[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20190729190756.898918407@linuxfoundation.org>
Date: Mon, 29 Jul 2019 21:21:39 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Christoph Hellwig <hch@...radead.org>,
Mathieu Malaterre <malat@...ian.org>,
Michael Neuling <mikey@...ling.org>,
Michael Ellerman <mpe@...erman.id.au>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.2 103/215] powerpc: silence a -Wcast-function-type warning in dawr_write_file_bool
[ Upstream commit 548c54acba5bd1388d50727a9a126a42d0cd4ad0 ]
In commit c1fe190c0672 ("powerpc: Add force enable of DAWR on P9
option") the following piece of code was added:
smp_call_function((smp_call_func_t)set_dawr, &null_brk, 0);
Since GCC 8 this triggers the following warning about incompatible
function types:
arch/powerpc/kernel/hw_breakpoint.c:408:21: error: cast between incompatible function types from 'int (*)(struct arch_hw_breakpoint *)' to 'void (*)(void *)' [-Werror=cast-function-type]
Since the warning is there for a reason, and should not be hidden behind
a cast, provide an intermediate callback function to avoid the warning.
Fixes: c1fe190c0672 ("powerpc: Add force enable of DAWR on P9 option")
Suggested-by: Christoph Hellwig <hch@...radead.org>
Signed-off-by: Mathieu Malaterre <malat@...ian.org>
Signed-off-by: Michael Neuling <mikey@...ling.org>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
arch/powerpc/kernel/hw_breakpoint.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c
index a293a53b4365..50262597c222 100644
--- a/arch/powerpc/kernel/hw_breakpoint.c
+++ b/arch/powerpc/kernel/hw_breakpoint.c
@@ -370,6 +370,11 @@ void hw_breakpoint_pmu_read(struct perf_event *bp)
bool dawr_force_enable;
EXPORT_SYMBOL_GPL(dawr_force_enable);
+static void set_dawr_cb(void *info)
+{
+ set_dawr(info);
+}
+
static ssize_t dawr_write_file_bool(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
@@ -389,7 +394,7 @@ static ssize_t dawr_write_file_bool(struct file *file,
/* If we are clearing, make sure all CPUs have the DAWR cleared */
if (!dawr_force_enable)
- smp_call_function((smp_call_func_t)set_dawr, &null_brk, 0);
+ smp_call_function(set_dawr_cb, &null_brk, 0);
return rc;
}
--
2.20.1
Powered by blists - more mailing lists