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After slave abort, all DMA should be stopped, or it will affect the next transmission: [ 31.693877] Unable to handle kernel paging request at virtual address ffffff8105a2a7c0 [ 31.694643] Mem abort info: [ 31.694898] ESR = 0x96000045 [ 31.695179] EC = 0x25: DABT (current EL), IL = 32 bits [ 31.695653] SET = 0, FnV = 0 [ 31.695931] EA = 0, S1PTW = 0 [ 31.696218] Data abort info: [ 31.696485] ISV = 0, ISS = 0x00000045 [ 31.696832] CM = 0, WnR = 1 [ 31.697112] swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000000142f000 [ 31.697713] [ffffff8105a2a7c0] pgd=0000000000000000, p4d=0000000000000000, pud=0000000000000000 [ 31.698502] Internal error: Oops: 96000045 [#1] SMP [ 31.698943] Modules linked in: [ 31.699235] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 5.10.43 #8 [ 31.699895] Hardware name: Rockchip RK3588 EVB1 LP4 V10 Board (DT) [ 31.700455] pstate: 60400089 (nZCv daIf +PAN -UAO -TCO BTYPE=--) [ 31.701000] pc : rockchip_spi_slave_abort+0x150/0x18c [ 31.701456] lr : rockchip_spi_slave_abort+0x78/0x18c Change-Id: I486211d1b96125bae18b6f1a51e1e425da5e847f Signed-off-by: Jon Lin <jon.lin@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.