[PATCH] SPI: bcm2835: move to the transfer_one driver model
kernel at martin.sperl.org
Sun Mar 29 14:44:07 PDT 2015
> all obviously an option but time consuming and an effort...
> Let us see if I find some time to test...
I started with the foundation kernels (as I know I was working
with those at the time):
3.8.13 - d996a1b91b2bf3dc06f4f4f822a56f4496457aa1 - WORKS
3.9.11 - d5572370289f698b101f3d0198b1c99f17f0d278 - WORKS
3.10.38 - 1b49b450222df26e4abf7abb6d9302f72b2ed386 - FAIL
3.12.36 - ee9b8c7d46f2b1787b1e64604acafc70f70191cf - FAIL
I will now try the same with the mainline kernel comparing 3.9
and 3.10 and maybe I can come up with something...
(unfortunately this is still quite time-consuming -
Note that some comments in commit messages of rpi-linux talk
about some backport of code from 3.13, so this may be the real
Here the commit inside the foundation kernel that I refer to:
Author: ghollingworth <gordon at raspberrypi.org>
Date: Fri Mar 21 12:14:41 2014 +0000
Support eMMC 5.1 cards
Already upstream and in 3.13
From the diff of drivers/mmc it also looks as if there is more
error-handling code in the generic mmc code which may trigger
One other issue with the upstream kernel is that for 3.9 there is
no spi-bcm2835 driver, so testing against does not work - it only
got included with 3.10, so testing is futile...
I will try to see if the commit 0385850e67359838f7d63 which is
right before cff74f34502d46a6160db is working or not and then
check if that commit introduced the issue.
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