diff options
| author | Marc Zyngier <maz@kernel.org> | 2020-03-30 11:43:59 +0200 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2020-04-01 10:12:24 +0200 |
| commit | 4cea749d56bec9409f3bd126d2b2f949dc6c66e2 (patch) | |
| tree | 0828f56c2e90ff58a111121a34ec200686304dea /arch/microblaze | |
| parent | Revert "irqchip/xilinx: Do not call irq_set_default_host()" (diff) | |
| download | linux-4cea749d56bec9409f3bd126d2b2f949dc6c66e2.tar.xz linux-4cea749d56bec9409f3bd126d2b2f949dc6c66e2.zip | |
Revert "irqchip/xilinx: Enable generic irq multi handler"
This reverts commit a0789993bf8266e62fea6b4613945ba081c71e7d, which
breaks a number of PPC platforms.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/44b64be7-9240-fd52-af90-e0245220f38b@xilinx.com
Diffstat (limited to 'arch/microblaze')
| -rw-r--r-- | arch/microblaze/Kconfig | 2 | ||||
| -rw-r--r-- | arch/microblaze/include/asm/irq.h | 3 | ||||
| -rw-r--r-- | arch/microblaze/kernel/irq.c | 21 |
3 files changed, 23 insertions, 3 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index 242f58ec086b..6a331bd57ea8 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -47,8 +47,6 @@ config MICROBLAZE select CPU_NO_EFFICIENT_FFS select MMU_GATHER_NO_RANGE if MMU select SPARSE_IRQ - select GENERIC_IRQ_MULTI_HANDLER - select HANDLE_DOMAIN_IRQ # Endianness selection choice diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h index 5166f0893e2b..eac2fb4b3fb9 100644 --- a/arch/microblaze/include/asm/irq.h +++ b/arch/microblaze/include/asm/irq.h @@ -14,4 +14,7 @@ struct pt_regs; extern void do_IRQ(struct pt_regs *regs); +/* should be defined in each interrupt controller driver */ +extern unsigned int xintc_get_irq(void); + #endif /* _ASM_MICROBLAZE_IRQ_H */ diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c index 0b37dde60a1e..903dad822fad 100644 --- a/arch/microblaze/kernel/irq.c +++ b/arch/microblaze/kernel/irq.c @@ -20,10 +20,29 @@ #include <linux/irqchip.h> #include <linux/of_irq.h> +static u32 concurrent_irq; + void __irq_entry do_IRQ(struct pt_regs *regs) { + unsigned int irq; + struct pt_regs *old_regs = set_irq_regs(regs); trace_hardirqs_off(); - handle_arch_irq(regs); + + irq_enter(); + irq = xintc_get_irq(); +next_irq: + BUG_ON(!irq); + generic_handle_irq(irq); + + irq = xintc_get_irq(); + if (irq != -1U) { + pr_debug("next irq: %d\n", irq); + ++concurrent_irq; + goto next_irq; + } + + irq_exit(); + set_irq_regs(old_regs); trace_hardirqs_on(); } |