mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-10 12:57:06 +09:00
3a28e9287f
On RK3328, dw-hdmi HDCP driver is loaded slower than dw-hdmi. hdmi->hdcp->hdcp_start is NULL when dw-hdmi call the hdcp_start, cause following system crash: Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = ffffff8009292000 [00000000] *pgd=000000007e1fe003, *pud=000000007e1fe003, *pmd=0000000000000000 Internal error: Oops: 86000005 [#1] SMP Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.70 #418 Hardware name: Rockchip RK3328 EVB (DT) task: ffffffc0003a0000 ti: ffffffc0003a8000 task.ti: ffffffc0003a8000 PC is at 0x0 LR is at dw_hdmi_update_power+0xef4/0x1004 pc : [<0000000000000000>] lr : [<ffffff800849e778>] pstate: 60000045 sp : ffffffc0003ab3b0 x29: ffffffc0003ab3b0 x28: 000000000000410b x27: 0000000000000000 x26: 0000000000000000 x25: ffffffc07770d028 x24: 000000000000410b x23: 0000000000000000 x22: 0000000000000001 x21: 0000000000000002 x20: ffffff8008c02000 x19: ffffff8008c02d90 x18: 0000000062475a46 x17: 0000000000000000 x16: 000000000000000e x15: 0000000000000007 x14: 0ffffffffffffffd x13: 0000000000000018 x12: 0101010101010101 x11: 7f7f7f7f7f7fff7f x10: fefefefeff01f305 x9 : ff7fff7f7f7f7f7f x8 : ffffff80091db5df x7 : 0000000000000000 x6 : 0000000000000004 x5 : 0000000000000015 x4 : 0000000000140b82 x3 : 000000000106b1af x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffffffc076e25e00 Change-Id: I0fccf9d8e06f7acdb56d8e5360acf0df026fee10 Signed-off-by: Zheng Yang <zhengyang@rock-chips.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.