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7e44041136
Buffer writes do not work with AMD chip 0x2201. The chip in question is a AMD/Spansion/Cypress Semiconductor S29GL256N and datasheet [1] talks about writing buffers being possible. While waiting for a neater solution resort to writing word-sized chunks only. Without the patch kernel logs will be flooded with entries like below: jffs2_scan_eraseblock(): End of filesystem marker found at 0x0 jffs2_build_filesystem(): unlocking the mtd device... done. jffs2_build_filesystem(): erasing all blocks after the end marker... MTD do_write_buffer_wait(): software timeout, address:0x01ec000a. jffs2: Write clean marker to block at 0x01920000 failed: -5 MTD do_write_buffer_wait(): software timeout, address:0x01e2000a. jffs2: Write clean marker to block at 0x01880000 failed: -5 MTD do_write_buffer_wait(): software timeout, address:0x01e0000a. jffs2: Write clean marker to block at 0x01860000 failed: -5 MTD do_write_buffer_wait(): software timeout, address:0x01dc000a. jffs2: Write clean marker to block at 0x01820000 failed: -5 MTD do_write_buffer_wait(): software timeout, address:0x01da000a. jffs2: Write clean marker to block at 0x01800000 failed: -5 ... Tested on a Buffalo wzr-hp-g300nh running kernel 5.10.16. [1] https://www.cypress.com/file/219941/download or https://datasheetspdf.com/pdf-file/565708/SPANSION/S29GL256N/1 Signed-off-by: Mauri Sandberg <sandberg@mailfence.com> Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> Link: https://lore.kernel.org/r/20210309174859.362060-1-sandberg@mailfence.com |
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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.