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authorMarc Zyngier <maz@kernel.org>2020-03-30 10:43:59 +0100
committerMarc Zyngier <maz@kernel.org>2020-04-01 09:12:24 +0100
commit4cea749d56bec9409f3bd126d2b2f949dc6c66e2 (patch)
tree0828f56c2e90ff58a111121a34ec200686304dea /arch/microblaze/kernel/irq.c
parente02f6c01748df77b3fe202bbf7dde0aae6ecced7 (diff)
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/kernel/irq.c')
-rw-r--r--arch/microblaze/kernel/irq.c21
1 files changed, 20 insertions, 1 deletions
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();
}