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2013-09-27Intel MIC Host Driver, card OS state management.Sudeep Dutt9-4/+1365
This patch enables the following features: a) Boots and shuts down the card via sysfs entries. b) Allocates and maps a device page for communication with the card driver and updates the device page address via scratchpad registers. c) Provides sysfs entries for shutdown status, kernel command line, ramdisk and log buffer information. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27Intel MIC Host Driver Interrupt/SMPT support.Dasaratharaman Chandramouli9-2/+1638
This patch enables the following features: a) MSIx, MSI and legacy interrupt support. b) System Memory Page Table(SMPT) support. SMPT enables system memory access from the card. On X100 devices the host can program 32 SMPT registers each capable of accessing 16GB of system memory address space from X100 devices. The registers can thereby be used to access a cumulative 512GB of system memory address space from X100 devices at any point in time. Co-author: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27Intel MIC Host Driver for X100 family.Sudeep Dutt11-0/+708
This patch enables the following: a) Initializes the Intel MIC X100 PCIe devices. b) Provides sysfs entries for family and stepping information. Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27VMCI: fix to pass correct device identity to free_irq()Wei Yongjun1-1/+1
free_irq() expects the same device identity that was passed to corresponding request_irq(), otherwise the IRQ is not freed. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Dmitry Torokhov <dtor@vmware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27ARM: sunxi: Initial support for Allwinner's Security ID fusesOliver Schinagl3-0/+172
Allwinner has electric fuses (efuse) on their line of chips. This driver reads those fuses, seeds the kernel entropy and exports them as a sysfs node. These fuses are most likely to be programmed at the factory, encoding things like Chip ID, some sort of serial number, etc. and appear to be reasonably unique. While in theory, these should be writeable by the user, it will probably be inconvenient to do so. Allwinner recommends that a certain input pin, labeled 'efuse_vddq', be connected to GND. To write these fuses however, a 2.5 V programming voltage needs to be applied to this pin. Even so, they can still be used to generate a board-unique mac from, board unique RSA key and seed the kernel RNG. On sun7i additional storage is available, this is initially used for an UEFI BOOT key, Secure JTAG key, HDMI-HDCP key and vendor specific keys. Currently supported are the following known chips: Allwinner sun4i (A10) Allwinner sun5i (A10s, A13) Allwinner sun7i (A20) Signed-off-by: Oliver Schinagl <oliver@schinagl.nl> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26extcon: arizona: Fix up minor coding style to remove unnecessary bracesChanwoo Choi1-6/+4
This fixes up braces coding style issue by using checkpatch script. Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26extcon: class: Remove unnecessary extern declarationChanwoo Choi1-1/+0
This patch remove unnecessary extern declaration (extcon_set_state). checkpatch found this coding style issue. Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26extcon: Fix up 80 column coding style issuesChanwoo Choi4-72/+94
This patch fix 80 column coding sytle issues by using checkpatch script. Cc: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26misc: pti: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26misc: mei: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26misc: ibmasm: remove unnecessary pci_set_drvdata()Jingoo Han1-2/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26misc: tifm: remove unnecessary pci_set_drvdata()Jingoo Han1-3/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: misc: ti_dac7512: add support for DT matchingDaniel Mack1-0/+10
Only matching is done via DT, no other details can be passed. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: misc: ti_dac7512: provide a SPI ID tableDaniel Mack1-0/+7
This way, the module can be autoloaded by the SPI core. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: misc: ti_dac7512: drop DAC7512_DRV_NAMEDaniel Mack1-3/+1
The driver's name can be provided directly, so drop the #define. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: misc: ti_dac7512: drop module versionDaniel Mack1-2/+0
Providing a module version doesn't add any value, so drop it. Signed-off-by: Daniel Mack <zonque@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move ringbuffer bus attributes to dev_groupsGreg Kroah-Hartman1-84/+146
This moves the ringbuffer bus attributes to the dev_groups structure, deletes the now unneeded struct hv_device_info, and removes some now unused functions, and variables as everything is now moved to the dev_groups structure, dev_attrs is no longer needed. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: delete struct hv_dev_port_infoGreg Kroah-Hartman2-25/+17
It's no longer needed, and the struct hv_ring_buffer_debug_info structure shouldn't be "global" so move it to the local .h file instead. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: delete vmbus_get_debug_info()Greg Kroah-Hartman2-29/+16
It's only used once, only contains 2 function calls, so just make those calls directly, deleting the function, and the now unneeded structure entirely. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "client/server_monitor_conn_id" bus attributes to dev_groupsGreg Kroah-Hartman2-31/+38
This moves the "client_monitor_conn_id" and "server_monitor_conn_id" bus attributes to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "client/server_monitor_latency" bus attributes to dev_groupsGreg Kroah-Hartman2-14/+38
This moves the "client_monitor_latency" and "server_monitor_latency" bus attributes to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "client/server_monitor_pending" bus attributes to dev_groupsGreg Kroah-Hartman2-14/+46
This moves the "client_monitor_pending" and "server_monitor_pending" bus attributes to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: make "monitor_pages" a "real" pointer arrayGreg Kroah-Hartman3-18/+15
monitor_pages was a void pointer, containing an unknown number of arrays that we just "knew" were a child and parent array of a specific size. Instead of that implicit knowledge, let's make them a real pointer, allowing us to have type safety, and a semblance of sane addressing schemes. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "device_id" bus attribute to dev_groupsGreg Kroah-Hartman2-14/+14
This moves the "device_id" bus attribute to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "class_id" bus attribute to dev_groupsGreg Kroah-Hartman2-9/+15
This moves the "class_id" bus attribute to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "modalias" bus attribute to dev_groupsGreg Kroah-Hartman1-5/+12
This moves the "state" bus attribute to the dev_groups structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "monitor_id" bus attribute to dev_groupsGreg Kroah-Hartman2-8/+12
This moves the "state" bus attribute to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: move "state" bus attribute to dev_groupsGreg Kroah-Hartman2-6/+12
This moves the "state" bus attribute to the dev_groups structure, removing the need for it to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: use dev_groups for device attributesGreg Kroah-Hartman2-6/+18
This patch is the first in a series that moves the hv bus code to use the dev_groups field instead of dev_attrs, as dev_attrs is going away in future kernel releases. It moves the id sysfs file to the dev_groups structure, and creates the needed show/store functions, instead of relying on one "universal" function for this. By doing this, it removes the need for this to be in a temporary structure. Tested-by: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers/pcmcia/yenta_socket.c: convert to module_pci_driverLibo Chen1-15/+1
Use module_pci_driver instead of init/exit, make code clean. Signed-off-by: Libo Chen <libo.chen@huawei.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers/pcmcia/pd6729.c: convert to module_pci_driverLibo Chen1-12/+1
Use module_pci_driver instead of init/exit, make code clean. Signed-off-by: Libo Chen <libo.chen@huawei.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hv: Change variable type to boolPeter Senna Tschudin1-1/+1
The variable execute_shutdown is only assigned the values true and false. Change its type to bool. The simplified semantic patch that find this problem is as follows (http://coccinelle.lip6.fr/): @exists@ type T; identifier b; @@ - T + bool b = ...; ... when any b = \(true\|false\) Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26Drivers: char: misc: 'misc_deregister()' changed the 'mutex_unlock' logic ↵Elad Wexler1-4/+4
upon an error This change improves code readability & is less error-prone. For example: case adding more error paths one should remember to call 'mutex_unlock' Signed-off-by: Elad Wexler <elad.wexler@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26misc: ibmasm: Remove casting the return value which is a void pointerJingoo Han1-1/+1
Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26char: xilinx_hwicap: Remove casting the return value which is a void pointerJingoo Han1-1/+1
Casting the return value which is a void pointer is redundant. The conversion from void pointer to any other pointer type is guaranteed by the C programming language. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: uio_sercos3: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: uio_netx: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: uio_mf624: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: uio_cif: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: uio_aec: remove unnecessary pci_set_drvdata()Jingoo Han1-1/+0
The driver core clears the driver data to NULL after device_release or on probe failure. Thus, it is not needed to manually clear the device driver data to NULL. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26uio: Simplify uio error path by using devres functionsMichal Simek2-36/+14
Using devres functions simplify driver error path. - Use devm_kzalloc - Use devm_request_irq Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: uio: mf624_disable_interrupt() can be staticFengguang Wu1-2/+2
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Rostislav Lisovy <lisovy@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26hpet: remove useless check if fixmem32 is NULLTomas Winkler1-2/+0
fixmem32 is assigned to address of res->data member so the address is always valid Actually since we are not checking for res != NULL static analyzing is complaining about referencing the pointer and consequent check for null. The code snippet looks confusing also for human eyes. Cc: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26drivers: misc: bmp085: remove '__init' from mp085_get_of_properties()Chen Gang1-1/+1
bmp085_get_of_properties() is called by bmp085_init_client() which is called by bmp085_probe() which is an EXPORT_SYMBOL_GPL function. bmp085_probe() is really used as a probe function by another modules (e.g. bmp085-i2c.c, bmp085-spi.c). Except bmp085_get_of_properties(), all functions have no '__init', so need remove '__init' from bmp085_get_of_properties() too, or at least, it will report related warning: WARNING: vmlinux.o(.text+0x4c8a07): Section mismatch in reference from the variable .LM171 to the variable .init.text:_bmp085_get_of_properties The function .LM171() references the variable __init _bmp085_get_of_properties. This is often because .LM171 lacks a __init annotation or the annotation of _bmp085_get_of_properties is wrong. Signed-off-by: Chen Gang <gang.chen@asianux.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: mei_cl_unlink: no need to loop over dev listTomas Winkler1-9/+4
we can call list_del_init regardless the client is linked or not it is always properly initialized Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: push credentials inside the irq write handlerTomas Winkler3-10/+34
this eventually allows as use a single write queue both for control and data messages and removing possible race Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: propagate error from write routines instead of ENODEVTomas Winkler4-27/+36
ENODEV will cause application to try to reconnect since it assumes that device went through the reset write errors are not always fatal it can happen due to resource contention Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: fix function names in debug printsAlexander Usyskin1-3/+3
Fix calling function names in debug prints. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: prefix client log messages with client me and host idsAlexander Usyskin3-32/+38
define cl_dbg and cl_err macros that add me and host id prefix for debug and error log messages so we can track for the client context of the flow. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26mei: mei_release: drop redundant check if cb is NULLTomas Winkler1-4/+1
mei_io_cb_free follows kfree design and check for NULL internally Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>