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zhichao.liu cf82d0ecb8
spi: mediatek: Fix package division error 
Commit 7e963fb2a3 ("spi: mediatek: add ipm design support
for MT7986") makes a mistake on package dividing operation
(one change is missing), need to fix it.

Background:
Ipm design is expanding the HW capability of dma (adjust package
length from 1KB to 64KB), and using "dev_comp->ipm_support" flag
to indicate it.

Issue description:
Ipm support patch (said above) is missing to handle remainder at
package dividing operation.
One case, a transmission length is 65KB, is will divide to 1K
(package length) * 65(package loop) in non-ipm desgin case, and
will divide to 64K(package length) * 1(package loop) + 1K(remainder)
in ipm design case. And the 1K remainder will be lost with the
current SW flow, and the transmission will be failure.
So, it should be fixed.

Solution:
Add "ipm_design" flag in function "mtk_spi_get_mult_delta()" to
indicate HW capability, and modify the parameters corespondingly.

fixes: 7e963fb2a3 ("spi: mediatek: add ipm design support for MT7986")
Signed-off-by: zhichao.liu <zhichao.liu@mediatek.com>
Link: https://lore.kernel.org/r/20221021091653.18297-1-zhichao.liu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-10-31 13:20:09 +00:00
arch powerpc fixes for 6.0 #4 2022-09-04 11:33:22 -07:00
block
certs
crypto
Documentation spi: migrate mt7621 text bindings to YAML 2022-09-27 12:33:06 +01:00
drivers spi: mediatek: Fix package division error 2022-10-31 13:20:09 +00:00
fs 5 cifs/smb3 fixes, all also for stable 2022-09-02 16:20:24 -07:00
include spi: spi-mem: Fix typo (of -> or) 2022-10-10 13:01:19 +01:00
init
io_uring io_uring-6.0-2022-09-02 2022-09-02 16:37:01 -07:00
ipc
kernel
lib
LICENSES
mm mm: pagewalk: Fix race between unmap and page walker 2022-09-03 10:13:13 -07:00
net
samples
scripts Makefile.extrawarn: re-enable -Wformat for clang; take 2 2022-09-04 11:15:50 -07:00
security Landlock fix for v6.0-rc4 2022-09-02 15:24:08 -07:00
sound
tools s390: 2022-09-04 11:27:14 -07:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
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MAINTAINERS MAINTAINERS: Update HiSilicon SFC Driver maintainer 2022-10-28 12:58:13 +01:00
Makefile Linux 6.0-rc4 2022-09-04 13:10:01 -07:00
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.