A pointer to a probe callback is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Dmitry Baryshkov <dbaryshkov@gmail.com>
Cc: Eric Miao <eric.miao@marvell.com>
Cc: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Cc: Paul Sokolovsky <pmiscml@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Adds ssp functions into header so we don't get
"implicit declaration" error at builtime.
* Converts jornada_ssp_start/end functions into voids with
proper declarations (to avoid "prototype..." warning).
* Sorts include files in alphabetical order
* Minor comment changes
Signed-off-by: Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
These patches add full SSP/MCU support for the HP Jornada 720
machine. Its needed to handle keyboard, touchscreen, battery
and backlight/lcd.
The main driver exports functions and the header file exports
the command values. When talking to the MCU the general procedure
is to start MCU, send command (using ssp_inout(command)), the
proper reply is always TXDUMMY. After receiving TXDUMMY you can
send the value you wish pushed (for example brightness level).
End with ssp_end() so the spinlock gets unlocked.
Drivers using this havent been implemented yet, but will shortly.
Signed-off-by: Kristoffer Ericson <Kristoffer.ericson@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Uwe Kleine-König
Jean Delvare
Kristoffer Ericson
Russell King
Kristoffer Ericson