linux-toradex.git/drivers/hwtracing/intel_th/sth.c, branch v4.9.14 Linux kernel for Apalis and Colibri modules intel_th: sth: Sanitize packet callback's return values 2016-02-20T22:09:14+00:00 Alexander Shishkin alexander.shishkin@linux.intel.com 2016-02-15T17:11:58+00:00 97007500ec3f9b08913ebec986068b9d250a6eed According to the stm class interface, the packet callback should return an error if it is asked to generate packets that it doesn't support. When it succeeds, it should return number of bytes consumed from its payload. Currently, for FLAG packet it mistakenly returns 1. This patch addresses these issues. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
According to the stm class interface, the packet callback should return
an error if it is asked to generate packets that it doesn't support.
When it succeeds, it should return number of bytes consumed from its
payload. Currently, for FLAG packet it mistakenly returns 1.

This patch addresses these issues.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
intel_th: Check for NULL instead of ERR_PTR 2015-10-17T06:25:48+00:00 Dan Carpenter dan.carpenter@oracle.com 2015-10-16T14:09:13+00:00 73061da07d28ac6724bcd9ce4b51cf51a8b6b40e devm_ioremap() returns NULL on error, it doesn't return an ERR_PTR, which is what the current code does. This patch corrects these checks. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
devm_ioremap() returns NULL on error, it doesn't return an ERR_PTR,
which is what the current code does. This patch corrects these
checks.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
intel_th: Add Software Trace Hub driver 2015-10-04T19:28:58+00:00 Alexander Shishkin alexander.shishkin@linux.intel.com 2015-09-22T12:47:17+00:00 f04e449fc76e7bfd1b8ed11967ab092d05355b6b Software Trace Hub (STH) is a trace source device in the Intel TH architecture, it generates data that then goes through the switch into one or several output ports. STH collects data from software sources using the stm device class abstraction. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
Software Trace Hub (STH) is a trace source device in the Intel TH
architecture, it generates data that then goes through the switch into
one or several output ports.

STH collects data from software sources using the stm device class
abstraction.

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>