From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
To: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: barebox@lists.infradead.org
Subject: [PATCH 0/4] Introduce deferred probing
Date: Fri, 10 Apr 2015 03:02:42 +0200 [thread overview]
Message-ID: <1428627766-17178-1-git-send-email-sebastian.hesselbarth@gmail.com> (raw)
As expected, the Lenovo ix4 has an poor-man's GPIO expander (74x163)
connected by (guess what) GPIO bitbang SPI. This causes driver probing
to fail when the GPIO expander is probed before GPIO SPI driver.
This patch set introduces deferred probing support into base/driver.c
by moving drivers that request probe deferral to an extra device list
that will be reprobed later. As -EPROBE_DEFER is an error in general,
the rest of the patch set amends gpio and led parts to deal with this
special case.
The corresponding drivers and support for Lenovo ix4 will be added in
a third patch set.
Sebastian Hesselbarth (4):
base: Introduce deferred probing
gpio: Return -EPROBE_DEFER on gpio_get_num()
OF: gpio: Silence error message on -EPROBE_DEFER
led: gpio: Properly deal with deferred probing
drivers/base/driver.c | 42 +++++++++++++++++++++++++++++++++++++++---
drivers/gpio/gpiolib.c | 5 ++++-
drivers/led/led-gpio.c | 15 ++++++++++++++-
drivers/of/of_gpio.c | 5 +++--
include/asm-generic/errno.h | 1 +
5 files changed, 61 insertions(+), 7 deletions(-)
---
Cc: barebox@lists.infradead.org
--
2.1.0
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next reply other threads:[~2015-04-10 1:03 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-10 1:02 Sebastian Hesselbarth [this message]
2015-04-10 1:02 ` [PATCH 1/4] base: " Sebastian Hesselbarth
2015-04-13 6:54 ` Sascha Hauer
2015-04-13 14:26 ` Sebastian Hesselbarth
2015-04-10 1:02 ` [PATCH 2/4] gpio: Return -EPROBE_DEFER on gpio_get_num() Sebastian Hesselbarth
2015-04-10 1:02 ` [PATCH 3/4] OF: gpio: Silence error message on -EPROBE_DEFER Sebastian Hesselbarth
2015-04-10 1:02 ` [PATCH 4/4] led: gpio: Properly deal with deferred probing Sebastian Hesselbarth
2015-04-13 8:14 ` [PATCH 0/4] Introduce " Sascha Hauer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1428627766-17178-1-git-send-email-sebastian.hesselbarth@gmail.com \
--to=sebastian.hesselbarth@gmail.com \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox