From: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
To: netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org,
Eli Cohen <eli-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] mlx5: avoid build warnings on 32-bit
Date: Tue, 13 Jan 2015 17:08:06 +0100 [thread overview]
Message-ID: <4105686.Jz5UR0277i@wuerfel> (raw)
The mlx5 driver passes a string pointer in through a 'u64' variable,
which on 32-bit machines causes a build warning:
drivers/net/ethernet/mellanox/mlx5/core/debugfs.c: In function 'qp_read_field':
drivers/net/ethernet/mellanox/mlx5/core/debugfs.c:303:11: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
The code is in fact safe, so we can shut up the warning by adding
extra type casts.
Signed-off-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
index 10e1f1a18255..4878025e231c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/debugfs.c
@@ -300,11 +300,11 @@ static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
param = qp->pid;
break;
case QP_STATE:
- param = (u64)mlx5_qp_state_str(be32_to_cpu(ctx->flags) >> 28);
+ param = (unsigned long)mlx5_qp_state_str(be32_to_cpu(ctx->flags) >> 28);
*is_str = 1;
break;
case QP_XPORT:
- param = (u64)mlx5_qp_type_str((be32_to_cpu(ctx->flags) >> 16) & 0xff);
+ param = (unsigned long)mlx5_qp_type_str((be32_to_cpu(ctx->flags) >> 16) & 0xff);
*is_str = 1;
break;
case QP_MTU:
@@ -464,7 +464,7 @@ static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
if (is_str)
- ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)field);
+ ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
else
ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
--
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next reply other threads:[~2015-01-13 16:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-13 16:08 Arnd Bergmann [this message]
2015-01-13 16:28 ` [PATCH] mlx5: avoid build warnings on 32-bit Eli Cohen
2015-01-13 20:25 ` Arnd Bergmann
2015-01-13 22:08 ` David Miller
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