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At least on some platforms (tested on ctg) the way vgacon does screen blanking seems to flag constant FIFO underruns, which means we have to be prepared for them while the driver is loading. Currently there is a time window between drm_crtc_init() and intel_sanitize_fifo_underrun_reporting() during which FIFO underrun reporting is in fact marked as enabled. Thus we may end up mistakenly detecting these bogus underruns during driver init. Close the race by marking FIFO underrun reporting as disabled prior to even registering the crtc. intel_sanitize_fifo_underrun_reporting()/etc. will re-enable it later if needed. Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230125185234.21599-2-ville.syrjala@linux.intel.com Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.