[bootlin/training-materials updates] master: Kernel labs: use kernel version 5.10.27 (af33b849)

[Michael Opdenacker]

Repository : https://github.com/bootlin/training-materials
On branch  : master
Link       : https://github.com/bootlin/training-materials/commit/af33b84933867a6fdb5241080091fca3419810ac

>---------------------------------------------------------------

commit af33b84933867a6fdb5241080091fca3419810ac
Author: Michael Opdenacker <michael.opdenacker at bootlin.com>
Date:   Mon May 31 10:41:09 2021 +0200

    Kernel labs: use kernel version 5.10.27
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at bootlin.com>


>---------------------------------------------------------------

af33b84933867a6fdb5241080091fca3419810ac
 labs/kernel-i2c-device-model/kernel-i2c-device-model.tex |  7 +++----
 labs/kernel-module-simple/kernel-module-simple.tex       |  4 ++--
 labs/kernel-serial-iomem/kernel-serial-iomem.tex         |  2 +-
 .../kernel-sources-exploring.tex                         | 16 ++++++++++++----
 4 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/labs/kernel-i2c-device-model/kernel-i2c-device-model.tex b/labs/kernel-i2c-device-model/kernel-i2c-device-model.tex
index cb5ea2bb..c2ed8484 100644
--- a/labs/kernel-i2c-device-model/kernel-i2c-device-model.tex
+++ b/labs/kernel-i2c-device-model/kernel-i2c-device-model.tex
@@ -17,11 +17,10 @@ device/driver match.
 \section{Setup}
 
 Go to the \code{~/linux-kernel-labs/src/linux} directory. Check out the
-\code{5.11.y} branch.
+\code{5.10.bootlin} branch.
 
-Now create a new \code{nunchuk} branch starting from the
-\code{5.11.y} branch,  for your upcoming work on the Nunchuk
-driver.
+Now create a new \code{nunchuk} branch starting from this branch,
+for your upcoming work on the Nunchuk driver.
 
 During this lab, we will start to implement a driver for a
 Nunchuk I2C device, but at this stage we won't need to connect
diff --git a/labs/kernel-module-simple/kernel-module-simple.tex b/labs/kernel-module-simple/kernel-module-simple.tex
index 16c0efb9..f2830fb0 100644
--- a/labs/kernel-module-simple/kernel-module-simple.tex
+++ b/labs/kernel-module-simple/kernel-module-simple.tex
@@ -104,7 +104,7 @@ As we are going to make changes to the kernel sources, first create a
 special branch for such changes:
 
 \begin{verbatim}
-git checkout 5.11.y
+git checkout 5.10.bootlin
 git checkout -b hello
 \end{verbatim}
 
@@ -149,7 +149,7 @@ from the commits between your branch and another branch, usually the
 one you started from:
 
 \begin{verbatim}
-git format-patch 5.11.y
+git format-patch 5.10.bootlin
 \end{verbatim}
 
 Have a look at the generated file. You can see that its name reused
diff --git a/labs/kernel-serial-iomem/kernel-serial-iomem.tex b/labs/kernel-serial-iomem/kernel-serial-iomem.tex
index 158dc8be..291810bd 100644
--- a/labs/kernel-serial-iomem/kernel-serial-iomem.tex
+++ b/labs/kernel-serial-iomem/kernel-serial-iomem.tex
@@ -22,7 +22,7 @@ is independent from the nunchuk changes, it's best to create a separate
 branch!
 
 \begin{verbatim}
-git checkout 5.11.y
+git checkout 5.10.bootlin
 git checkout -b uart
 \end{verbatim}
 
diff --git a/labs/kernel-sources-exploring/kernel-sources-exploring.tex b/labs/kernel-sources-exploring/kernel-sources-exploring.tex
index dbfcd003..f491fec9 100644
--- a/labs/kernel-sources-exploring/kernel-sources-exploring.tex
+++ b/labs/kernel-sources-exploring/kernel-sources-exploring.tex
@@ -26,18 +26,26 @@ cd ~/linux-kernel-labs/src/linux
 git branch -a
 \end{verbatim}
 
-As we will do our labs with the Linux 5.11 stable branch, the remote branch
-we are interested in is \code{remotes/stable/linux-5.11.y}.
+As we will do our labs with the Linux 5.10 stable branch, the remote branch
+we are interested in is \code{remotes/stable/linux-5.10.y}.
 
 First, open the \code{Makefile} file just to check the Linux kernel
 version that you currently have.
 
 Now, let's create a local branch starting from that remote branch:
 \begin{verbatim}
-git checkout -b 5.11.y stable/linux-5.11.y
+git checkout -b 5.10.y stable/linux-5.10.y
 \end{verbatim}
 
-Open \code{Makefile} again and make sure you now have a 5.11.y version.
+Open \code{Makefile} again and make sure you now have a 5.10.y version.
+
+Actually, there is currently a regression in the mainline stable kernel,
+impacting our use of the USB gadget driver we use for networking with
+the host. As a consequence, we will create a branch starting from a particular
+stable release tag before this regression:
+\begin{verbatim}
+git checkout -b 5.10.bootlin v5.10.27
+\end{verbatim}
 
 \section{Exploring the sources manually}