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sh: Avoid using IRQ0 on SH3 and SH4

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IRQ0 is no longer returned by platform_get_irq() and its ilk -- they now
return -EINVAL instead.  However, the kernel code supporting SH3/4-based
SoCs still maps the IRQ #s starting at 0 -- modify that code to start the
IRQ #s from 16 instead.

The patch should mostly affect the AP-SH4A-3A/AP-SH4AD-0A boards as they
indeed are using IRQ0 for the SMSC911x compatible Ethernet chip.

Fixes: ce753ad154 ("platform: finally disallow IRQ0 in platform_get_irq() and its ilk")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/71105dbf-cdb0-72e1-f9eb-eeda8e321696@omp.ru
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
This commit is contained in:
Sergey Shtylyov
2023-06-01 23:22:17 +03:00
committed by John Paul Adrian Glaubitz
parent bc9d1f0cec
commit a8ac296114
6 changed files with 9 additions and 9 deletions
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6
include/linux/sh_intc.h
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@@ -13,9 +13,9 @@
/*
* Convert back and forth between INTEVT and IRQ values.
*/
#ifdef CONFIG_CPU_HAS_INTEVT
#define evt2irq(evt) (((evt) >> 5) - 16)
#define irq2evt(irq) (((irq) + 16) << 5)
#ifdef CONFIG_CPU_HAS_INTEVT /* Avoid IRQ0 (invalid for platform devices) */
#define evt2irq(evt) ((evt) >> 5)
#define irq2evt(irq) ((irq) << 5)
#else
#define evt2irq(evt) (evt)
#define irq2evt(irq) (irq)