linux-dev - Linux kernel development work

Age	Commit message (Collapse)	Author	Files	Lines
2018-06-06	mailbox: bcm2835: Fix of_xlate return value	Stefan Wahren	1	-1/+1
	The bcm2835-mailbox returns NULL instead of an error pointer, which could result in a NULL ptr dereference in mbox_request_channel. So fix this by returning a proper error pointer. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Fixes: 0bae6af6d704 ("mailbox: Enable BCM2835 mailbox support") Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2015-08-05	mailbox: Drop owner assignment from platform_driver	Krzysztof Kozlowski	1	-1/+0
	platform_driver does not need to set an owner because platform_driver_register() will set it. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Lee Jones <lee@kernel.org> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2015-06-13	mailbox/bcm2835: Fix mailbox full detection.	Eric Anholt	1	-1/+2
	With the VC reader blocked and the ARM writing, MAIL0_STA reads empty permanently while MAIL1_STA goes from empty (0x40000000) to non-empty (0x00000001-0x00000007) to full (0x80000008). This bug ended up having no effect on us, because all of our transactions in the client driver were synchronous and under a mutex. Suggested-by: Phil Elwell <phil@raspberrypi.org> Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
2015-06-11	mailbox: Enable BCM2835 mailbox support	Lubomir Rintel	1	-0/+216
	This mailbox driver provides a single mailbox channel to write 32-bit values to the VPU and get a 32-bit response. The Raspberry Pi firmware uses this mailbox channel to implement firmware calls, while Roku 2 (despite being derived from the same firmware tree) doesn't. The driver was originally submitted by Lubomir, based on the out-of-tree 2708 mailbox driver. Eric Anholt fixed it up for upstreaming, with the major functional change being that it now has no notion of multiple channels (since that is a firmware-dependent concept) and instead the raspberrypi-firmware driver will do that bit-twiddling in its own messages. [Jassi: made the 'mbox_chan_ops' struct as const and removed a redundant variable] Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Craig McGeachie <slapdau@yahoo.com.au> Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>