From: Ruiqiang Hao <ruiqiang....@windriver.com>
The IRQF_NO_THREAD is added by a Marvell SDK12 patch commit 65549eba1b08
("mmc: octeontx2: fix swiotlb buffer is full") in order to get back some
of the performance loss. But in some cases (such as rt kernel), we need
the capability to thread irq handler. Otherwise we would get following
warnings because the normal spin lock is used in the irq handler. So drop
this constraint.
BUG: sleeping function called from invalid context at
kernel/locking/spinlock_rt.c:46
in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 767, name:
systemd-udevd
preempt_count: 10002, expected: 0
RCU nest depth: 0, expected: 0
Preemption disabled at:
[<ffff8000082319bc>] create_object.isra.0+0xfc/0x300
CPU: 0 PID: 767 Comm: systemd-udevd Tainted: G W
5.15.124-rt61-yocto-preempt-rt #2
Hardware name: Marvell OcteonTX CN96XX board (DT)
Call trace:
dump_backtrace+0x0/0x1c0
show_stack+0x20/0x30
dump_stack_lvl+0x68/0x84
dump_stack+0x18/0x34
__might_resched+0x154/0x1b0
rt_spin_lock+0x38/0xd0
free_iova_fast+0x9c/0x27c
__iommu_dma_unmap+0x164/0x174
iommu_dma_unmap_sg+0xb0/0x140
dma_unmap_sg_attrs+0x30/0x54
cvm_mmc_interrupt+0x2a4/0x5f0
__handle_irq_event_percpu+0x64/0x28c
handle_irq_event_percpu+0x68/0xc0
handle_irq_event+0x84/0xe0
handle_fasteoi_irq+0xc4/0x234
handle_domain_irq+0xa0/0xf0
gic_handle_irq+0x60/0x154
call_on_irq_stack+0x20/0x2c
do_interrupt_handler+0x5c/0x68
el1_interrupt+0x30/0x80
el1h_64_irq_handler+0x18/0x24
el1h_64_irq+0x78/0x7c
_raw_spin_unlock_irqrestore+0x20/0x6c
create_object.isra.0+0x19c/0x300
kmemleak_alloc+0x38/0x4c
kmem_cache_alloc+0x1e8/0x320
anon_vma_clone+0x74/0x1e0
anon_vma_fork+0x34/0x1e0
dup_mm+0x38c/0x5ac
copy_process+0x1594/0x16a0
kernel_clone+0x94/0x490
__do_sys_clone+0x70/0xac
__arm64_sys_clone+0x28/0x3c
invoke_syscall.constprop.0+0x58/0xf0
do_el0_svc+0x144/0x160
el0_svc+0x28/0xe0
el0t_64_sync_handler+0xa4/0x130
el0t_64_sync+0x1a0/0x1a4
Signed-off-by: Ruiqiang Hao <ruiqiang....@windriver.com>
---
drivers/mmc/host/cavium-thunderx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/host/cavium-thunderx.c
b/drivers/mmc/host/cavium-thunderx.c
index 8b8b45a43b75..5795dc7c2bb3 100644
--- a/drivers/mmc/host/cavium-thunderx.c
+++ b/drivers/mmc/host/cavium-thunderx.c
@@ -61,7 +61,7 @@ static int thunder_mmc_register_interrupts(struct
cvm_mmc_host *host,
/* register interrupts */
for (i = 0; i < nvec; i++) {
ret = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i),
- cvm_mmc_interrupt, IRQF_NO_THREAD,
+ cvm_mmc_interrupt, 0,
cvm_mmc_irq_names[i], host);
if (ret)
return ret;
--
2.35.5
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