linux-kernel - [tip:bkl/drivers] inifiband: Remove BKL from ipath

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Message-ID: <tip-f96d3015e9f7f7fff4cab7ed1d467664cc980061@git.kernel.org>
Date:	Wed, 14 Oct 2009 15:51:30 GMT
From:	tip-bot for Thomas Gleixner <tglx@...utronix.de>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	rdreier@...co.com, tglx@...utronix.de
Subject: [tip:bkl/drivers] inifiband: Remove BKL from ipath_open()

Commit-ID:  f96d3015e9f7f7fff4cab7ed1d467664cc980061
Gitweb:     http://git.kernel.org/tip/f96d3015e9f7f7fff4cab7ed1d467664cc980061
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Wed, 14 Oct 2009 16:36:26 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 14 Oct 2009 17:36:54 +0200

inifiband: Remove BKL from ipath_open()

cycle_kernel_lock() got pushed down to ipath_open(). I tried hard to
understand what it might protect, but finally gave up.

Roland noted that qlogic seems to have abandoned the ipath driver and
came to the following wise conclusion: "So I guess if the BKL stuff is
blocking you in any way, we can just drop it from ipath and leave it
as yet another race condition in a rotting old driver."

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
LKML-Reference: <adad44tj090.fsf@...co.com>
Cc: Roland Dreier <rdreier@...co.com>
---
 drivers/infiniband/hw/ipath/ipath_file_ops.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 40dbe54..73933a4 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -1821,7 +1821,6 @@ done:
 static int ipath_open(struct inode *in, struct file *fp)
 {
 	/* The real work is performed later in ipath_assign_port() */
-	cycle_kernel_lock();
 	fp->private_data = kzalloc(sizeof(struct ipath_filedata), GFP_KERNEL);
 	return fp->private_data ? 0 : -ENOMEM;
 }
--
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