Fork of alistair23 Linux kernel for reMarkable from https://github.com/alistair23/linux
3d64db930d
In 5.x, the first parameter of dma_alloc_coherent() can't be 0, otherwise the following dump will arise when run the command: `/unit_tests/Display/pxp_test.out -I "-o 1.yuv" '. This patch fixed this. And also, use register_chrdev instead of misc_register to make it clean. [ 53.838653] Internal error: Oops: 17 [#1] SMP ARM [ 53.844538] Modules linked in: [ 53.847610] CPU: 0 PID: 754 Comm: pxp_test.out Not tainted 5.4.0-rc5-03564-g9792b86 #46 [ 53.855620] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 53.861473] PC is at dma_alloc_attrs+0x10/0x114 [ 53.866015] LR is at pxp_device_ioctl+0x90c/0xe98 [ 53.870728] pc : [<c01bf1e8>] lr : [<c05eb360>] psr: a0070013 [ 53.877001] sp : ed4e7e74 ip : 00000001 fp : b6591f9c [ 53.882232] r10: 00000000 r9 : e47efd40 r8 : ed4e7ecc [ 53.887463] r7 : ed508cc0 r6 : c1408b08 r5 : 00000000 r4 : 00000051 [ 53.893997] r3 : 00000cc1 r2 : e47efd4c r1 : 00055000 r0 : 00000240 [ 53.900533] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [ 53.907675] Control: 10c5387d Table: ad14804a DAC: 00000051 [ 53.913428] Process pxp_test.out (pid: 754, stack limit = 0x(ptrval)) [ 53.919878] Stack: (0xed4e7e74 to 0xed4e8000) [ 53.924245] 7e60: 00000051 b6591cf4 c1408b08 [ 53.932434] 7e80: ed508cc0 ed4e7ecc e47efd40 00000000 b6591f9c c05eb360 00000000 c0605e08 [ 53.940622] 7ea0: ed42ac00 c0607e3c 00000034 e47fe3c0 ed4e6000 00000034 c1408b08 c0605cc0 [ 53.948810] 7ec0: ed4e7f78 00000000 ed4e6000 00000000 00054600 00000000 00000000 00000000 [ 53.956998] 7ee0: c1408b08 0479b828 00000000 c1408b08 b6591cf4 e47fb640 c02b7b8c b6591cf4 [ 53.965187] 7f00: ed4e6000 eca65e00 b6591f9c c02b71e0 c02c4bbc c0192be8 ec2dc380 c018dc54 [ 53.973374] 7f20: c1408b08 00000001 00000000 0479b828 c15344fd 00000004 00004000 e47fb3c0 [ 53.981562] 7f40: c15344fd c112a1d4 c110a05c c02c4bcc 00000000 00000000 c02c4aa8 00000000 [ 53.989750] 7f60: e47fab41 0479b828 bee8aad0 e47fb641 e47fb640 00000004 c0145004 b6591cf4 [ 53.997938] 7f80: ed4e6000 00000036 b6591f9c c02b7b8c b6591cf4 bee8aad0 b6591ce8 00000036 [ 54.006125] 7fa0: c01011c4 c0101000 b6591cf4 bee8aad0 00000004 c0145004 b6591cf4 b6ee603c [ 54.014313] 7fc0: b6591cf4 bee8aad0 b6591ce8 00000036 00077858 00000000 bee8aad0 b6591f9c [ 54.022502] 7fe0: b6ee6018 b6591cac b6ed5848 b6e604bc 60070010 00000004 00000000 00000000 [ 54.030699] [<c01bf1e8>] (dma_alloc_attrs) from [<00000034>] (0x34) [ 54.036981] Code: e92d4ff0 e1a05000 e2800d09 e59f60ec (e140a0d8) [ 54.043222] ---[ end trace d872f4c07e2464bf ]--- Signed-off-by: Robby Cai <robby.cai@nxp.com> |
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| fs | ||
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| kernel | ||
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| security | ||
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| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
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| COPYING | ||
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| Kbuild | ||
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| MAINTAINERS | ||
| Makefile | ||
| README | ||
README
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.
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.