linux-kernel - [PATCH] staging/lustre: echo_client.c - fix sparse warning: cast removes address space of expression

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Message-Id: <20170608053527.21599-1-kedrot@gmail.com>
Date:   Thu,  8 Jun 2017 02:35:27 -0300
From:   "Guillermo O. Freschi" <kedrot@...il.com>
To:     Oleg Drokin <oleg.drokin@...el.com>,
        Andreas Dilger <andreas.dilger@...el.com>,
        lustre-devel@...ts.lustre.org, linux-kernel@...r.kernel.org
Cc:     "Guillermo O. Freschi" <kedrot@...il.com>
Subject: [PATCH] staging/lustre: echo_client.c - fix sparse warning: cast removes address space of expression

The function only cares about the value of the pointer, not the contents
of the pointed-to data. Adding a `__force` annotation to the cast
removes this warning.

Signed-off-by: Guillermo O. Freschi <kedrot@...il.com>
---
 drivers/staging/lustre/lustre/obdecho/echo_client.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/lustre/lustre/obdecho/echo_client.c b/drivers/staging/lustre/lustre/obdecho/echo_client.c
index d4768311cf92..1757714c56a0 100644
--- a/drivers/staging/lustre/lustre/obdecho/echo_client.c
+++ b/drivers/staging/lustre/lustre/obdecho/echo_client.c
@@ -1428,7 +1428,7 @@ static int echo_client_brw_ioctl(const struct lu_env *env, int rw,
 	oa->o_valid &= ~OBD_MD_FLHANDLE;
 
 	/* OFD/obdfilter works only via prep/commit */
-	test_mode = (long)data->ioc_pbuf1;
+	test_mode = (__force long)data->ioc_pbuf1;
 	if (test_mode == 1)
 		async = 0;
 
-- 
2.11.0