[PATCH] irqchip/xilinx: fix shift out of bounds warning

[Radhey Shyam Pandey]

In case num_irq is 32 there is shift out of bound and result in false
warning "irq-xilinx: mismatch in kind-of-intr param" . To fix it cast
intr_mask to u64. It also fixes below shift out of bound warning
reported by UBSAN.

UBSAN: shift-out-of-bounds in irq-xilinx-intc.c:332:22
shift exponent 32 is too large for 32-bit type 'unsigned int'

Fixes: d50466c90724 ("microblaze: intc: Refactor DT sanity check")
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxx>
---
 drivers/irqchip/irq-xilinx-intc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-xilinx-intc.c b/drivers/irqchip/irq-xilinx-intc.c
index 238d3d344949..7e08714d507f 100644
--- a/drivers/irqchip/irq-xilinx-intc.c
+++ b/drivers/irqchip/irq-xilinx-intc.c
@@ -189,7 +189,7 @@ static int __init xilinx_intc_of_init(struct device_node *intc,
 		irqc->intr_mask = 0;
 	}
 
-	if (irqc->intr_mask >> irqc->nr_irq)
+	if ((u64)irqc->intr_mask >> irqc->nr_irq)
 		pr_warn("irq-xilinx: mismatch in kind-of-intr param\n");
 
 	pr_info("irq-xilinx: %pOF: num_irq=%d, edge=0x%x\n",

base-commit: 6a0e38264012809afa24113ee2162dc07f4ed22b
-- 
2.34.1