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authorLinus Torvalds <torvalds@linux-foundation.org>2020-04-05 11:57:12 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-04-05 11:57:12 -0700
commite5adbd6ec480164fe30ee65c94426cb12d64bc99 (patch)
tree15d0bf67f01bfbac1b9da8fdf35f404b21c905ae /arch
parent70fbdfef4ba63eeef83b2c94eac9a5a9f913e442 (diff)
parenta67cd1fb660df8d8e093cb4b75343ef3dcd17cd6 (diff)
Merge tag 'irq-urgent-2020-04-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner: "Two reverts addressing regressions of the Xilinx interrupt controller driver which affected the PPC users" * tag 'irq-urgent-2020-04-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "irqchip/xilinx: Enable generic irq multi handler" Revert "irqchip/xilinx: Do not call irq_set_default_host()"
Diffstat (limited to 'arch')
-rw-r--r--arch/microblaze/Kconfig2
-rw-r--r--arch/microblaze/include/asm/irq.h3
-rw-r--r--arch/microblaze/kernel/irq.c21
3 files changed, 23 insertions, 3 deletions
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index 15baa6851e94..9606c244b5b8 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 cb6ab55d1d01..0a28e80bbab0 100644
--- a/arch/microblaze/include/asm/irq.h
+++ b/arch/microblaze/include/asm/irq.h
@@ -11,4 +11,7 @@
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();
}