summaryrefslogtreecommitdiff
path: root/drivers/staging/gasket/gasket_interrupt.c
AgeCommit message (Collapse)Author
2019-03-18staging: gasket: gasket_interuppt.c: Fix string split issue.Sanjana Sanikommu
Remove string " across the line. Issue found by checkpatch.pl semantic patch results for rtw_ap.c Signed-off-by: Sanjana Sanikommu <sanjana99reddy99@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-22staging: gasket: interrupt: remove unused including <linux/version.h>Yue Haibing
Remove including <linux/version.h> that don't need it. Signed-off-by: Yue Haibing <yuehaibing@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-11-05staging: gasket: use sizeof(*p) for memory allocationKimberly Brown
Use sizeof(*p) instead of sizeof(struct P) for memory allocation. This change complies with the Linux kernel coding style. It improves readability and decreases the opportunity for bugs if the pointer variable type is changed. Issue found by checkpatch. Signed-off-by: Kimberly Brown <kimbrownkd@gmail.com> Acked-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-09-18staging: gasket: interrupt: remove PCI-MSIX-specific status checkTodd Poynor
Devices not using MSIX don't use the msix_initialized field, so don't require it to be set in the interrupt system status check. The general check for interrupts configured that follows can cover both MSIX and device-managed interrupts. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-27staging: gasket: interrupt: remove unimplemented interrupt typesTodd Poynor
Interrupt types PCI_MSI and PLATFORM_WIRE are unused and unimplemented. Remove these. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-27staging: gasket: interrupt: simplify interrupt init parametersTodd Poynor
Pass the gasket driver descriptor to the interrupt init function, rather than exploding out separate parameters from various fields of that structure. This allows us to make more localized changes to the types of interrupts supported (MSIX vs. wire, etc.) without affecting the calling sequence, and seems nicer for simplification purposes. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-27staging: gasket: interrupt: refactor PCI MSIX-specific handler codeTodd Poynor
Split interrupt handler into PCI MSIX-specific and generic functions, for adding non-MSIX handlers in the future. Move MSIX init code together,, out of generic init path. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-08staging: gasket: remove some extra semicolonzhong jiang
That semicolons are unneeded, Just remove them. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-01staging: gasket: interrupt: fix function param line continuation styleTodd Poynor
Fix multi-line alignment formatting to look like: int ret = long_function_name(device, VARIABLE1, VARIABLE2, VARIABLE3, VARIABLE4); Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-08-01staging: gasket: interrupt: remove static function forward declarationsTodd Poynor
Remove forward declarations of static functions, move code to avoid forward references, for kernel style. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-30staging: gasket: interrupt: simplify comments for static functionsTodd Poynor
Static functions don't need kernel doc formatting, can be simplified. Reformat comments that can be single-line. Remove extraneous text. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-27staging: gasket: interrupt: convert to standard loggingTodd Poynor
Convert gasket logging calls to standard functions. Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-24staging: gasket: interrupts: convert various logs to debug levelTodd Poynor
Debugging information is improperly logged at non-debug log level in a number of places, and some logs regarding error conditions may be generated too frequently, such that these could cause performance problems and/or obscure other logs. Convert these to debug log level. Signed-off-by: Zhongze Hu <frankhu@chromium.org> Signed-off-by: Todd Poynor <toddpoynor@google.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-14staging: gasket: remove gasket_interrupt_get_msix_entries()Greg Kroah-Hartman
No one calls it, it is claimed to be "legacy", whatever that means, so just remove the dead code. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-14staging: gasket: remove gasket_interrupt_trigger_eventfd()Greg Kroah-Hartman
No one calls it, so just remove the dead code. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-14staging: gasket: remove gasket_interrupt_get_eventfd_ctxs()Greg Kroah-Hartman
It is exported, yet no one calls it so just remove the dead code. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-14staging: gasket: remove pointless gasket_interrupt_pause()Greg Kroah-Hartman
gasket_interrupt_pause() does nothing, and no one calls it, so remove it as it is dead-weight. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-12staging: gasket: remove redundant license informationGreg Kroah-Hartman
Now that the SPDX tag is in all gasket files, that identifies the license in a specific and legally-defined manner. So the extra GPL text wording can be removed as it is no longer needed at all. This is done on a quest to remove the 700+ different ways that files in the kernel describe the GPL license text. And there's unneeded stuff like the address (sometimes incorrect) for the FSF which is never needed. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-12staging: gasket: add SPDX identifiers to all files.Greg Kroah-Hartman
It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Fix up the all of the staging gasket files to have a proper SPDX identifier, based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. Cc: Rob Springer <rspringer@google.com> Cc: John Joseph <jnjoseph@google.com> Cc: Ben Chan <benchan@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-06Staging: Gasket: fix a couple off by one bugsDan Carpenter
The > should be >= or we end up writing one element beyond the end of the interrupt_data->eventfd_ctxs[] array. Fixes: 9a69f5087ccc ("drivers/staging: Gasket driver framework + Apex driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-06drivers/staging/gasket: Use 2-factor allocator callsKees Cook
As already done treewide, switch from open-coded multiplication to using 2-factor allocator helpers. Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-07-02drivers/staging: Gasket driver framework + Apex driverSimon Que
The Gasket (Google ASIC Software, Kernel Extensions, and Tools) kernel framework is a generic, flexible system that supports thin kernel drivers. Gasket kernel drivers are expected to handle opening and closing devices, mmap'ing BAR space as requested, a small selection of ioctls, and handling page table translation (covered below). Any other functions should be handled by userspace code. The Gasket common module is not enough to run a device. In order to customize the Gasket code for a given piece of hardware, a device specific module must be created. At a minimum, this module must define a struct gasket_driver_desc containing the device-specific data for use by the framework; in addition, the module must declare an __init function that calls gasket_register_device with the module's gasket_driver_desc struct. Finally, the driver must define an exit function that calls gasket_unregister_device with the module's gasket_driver_desc struct. One of the core assumptions of the Gasket framework is that precisely one process is allowed to have an open write handle to the device node at any given time. (That process may, once it has one write handle, open any number of additional write handles.) This is accomplished by tracking open and close data for each driver instance. Signed-off-by: Rob Springer <rspringer@google.com> Signed-off-by: John Joseph <jnjoseph@google.com> Signed-off-by: Simon Que <sque@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>