Yocto build is ignoring changes in recipe

[visparon]

I'm modifying a current recipe that builds onto a Wandboard device using yocto.

I'm having trouble making the bitbake compile my changes using my patch and i want to know if i'm doing something wrong.

First i updated linux-wandboard_3.14.28.bb to add my patch like this: SRC_URI += "\

https://www.kernel.org/pub/linux/kernel/projects/rt/3.14/older/patch-3.14.28-rt25.patch.gz;name=rt-p... \

file://0001-fix-build.patch \

file://0002-fix-build-with-rt-enabled.patch \

file://0003-no-split-ptlocks.patch \

file://0004-imx-sdma-channel-use-raw-spinlock.patch \

file://0005-changes.patch \

"

Where my patch is called 0005-changes.patch.

Then i added my .patch files in the linux-wandboard_3.14.28 folder, where i am sure is reading the patch.

In my patch i'm modifying 3 files:

arch/arm/boot/dts/imx6qdl-wandboard.dtsi | 39 +++-

drivers/video/mxc/mipi_dsi.c | 2 +-

drivers/video/mxc/mxcfb_hx8369_wvga.c | 358 ++++++++++++++++++-------------

When i run the command: "bitbake core-image-sato" yocto is detecting the changes on the linux-wandboard_3.14.28.bb but my patches are not getting applied since i added a syntax mistake on purpose to see if the compiler is really compiling my files but with no success, yocto compiles everything correctly:

NOTE: Tasks Summary: Attempted 5509 tasks of which 5509 didn't need to be rerun and all succeeded.

With this i know that my patches are not getting updated and are not compiling, what i am doing wrong?.

Thank you in advance.

Edit 1: I tried to do my own recipe and i'm getting the same results, my patch is not getting applied since it has syntax mistakes on purpose.

[visparon]

Found the problem, at the end i need to clean my recipe first using:
bitbake -c cleansstate linux-wandboard.

Then i can compile the recipe:

bitbake linux-wandboard.

[igorpadykov]

Hi Hector

for making changes one can look at yocto documentation

i.MX Yocto Project: How can I (quickly) modify the kernel and test it? 

http://www.embeddedlinux.org.cn/OEManual/usage_workwithsinglerecipe.html 

Best regards
igor

[marcomadrigal]

Hi,

Is your patch at least listed into the tmp directory where the kernel is built? 

Best Regards,

-Marco

https://www.ridgerun.com