MIPS: ralink: Fix clearing the illegal access interrupt

Due to a typo the illegal access interrupt is never cleared in by
the interupt handler, causing an effective deadlock on the first
illegal access.

This was broken since the code was introduced in 5433acd81e87 ("MIPS:
ralink: add illegal access driver"), but only exposed when the Kconfig
symbol was added, thus enabling the code.

Cc: <stable@vger.kernel.org>  [3.18+]
Fixes: a7b7aad383c ("MIPS: ralink: add missing symbol for RALINK_ILL_ACC")
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: John Crispin <blogic@openwrt.org>
Patchwork: https://patchwork.linux-mips.org/patch/10172/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/ralink/ill_acc.c b/arch/mips/ralink/ill_acc.c
index e20b02e3ae28be201789dd260ab79a382be944f8..e10d10b9e82a98bf5e53382d88cbc98b769ef53c 100644 (file)
--- a/arch/mips/ralink/ill_acc.c
+++ b/arch/mips/ralink/ill_acc.c
@@ -41,7 +41,7 @@ static irqreturn_t ill_acc_irq_handler(int irq, void *_priv)
                addr, (type >> ILL_ACC_OFF_S) & ILL_ACC_OFF_M,
                type & ILL_ACC_LEN_M);
 
-       rt_memc_w32(REG_ILL_ACC_TYPE, REG_ILL_ACC_TYPE);
+       rt_memc_w32(ILL_INT_STATUS, REG_ILL_ACC_TYPE);
 
        return IRQ_HANDLED;
 }