ddd9320a5a
commit4114b17af4upstream. We are currently using nand_soft_waitrdy to poll the status of the NAND flash. FMC2 enables the wait feature bit (this feature is mandatory for the sequencer mode). By enabling this feature, we can't poll the status of the NAND flash, the read status command is stucked in FMC2 pipeline until R/B# signal is high, and locks the CPU bus. To avoid to lock the CPU bus, we poll FMC2 ISR register. This register reports the status of the R/B# signal. Fixes:2cd457f328("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver") Signed-off-by: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.