If edp modeset init is failed due to panel being not ready and
> probe defers during drm bind, avoid clearing irqs and derefernce

s/derefernce/dereference/

> hw_intr when hw_intr is null.
>
> BUG: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
>
> Call trace:
> dpu_core_irq_uninstall+0x50/0xb0
> dpu_irq_uninstall+0x18/0x24
> msm_drm_uninit+0xd8/0x16c
> msm_drm_bind+0x580/0x5fc
> try_to_bring_up_master+0x168/0x1c0
> __component_add+0xb4/0x178
> component_add+0x1c/0x28
> dp_display_probe+0x38c/0x400
> platform_probe+0xb0/0xd0
> really_probe+0xcc/0x2c8
> __driver_probe_device+0xbc/0xe8
> driver_probe_device+0x48/0xf0
> __device_attach_driver+0xa0/0xc8
> bus_for_each_drv+0x8c/0xd8
> __device_attach+0xc4/0x150
> device_initial_probe+0x1c/0x28
>
> Changes in V2:
> - Update commit message and coreect fixes tag.
>
> Fixes: f25f656608e3 ("drm/msm/dpu: merge struct dpu_irq into struct dpu_hw_intr")
> Signed-off-by: Vinod Polimera <quic_vpolimer@quicinc.com>
> ---

Reviewed-by: Stephen Boyd <swboyd@chromium.org>

\
 
 \ /
  Last update: 2022-05-02 22:43    [W:0.030 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site