kernel/drivers/input/touchscreen/sur40.c, branch linux-4.1.y

Input: sur40 - validate number of endpoints before using them

2017-05-17T19:07:02Z

[ Upstream commit 92461f5d723037530c1f36cce93640770037812c ] Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer or accessing memory that lie beyond the end of the endpoint array should a malicious device lack the expected endpoints. Fixes: bdb5c57f209c ("Input: add sur40 driver for Samsung SUR40... ") Signed-off-by: Johan Hovold Cc: stable@vger.kernel.org # 3.13 Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin

[media] sur40: fix occasional hard freeze due to buffer queue underrun

2015-04-08T09:28:56Z

This patch fixes a kernel panic which occurs when buf_list is empty. This can happen occasionally when user space is under heavy load (e.g. due to image processing on the CPU) and new buffers aren't re-queued fast enough. In that case, vb2_start_streaming_called can return true, but when the spinlock is taken and sur40_poll attempts to fetch the next buffer from buf_list, the list is in fact empty. This patch needs to be applied on top of the queued one adding V4L2 support to the sur40 driver. Signed-off-by: Florian Echtler Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] add raw video stream support for Samsung SUR40

2015-04-03T00:16:03Z

This patch adds raw video support for the Samsung SUR40 using vbuf2-dma-sg. All tests from v4l2-compliance pass. Support for VB2_USERPTR is currently disabled due to unexpected interference with dma-sg buffer sizes. Signed-off-by: Florian Echtler Signed-off-by: Hans Verkuil [hans.verkuil@cisco.com: fix compile warning: %ld -> %zd] Signed-off-by: Mauro Carvalho Chehab

Input: sur40 - suppress false uninitialized variable warning

2013-12-02T06:17:35Z

We will never use packet_id before initializing it as we start with "need_blobs == -1" and will set packet_id there. Also use le32_to_cpu when fetching header->packet_id. Signed-off-by: Dmitry Torokhov

Input: add sur40 driver for Samsung SUR40 (aka MS Surface 2.0/Pixelsense)

2013-11-20T14:38:44Z

This patch adds support for the built-in multitouch sensor in the Samsung SUR40 touchscreen device, also known as Microsoft Surface 2.0 or Microsoft Pixelsense. Support for raw video output from the sensor as well as the accelerometer will be added in a later patch. Signed-off-by: Florian Echtler Reviewed-by: David Herrmann Reviewed-by: Henrik Rydberg Signed-off-by: Dmitry Torokhov