diff options
| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2017-03-10 11:37:01 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-13 19:48:18 +0200 |
| commit | 31462de6ba1d0a60299665ef40caeaf517bfd632 (patch) | |
| tree | 5c6c829f39c2da262283c4fbc60e93de62f4fe04 /arch/powerpc/sysdev | |
| parent | 80c9698bd6a8f0385167c20eccd8d9dda25577a0 (diff) | |
powerpc/8xx: fix mpc8xx_get_irq() return on no irq
[ Upstream commit 3c29b6038828c1f4c9ecbfec14d4fc5e25f1c947 ]
IRQ 0 is a valid HW interrupt. So get_irq() shall return 0 when
there is no irq, instead of returning irq_linear_revmap(... ,0)
Fixes: f2a0bd3753dad ("[POWERPC] 8xx: powerpc port of core CPM PIC")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/powerpc/sysdev')
| -rw-r--r-- | arch/powerpc/sysdev/mpc8xx_pic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/mpc8xx_pic.c b/arch/powerpc/sysdev/mpc8xx_pic.c index 3e828b20c21e..2842f9d63d21 100644 --- a/arch/powerpc/sysdev/mpc8xx_pic.c +++ b/arch/powerpc/sysdev/mpc8xx_pic.c @@ -79,7 +79,7 @@ unsigned int mpc8xx_get_irq(void) irq = in_be32(&siu_reg->sc_sivec) >> 26; if (irq == PIC_VEC_SPURRIOUS) - irq = 0; + return 0; return irq_linear_revmap(mpc8xx_pic_host, irq); |