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Message-ID: <202209190442.fzEZYZP8-lkp@intel.com>
Date: Mon, 19 Sep 2022 04:25:11 +0800
From: kernel test robot <lkp@...el.com>
To: "Maciej W. Rozycki" <macro@...am.me.uk>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sasha Levin <sashal@...nel.org>, linux-doc@...r.kernel.org
Subject: [linux-stable-rc:linux-5.15.y 9206/9999] htmldocs:
Documentation/tty/device_drivers/oxsemi-tornado.rst:41: WARNING: Inline
interpreted text or phrase reference start-string without end-string.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
head: d766f744e4827dc41ef6c01403a96b7bb3938132
commit: 6f47a7594bcf22409bb3eb052f05e766d315713e [9206/9999] serial: 8250: Add proper clock handling for OxSemi PCIe devices
reproduce:
# https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=6f47a7594bcf22409bb3eb052f05e766d315713e
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc linux-5.15.y
git checkout 6f47a7594bcf22409bb3eb052f05e766d315713e
make menuconfig
# enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS
make htmldocs
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> Documentation/tty/device_drivers/oxsemi-tornado.rst:41: WARNING: Inline interpreted text or phrase reference start-string without end-string.
>> Documentation/tty/device_drivers/oxsemi-tornado.rst:96: WARNING: Block quote ends without a blank line; unexpected unindent.
>> Documentation/tty/device_drivers/oxsemi-tornado.rst: WARNING: document isn't included in any toctree
vim +41 Documentation/tty/device_drivers/oxsemi-tornado.rst
40
> 41 Here are the figures for the standard and some non-standard baud rates
42 (including those quoted in Oxford Semiconductor documentation), giving
43 the requested rate (r), the actual rate yielded (a) and its deviation
44 from the requested rate (d), and the values of the oversampling rate
45 (tcr), the clock prescaler (cpr) and the divisor (div) produced by the
46 new `get_divisor' handler:
47
48 r: 15625000, a: 15625000.00, d: 0.0000%, tcr: 4, cpr: 1.000, div: 1
49 r: 12500000, a: 12500000.00, d: 0.0000%, tcr: 5, cpr: 1.000, div: 1
50 r: 10416666, a: 10416666.67, d: 0.0000%, tcr: 6, cpr: 1.000, div: 1
51 r: 8928571, a: 8928571.43, d: 0.0000%, tcr: 7, cpr: 1.000, div: 1
52 r: 7812500, a: 7812500.00, d: 0.0000%, tcr: 8, cpr: 1.000, div: 1
53 r: 4000000, a: 4000000.00, d: 0.0000%, tcr: 5, cpr: 3.125, div: 1
54 r: 3686400, a: 3676470.59, d: -0.2694%, tcr: 8, cpr: 2.125, div: 1
55 r: 3500000, a: 3496503.50, d: -0.0999%, tcr: 13, cpr: 1.375, div: 1
56 r: 3000000, a: 2976190.48, d: -0.7937%, tcr: 14, cpr: 1.500, div: 1
57 r: 2500000, a: 2500000.00, d: 0.0000%, tcr: 10, cpr: 2.500, div: 1
58 r: 2000000, a: 2000000.00, d: 0.0000%, tcr: 10, cpr: 3.125, div: 1
59 r: 1843200, a: 1838235.29, d: -0.2694%, tcr: 16, cpr: 2.125, div: 1
60 r: 1500000, a: 1492537.31, d: -0.4975%, tcr: 5, cpr: 8.375, div: 1
61 r: 1152000, a: 1152073.73, d: 0.0064%, tcr: 14, cpr: 3.875, div: 1
62 r: 921600, a: 919117.65, d: -0.2694%, tcr: 16, cpr: 2.125, div: 2
63 r: 576000, a: 576036.87, d: 0.0064%, tcr: 14, cpr: 3.875, div: 2
64 r: 460800, a: 460829.49, d: 0.0064%, tcr: 7, cpr: 3.875, div: 5
65 r: 230400, a: 230414.75, d: 0.0064%, tcr: 14, cpr: 3.875, div: 5
66 r: 115200, a: 115207.37, d: 0.0064%, tcr: 14, cpr: 1.250, div: 31
67 r: 57600, a: 57603.69, d: 0.0064%, tcr: 8, cpr: 3.875, div: 35
68 r: 38400, a: 38402.46, d: 0.0064%, tcr: 14, cpr: 3.875, div: 30
69 r: 19200, a: 19201.23, d: 0.0064%, tcr: 8, cpr: 3.875, div: 105
70 r: 9600, a: 9600.06, d: 0.0006%, tcr: 9, cpr: 1.125, div: 643
71 r: 4800, a: 4799.98, d: -0.0004%, tcr: 7, cpr: 2.875, div: 647
72 r: 2400, a: 2400.02, d: 0.0008%, tcr: 9, cpr: 2.250, div: 1286
73 r: 1200, a: 1200.00, d: 0.0000%, tcr: 14, cpr: 2.875, div: 1294
74 r: 300, a: 300.00, d: 0.0000%, tcr: 11, cpr: 2.625, div: 7215
75 r: 200, a: 200.00, d: 0.0000%, tcr: 16, cpr: 1.250, div: 15625
76 r: 150, a: 150.00, d: 0.0000%, tcr: 13, cpr: 2.250, div: 14245
77 r: 134, a: 134.00, d: 0.0000%, tcr: 11, cpr: 2.625, div: 16153
78 r: 110, a: 110.00, d: 0.0000%, tcr: 12, cpr: 1.000, div: 47348
79 r: 75, a: 75.00, d: 0.0000%, tcr: 4, cpr: 5.875, div: 35461
80 r: 50, a: 50.00, d: 0.0000%, tcr: 16, cpr: 1.250, div: 62500
81 r: 25, a: 25.00, d: 0.0000%, tcr: 16, cpr: 2.500, div: 62500
82 r: 4, a: 4.00, d: 0.0000%, tcr: 16, cpr: 20.000, div: 48828
83 r: 2, a: 2.00, d: 0.0000%, tcr: 16, cpr: 40.000, div: 48828
84 r: 1, a: 1.00, d: 0.0000%, tcr: 16, cpr: 63.875, div: 61154
85
86 With the baud base set to 15625000 and the unsigned 16-bit UART_DIV_MAX
87 limitation imposed by `serial8250_get_baud_rate' standard baud rates
88 below 300bps become unavailable in the regular way, e.g. the rate of
89 200bps requires the baud base to be divided by 78125 and that is beyond
90 the unsigned 16-bit range. The historic spd_cust feature can still be
91 used by encoding the values for, the prescaler, the oversampling rate
92 and the clock divisor (DLM/DLL) as follows to obtain such rates if so
93 required:
94
95 31 29 28 20 19 16 15 0
> 96 +-----+-----------------+-------+-------------------------------+
97 |0 0 0| CPR2:CPR | TCR | DLM:DLL |
98 +-----+-----------------+-------+-------------------------------+
99
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