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2015-09-16genirq: Remove irq argument from irq flow handlersThomas Gleixner
Most interrupt flow handlers do not use the irq argument. Those few which use it can retrieve the irq number from the irq descriptor. Remove the argument. Search and replace was done with coccinelle and some extra helper scripts around it. Thanks to Julia for her help! Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Jiang Liu <jiang.liu@linux.intel.com>
2015-07-01Merge branch 'irq-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull irq fixes from Thomas Gleixner: "This contains: - a series of fixes for interrupt drivers to prevent a potential race when installing a chained interrupt handler - a fix for cpumask pointer misuse - a fix for using the wrong interrupt number from struct irq_data - removal of unused code and outdated comments - a few new helper functions which allow us to cleanup the interrupt handling code further in 4.3 I decided against doing the cleanup at the end of this merge window and rather do the preparatory steps for 4.3, so we can run the final ABI change at the end of the 4.3 merge window with less risk" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (26 commits) ARM/LPC32xx: Use irq not hwirq for __irq_set_handler_locked() genirq: Implement irq_set_handler_locked()/irq_set_chip_handler_name_locked() genirq: Introduce helper irq_desc_get_irq() genirq: Remove irq_node() genirq: Clean up outdated comments related to include/linux/irqdesc.h mn10300: Fix incorrect use of irq_data->affinity MIPS/ralink: Fix race in installing chained IRQ handler MIPS/pci: Fix race in installing chained IRQ handler MIPS/ath25: Fix race in installing chained IRQ handler MIPS/ath25: Fix race in installing chained IRQ handler m68k/psc: Fix race in installing chained IRQ handler avr32/at32ap: Fix race in installing chained IRQ handler sh/intc: Fix race in installing chained IRQ handler sh/intc: Fix potential race in installing chained IRQ handler pinctrl/sun4i: Fix race in installing chained IRQ handler pinctrl/samsung: Fix race in installing chained IRQ handler pinctrl/samsung: Fix race in installing chained IRQ handler pinctrl/exynos: Fix race in installing chained IRQ handler pinctrl/st: Fix race in installing chained IRQ handler pinctrl/adi2: Fix race in installing chained IRQ handler ...
2015-06-25MIPS/ath25: Fix race in installing chained IRQ handlerThomas Gleixner
Fix a race where a pending interrupt could be received and the handler called before the handler's data has been setup, by converting to irq_set_chained_handler_and_data(). Search and conversion was done with coccinelle: @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); | -irq_set_chained_handler(E1, E3); ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); ... | -irq_set_chained_handler(E1, E3); ... ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: linux-mips@linux-mips.org
2015-06-25MIPS/ath25: Fix race in installing chained IRQ handlerThomas Gleixner
Fix a race where a pending interrupt could be received and the handler called before the handler's data has been setup, by converting to irq_set_chained_handler_and_data(). Search and conversion was done with coccinelle: @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); | -irq_set_chained_handler(E1, E3); ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); @@ expression E1, E2, E3; @@ ( -if (irq_set_chained_handler(E1, E3) != 0) - BUG(); ... | -irq_set_chained_handler(E1, E3); ... ) -irq_set_handler_data(E1, E2); +irq_set_chained_handler_and_data(E1, E3, E2); Reported-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Julia Lawall <Julia.Lawall@lip6.fr> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: linux-mips@linux-mips.org
2015-06-21MIPS, IRQ: Use irq_desc_get_xxx() to avoid redundant lookup of irq_descJiang Liu
Use irq_desc_get_xxx() to avoid redundant lookup of irq_desc while we already have a pointer to corresponding irq_desc. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Aleksey Makarov <aleksey.makarov@auriga.com> Cc: David Daney <david.daney@cavium.com> Cc: Christoph Lameter <cl@linux.com> Cc: John Crispin <blogic@openwrt.org> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: x86@kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: linux-acpi@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/10086/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2015-06-21MIPS: ATH25: Remove legacy __cpuinit section that crept inPaul Gortmaker
We removed __cpuinit support (leaving no-op stubs) quite some time ago. However this one crept back in as of commit 43cc739fd98b8c517ad45756d869f ("MIPS: ath25: add common parts") Since we want to clobber the stubs soon, get this removed now. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/9891/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add Wireless device supportSergey Ryazanov
Atheros AR5312 and AR2315 both have a builtin wireless device, this patch add helper code and register platform device for all supported WiSoCs. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8249/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add AR2315 PCI host controller driverSergey Ryazanov
Add PCI host controller driver and DMA address calculation hook. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8246/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: register AR5312 flash controllerSergey Ryazanov
AR5312 SoC flash controller maps the flash content to memory and translates the memory access operations to the flash access operations. Such controller is fully supported by the physmap-flash driver. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>R5312 SoC flash Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8245/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add SoC type detectionSergey Ryazanov
Detect SoC type based on device ID and board configuration data. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8244/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add board configuration detectionSergey Ryazanov
All boards based on AR5312/AR2315 SoC have a special structure located at the end of flash. This structure contains board-specific data such as Ethernet and Wireless MAC addresses. The flash is mapped to the memmory at predefined location. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8243/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add UART supportSergey Ryazanov
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8242/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add early printk supportSergey Ryazanov
Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8241/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add interrupts handling routinesSergey Ryazanov
Add interrupts initialization and handling routines, also add AHB bus error interrupt handlers for both SoCs families. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8240/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: Add basic AR2315 SoC supportSergey Ryazanov
Add basic support for Atheros AR2315+ SoCs: registers definition file and initial setup code. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8239/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add basic AR5312 SoC supportSergey Ryazanov
Add basic support for Atheros AR5312/AR2312 SoCs: registers definition file and initial setup code. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8238/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-11-24MIPS: ath25: add common partsSergey Ryazanov
Add common code for Atheros AR5312 and Atheros AR2315 SoCs families. Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com> Cc: Linux MIPS <linux-mips@linux-mips.org> Patchwork: https://patchwork.linux-mips.org/patch/8237 Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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