Geert Uytterhoeven fe7daa313d sh: mach-r2d: Handle virq offset in cascaded IRL demux ... commit ab8aa4f095 upstream. When booting rts7751r2dplus_defconfig on QEMU, the system hangs due to an interrupt storm on IRQ 20. IRQ 20 aka event 0x280 is a cascaded IRL interrupt, which maps to IRQ_VOYAGER, the interrupt used by the Silicon Motion SM501 multimedia companion chip. As rts7751r2d_irq_demux() does not take into account the new virq offset, the interrupt is no longer translated, leading to an unhandled interrupt. Fix this by taking into account the virq offset when translating cascaded IRL interrupts. Fixes: a8ac296114 ("sh: Avoid using IRQ0 on SH3 and SH4") Reported-by: Guenter Roeck <linux@roeck-us.net> Closes: https://lore.kernel.org/r/fbfea3ad-d327-4ad5-ac9c-648c7ca3fe1f@roeck-us.net Signed-off-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> Tested-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/2c99d5df41c40691f6c407b7b6a040d406bc81ac.1688901306.git.geert+renesas@glider.be Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-07-19 16:22:18 +02:00
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Kconfig	…
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irq.c	sh: mach-r2d: Handle virq offset in cascaded IRL demux	2023-07-19 16:22:18 +02:00
setup.c	…