Unverified Commit b1c17765 authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
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!4524 fix spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected 

Merge Pull Request from: @slim6882 
 
Return IRQ_NONE from the interrupt handler when no interrupt was
detected. Because an empty interrupt will cause a null pointer error:

Unable to handle kernel NULL pointer dereference at virtual
address 0000000000000008
Call trace:
complete+0x54/0x100
hisi_sfc_v3xx_isr+0x2c/0x40 [spi_hisi_sfc_v3xx]
__handle_irq_event_percpu+0x64/0x1e0
handle_irq_event+0x7c/0x1cc
 
 
Link:https://gitee.com/openeuler/kernel/pulls/4524

 

Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents a93c31a2 68ded447

drivers/spi/spi-hisi-sfc-v3xx.c

+5 −0
Original line number Diff line number Diff line
@@ -377,6 +377,11 @@ static const struct spi_controller_mem_ops hisi_sfc_v3xx_mem_ops = { 
static irqreturn_t hisi_sfc_v3xx_isr(int irq, void *data)

{

	struct hisi_sfc_v3xx_host *host = data;

	u32 reg;



	reg = readl(host->regbase + HISI_SFC_V3XX_INT_STAT);

	if (!reg)

		return IRQ_NONE;



	hisi_sfc_v3xx_disable_int(host);