[PATCH 5.4 225/408] powerpc/tau: Remove duplicated set_thresholds() call

Greg Kroah-Hartman
2020-10-27T14:38:48Z

From: Finn Thain <fthain@telegraphics.com.au>

[ Upstream commit 420ab2bc7544d978a5d0762ee736412fe9c796ab ]

The commentary at the call site seems to disagree with the code. The
conditional prevents calling set_thresholds() via the exception handler,
which appears to crash. Perhaps that's because it immediately triggers
another TAU exception. Anyway, calling set_thresholds() from TAUupdate()
is redundant because tau_timeout() does so.

Fixes: 1da177e4c3f41 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/d7c7ee33232cf72a6a6bbb6ef05838b2e2b113c0.1599260540.git.fthain@telegraphics.com.au
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/kernel/tau_6xx.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/arch/powerpc/kernel/tau_6xx.c b/arch/powerpc/kernel/tau_6xx.c
index 268205cc347da..b8d7e7d498e0a 100644
--- a/arch/powerpc/kernel/tau_6xx.c
+++ b/arch/powerpc/kernel/tau_6xx.c
@@ -110,11 +110,6 @@ static void TAUupdate(int cpu)
#ifdef DEBUG
printk("grew = %d\n", tau[cpu].grew);
#endif
-
-#ifndef CONFIG_TAU_INT /* tau_timeout will do this if not using interrupts */
- set_thresholds(cpu);
-#endif
-
}

#ifdef CONFIG_TAU_INT
--
2.25.1