litmus-rt.git/drivers/mcb, branch master

mcb: request_mem_region() returns NULL on error

2015-04-03T14:15:30+00:00

The code here is checking for IS_ERR() when request_mem_region() only
returns NULL on error and never an ERR_PTR.

Signed-off-by: Dan Carpenter 
Signed-off-by: Greg Kroah-Hartman

mcb: Fix error path of mcb_pci_probe

2015-02-03T23:48:51+00:00

If a MCB PCI Carrier device is IO mapped insted of memory-mapped (which is
currently unsupported by the upstream driver) the probe function bails out
with -ENOTSUPP.

In this case the memory of the PCI device was not unmapped.
Also rename error label to reflect what will happen at the destination (suggested
by Julia Lawall .

Signed-off-by: Johannes Thumshirn 
Reported-by: kbuild test robot 
Signed-off-by: Greg Kroah-Hartman

mcb: mcb-pci: Only remap the 1st 0x200 bytes of BAR 0

2015-01-09T23:46:37+00:00

Currently it is not possible to have a kernel with built-in MCB attached
devices. This results out of the fact that mcb-pci requests PCI BAR 0, then
parses the chameleon table and calls the driver's probe function before
releasing BAR 0 again. When building the kernel with modules this is not a
problem (and therefore it wasn't detected by my tests yet).

A solution is to only remap the 1st 0x200 bytes of a Chameleon PCI device.
0x200 bytes is the maximum size of a Chameleon v2 Table.

Also this patch stops disabling the PCI device on successful registration of MCB
devices.

Signed-off-by: Johannes Thumshirn 
Suggested-by: Bjorn Helgaas 
Reviewed-by: Bjorn Helgaas 
Signed-off-by: Greg Kroah-Hartman

mcb: Add support for shared PCI IRQs

2014-05-28T00:38:11+00:00

Add support for shared PCI IRQs to mcb and mcb-pci.

Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

drivers: mcb: fix memory leak in chameleon_parse_cells() error path

2014-04-16T19:28:47+00:00

chameleon_parse_cells() bails out if chameleon descriptor type is
invalid but does not free the storage 'header' points to.

Signed-off-by: Christoph Jaeger 
Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

drivers: mcb: Fix build error discovered by 0-day bot

2014-03-09T17:22:46+00:00

Make mcb depend on HAS_IOMEM and mcb-pci depend on PCI. This fixes build errors
discovered by the 0-day kernel build testing system.

Signed-off-by: Johannes Thumshirn 
Reported-by: kbuild test robot 
Signed-off-by: Greg Kroah-Hartman

drivers/mcb: do not set default Kconfig variable to modular

2014-03-09T05:55:39+00:00

Coverage builds found this build fail in ARM ebsa110_defconfig:

drivers/mcb/mcb-parse.c: In function 'chameleon_parse_cells':
drivers/mcb/mcb-parse.c:105:2: error: implicit declaration of function 'memcpy_fromio' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make[2]: *** [drivers/mcb/mcb-parse.o] Error 1

A simple bisect will output this:

3764e82e5150d87b205c10cd78a9c9ab86fbfa51 is the first bad commit
commit 3764e82e5150d87b205c10cd78a9c9ab86fbfa51
Author: Johannes Thumshirn 
Date:   Wed Feb 26 17:29:05 2014 +0100

    drivers: Introduce MEN Chameleon Bus

The above commit used "default m" which is wrong.  New drivers
should never be globally enabled with "default y/m".  Whether
this driver makes sense to build on ARM is an independent issue.

Here we delete the "default m" line, which is the equivalent of
"default n".

Cc: Johannes Thumshirn 
Cc: Greg Kroah-Hartman 
Signed-off-by: Paul Gortmaker 
Signed-off-by: Greg Kroah-Hartman

mcb: Add PCI carrier for MEN Chameleon Bus

2014-02-28T23:47:12+00:00

Add support for MCB over PCI devices. Both PCI attached on-board Chameleon FPGAs
as well as CompactPCI based MCB carrier cards are supported with this driver.

Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman

drivers: Introduce MEN Chameleon Bus

2014-02-28T23:36:37+00:00

The MCB (MEN Chameleon Bus) is a Bus specific to MEN Mikroelektronik
FPGA based devices. It is used to identify MCB based IP-Cores within
an FPGA and provide the necessary framework for instantiating drivers
for these devices.

Signed-off-by: Johannes Thumshirn 
Signed-off-by: Greg Kroah-Hartman