6c3ce4049b
Use clk_prepare_enable()/clk_disable_unprepare() in preparation for switch to Common Clock Framework, otherwise the following is visible: WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:1011 clk_core_enable+0x9c/0xbc Enabling unprepared ep93xx-adc CPU: 0 PID: 1 Comm: swapper Not tainted 5.13.0-rc5-... #1 Hardware name: Cirrus Logic EDB9302 Evaluation Board [<c000d5b0>] (unwind_backtrace) from [<c000c590>] (show_stack+0x10/0x18) [<c000c590>] (show_stack) from [<c03a5f38>] (dump_stack+0x20/0x2c) [<c03a5f38>] (dump_stack) from [<c03a2098>] (__warn+0x98/0xc0) [<c03a2098>] (__warn) from [<c03a2150>] (warn_slowpath_fmt+0x90/0xc0) [<c03a2150>] (warn_slowpath_fmt) from [<c01d8358>] (clk_core_enable+0x9c/0xbc) [<c01d8358>] (clk_core_enable) from [<c01d8698>] (clk_core_enable_lock+0x18/0x30) [<c01d8698>] (clk_core_enable_lock) from [<c0266560>] (ep93xx_adc_probe+0xe4/0x1a0) [<c0266560>] (ep93xx_adc_probe) from [<c02126e0>] (platform_probe+0x34/0x80) [<c02126e0>] (platform_probe) from [<c0210bf8>] (really_probe+0xe8/0x394) [<c0210bf8>] (really_probe) from [<c0211464>] (device_driver_attach+0x5c/0x64) [<c0211464>] (device_driver_attach) from [<c02114e8>] (__driver_attach+0x7c/0xec) [<c02114e8>] (__driver_attach) from [<c020f1b4>] (bus_for_each_dev+0x78/0xc4) [<c020f1b4>] (bus_for_each_dev) from [<c0211570>] (driver_attach+0x18/0x24) [<c0211570>] (driver_attach) from [<c020fab4>] (bus_add_driver+0x140/0x1cc) [<c020fab4>] (bus_add_driver) from [<c0211c44>] (driver_register+0x74/0x114) [<c0211c44>] (driver_register) from [<c02134f8>] (__platform_driver_register+0x18/0x24) [<c02134f8>] (__platform_driver_register) from [<c0470148>] (ep93xx_adc_driver_init+0x10/0x1c) [<c0470148>] (ep93xx_adc_driver_init) from [<c045ce88>] (do_one_initcall+0x7c/0x1a4) [<c045ce88>] (do_one_initcall) from [<c045d184>] (kernel_init_freeable+0x17c/0x1fc) [<c045d184>] (kernel_init_freeable) from [<c03a64d0>] (kernel_init+0x8/0xf8) [<c03a64d0>] (kernel_init) from [<c00082d8>] (ret_from_fork+0x14/0x3c) ... ep93xx-adc ep93xx-adc: Cannot enable clock ep93xx-adc: probe of ep93xx-adc failed with error -108 Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com> Link: https://lore.kernel.org/r/20210613233041.128961-2-alexander.sverdlin@gmail.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> |
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|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| 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.