MIPS: Netlogic: Fix sign extension in PIC write

This does not cause a problem yet, but we do not want to write 1
to reserved bits.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5424/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/include/asm/netlogic/xlp-hal/pic.h b/arch/mips/include/asm/netlogic/xlp-hal/pic.h
index a981f46..4b5108d 100644 (file)
--- a/arch/mips/include/asm/netlogic/xlp-hal/pic.h
+++ b/arch/mips/include/asm/netlogic/xlp-hal/pic.h
@@ -315,7 +315,7 @@ nlm_pic_send_ipi(uint64_t base, int hwt, int irq, int nmi)
 {
        uint64_t ipi;
 
-       ipi = (nmi << 31) | (irq << 20);
+       ipi = ((uint64_t)nmi << 31) | (irq << 20);
        ipi |= ((hwt >> 4) << 16) | (1 << (hwt & 0xf)); /* cpuset and mask */
        nlm_write_pic_reg(base, PIC_IPI_CTL, ipi);
 }