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From: Yorick Rommers <yorick-rommers@hotmail.com>
To: joe@perches.com
Cc: lidza.louina@gmail.com, markh@compro.net,
	gregkh@linuxfoundation.org,
	driverdev-devel@linuxdriverproject.org,
	devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
	Yorick Rommers <yorick-rommers@hotmail.com>
Subject: [PATCH] Staging: dgnc: Using a temporary value for repeated dereferences.
Date: Mon, 20 Apr 2015 09:33:04 +0200	[thread overview]
Message-ID: <BLU436-SMTP4415B31E1C38072994283D9EE00@phx.gbl> (raw)
In-Reply-To: <1429491259.27863.1.camel@perches.com>

Sorry, it has been changed in the patch below.

---------------------------------------

A patch for a line being too long (>80) in dgnc_mgmt.c,
fixed by making a temporary value for dgnc_Board[brd],
replacing all instanced of dgnc_Board[brd] with temporary value,
and removing unnecessary typecasts.

Signed-off-by: Yorick Rommers <yorick-rommers@hotmail.com>
---
 drivers/staging/dgnc/dgnc_mgmt.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_mgmt.c b/drivers/staging/dgnc/dgnc_mgmt.c
index b13318a..ac2581a 100644
--- a/drivers/staging/dgnc/dgnc_mgmt.c
+++ b/drivers/staging/dgnc/dgnc_mgmt.c
@@ -131,6 +131,7 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		int brd;

 		struct digi_info di;
+		struct dgnc_board *bd;

 		if (copy_from_user(&brd, uarg, sizeof(int)))
 			return -EFAULT;
@@ -142,19 +143,21 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)

 		di.info_bdnum = brd;

-		spin_lock_irqsave(&dgnc_Board[brd]->bd_lock, flags);
+		bd = dgnc_Board[brd];

-		di.info_bdtype = dgnc_Board[brd]->dpatype;
-		di.info_bdstate = dgnc_Board[brd]->dpastatus;
+		spin_lock_irqsave(&bd->bd_lock, flags);
+
+		di.info_bdtype = bd->dpatype;
+		di.info_bdstate = bd->dpastatus;
 		di.info_ioport = 0;
-		di.info_physaddr = (ulong) dgnc_Board[brd]->membase;
-		di.info_physsize = (ulong) dgnc_Board[brd]->membase - dgnc_Board[brd]->membase_end;
-		if (dgnc_Board[brd]->state != BOARD_FAILED)
-			di.info_nports = dgnc_Board[brd]->nasync;
+		di.info_physaddr = bd->membase;
+		di.info_physsize = bd->membase - bd->membase_end;
+		if (bd->state != BOARD_FAILED)
+			di.info_nports = bd->nasync;
 		else
 			di.info_nports = 0;

-		spin_unlock_irqrestore(&dgnc_Board[brd]->bd_lock, flags);
+		spin_unlock_irqrestore(&bd->bd_lock, flags);

 		if (copy_to_user(uarg, &di, sizeof(di)))
 			return -EFAULT;
--
2.3.5


WARNING: multiple messages have this Message-ID (diff)
From: Yorick Rommers <yorick-rommers@hotmail.com>
To: joe@perches.com
Cc: devel@driverdev.osuosl.org, lidza.louina@gmail.com,
	driverdev-devel@linuxdriverproject.org,
	linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org,
	Yorick Rommers <yorick-rommers@hotmail.com>
Subject: [PATCH] Staging: dgnc: Using a temporary value for repeated dereferences.
Date: Mon, 20 Apr 2015 09:33:04 +0200	[thread overview]
Message-ID: <BLU436-SMTP4415B31E1C38072994283D9EE00@phx.gbl> (raw)
In-Reply-To: <1429491259.27863.1.camel@perches.com>

Sorry, it has been changed in the patch below.

---------------------------------------

A patch for a line being too long (>80) in dgnc_mgmt.c,
fixed by making a temporary value for dgnc_Board[brd],
replacing all instanced of dgnc_Board[brd] with temporary value,
and removing unnecessary typecasts.

Signed-off-by: Yorick Rommers <yorick-rommers@hotmail.com>
---
 drivers/staging/dgnc/dgnc_mgmt.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/dgnc/dgnc_mgmt.c b/drivers/staging/dgnc/dgnc_mgmt.c
index b13318a..ac2581a 100644
--- a/drivers/staging/dgnc/dgnc_mgmt.c
+++ b/drivers/staging/dgnc/dgnc_mgmt.c
@@ -131,6 +131,7 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		int brd;

 		struct digi_info di;
+		struct dgnc_board *bd;

 		if (copy_from_user(&brd, uarg, sizeof(int)))
 			return -EFAULT;
@@ -142,19 +143,21 @@ long dgnc_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)

 		di.info_bdnum = brd;

-		spin_lock_irqsave(&dgnc_Board[brd]->bd_lock, flags);
+		bd = dgnc_Board[brd];

-		di.info_bdtype = dgnc_Board[brd]->dpatype;
-		di.info_bdstate = dgnc_Board[brd]->dpastatus;
+		spin_lock_irqsave(&bd->bd_lock, flags);
+
+		di.info_bdtype = bd->dpatype;
+		di.info_bdstate = bd->dpastatus;
 		di.info_ioport = 0;
-		di.info_physaddr = (ulong) dgnc_Board[brd]->membase;
-		di.info_physsize = (ulong) dgnc_Board[brd]->membase - dgnc_Board[brd]->membase_end;
-		if (dgnc_Board[brd]->state != BOARD_FAILED)
-			di.info_nports = dgnc_Board[brd]->nasync;
+		di.info_physaddr = bd->membase;
+		di.info_physsize = bd->membase - bd->membase_end;
+		if (bd->state != BOARD_FAILED)
+			di.info_nports = bd->nasync;
 		else
 			di.info_nports = 0;

-		spin_unlock_irqrestore(&dgnc_Board[brd]->bd_lock, flags);
+		spin_unlock_irqrestore(&bd->bd_lock, flags);

 		if (copy_to_user(uarg, &di, sizeof(di)))
 			return -EFAULT;
--
2.3.5

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  reply	other threads:[~2015-04-20  7:31 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-19 19:18 [PATCH] Staging: dgnc: fixed code style issue Yorick Rommers
2015-04-19 20:34 ` Joe Perches
2015-04-19 21:58   ` [PATCH] Staging: dgnc: Using temporary value for repeated dereferences Yorick Rommers
2015-04-20  0:54     ` Joe Perches
2015-04-20  0:54       ` Joe Perches
2015-04-20  7:33       ` Yorick Rommers [this message]
2015-04-20  7:33         ` [PATCH] Staging: dgnc: Using a " Yorick Rommers
2015-05-03 18:50         ` Greg KH
2015-05-03 18:50           ` Greg KH
2015-04-20  8:33       ` [PATCH] Staging: dgnc: Using " Dan Carpenter
2015-04-20 10:42         ` gcc doesn't warn about uninitialized variable use in switch/case with -O (was: Re: [PATCH] Staging: dgnc: Using temporary value for repeated dereferences) Joe Perches
2015-04-20 12:28           ` Joe Perches
2015-04-20 12:28             ` Joe Perches
2015-04-20  8:27     ` [PATCH] Staging: dgnc: Using temporary value for repeated dereferences Dan Carpenter
2015-04-20  8:13 ` [PATCH] Staging: dgnc: fixed code style issue Dan Carpenter

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