linux-kernel - [PATCH] m68k: mvme147: Fix SCSI controller IRQ numbers

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Message-Id: <0e7636a21a0274eea35bfd5d874459d5078e97cc.1727926187.git.fthain@linux-m68k.org>
Date: Thu, 03 Oct 2024 13:29:47 +1000
From: Finn Thain <fthain@...ux-m68k.org>
To: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: "Daniel Palmer" <daniel@...f.com>,
    stable@...nel.org,
    linux-m68k@...ts.linux-m68k.org,
    linux-kernel@...r.kernel.org
Subject: [PATCH] m68k: mvme147: Fix SCSI controller IRQ numbers

From: Daniel Palmer <daniel@...f.com>

Sometime long ago the m68k IRQ code was refactored and the interrupt
numbers for SCSI controller on this board ended up wrong, and it hasn't
worked since.

The PCC adds 0x40 to the vector for its interrupts so they end up in
the user interrupt range. Hence, the kernel number should be the kernel
offset for user interrupt range + the PCC interrupt number.

Cc: Daniel Palmer <daniel@...f.com>
Cc: stable@...nel.org
Fixes: 200a3d352cd5 ("[PATCH] m68k: convert VME irq code")
Signed-off-by: Daniel Palmer <daniel@...f.com>
Reviewed-by: Finn Thain <fthain@...ux-m68k.org>
---
 arch/m68k/include/asm/mvme147hw.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/m68k/include/asm/mvme147hw.h b/arch/m68k/include/asm/mvme147hw.h
index 2b147ab1d189..6ad93bac06f9 100644
--- a/arch/m68k/include/asm/mvme147hw.h
+++ b/arch/m68k/include/asm/mvme147hw.h
@@ -76,8 +76,8 @@ struct pcc_regs {
 #define M147_SCC_B_ADDR		0xfffe3000
 #define M147_SCC_PCLK		5000000
 
-#define MVME147_IRQ_SCSI_PORT	(IRQ_USER+0x45)
-#define MVME147_IRQ_SCSI_DMA	(IRQ_USER+0x46)
+#define MVME147_IRQ_SCSI_PORT	(IRQ_USER + 5)
+#define MVME147_IRQ_SCSI_DMA	(IRQ_USER + 6)
 
 /* SCC interrupts, for MVME147 */
 
-- 
2.39.5