+ cris-gpio-undo-locks-before-returning.patch added to -mm tree

+ cris-gpio-undo-locks-before-returning.patch added to -mm tree

[akpm]

The patch titled
     cris gpio: undo locks before returning
has been added to the -mm tree.  Its filename is
     cris-gpio-undo-locks-before-returning.patch

*** Remember to use Documentation/SubmitChecklist when testing your code ***

See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this

------------------------------------------------------
Subject: cris gpio: undo locks before returning
From: Roel Kluin <12o3l@tiscali.nl>

Signed-off-by: Roel Kluin <12o3l@tiscali.nl>
Cc: Mikael Starvik <starvik@axis.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/cris/arch-v10/drivers/gpio.c |   15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff -puN arch/cris/arch-v10/drivers/gpio.c~cris-gpio-undo-locks-before-returning arch/cris/arch-v10/drivers/gpio.c
--- a/arch/cris/arch-v10/drivers/gpio.c~cris-gpio-undo-locks-before-returning
+++ a/arch/cris/arch-v10/drivers/gpio.c
@@ -297,8 +297,10 @@ gpio_poll(struct file *file,
 		data = *R_PORT_PB_DATA;
 	else if (priv->minor == GPIO_MINOR_G)
 		data = *R_PORT_G_DATA;
-	else
+	else {
+		spin_unlock(&gpio_lock);
 		return 0;
+	}
 	
 	if ((data & priv->highalarm) ||
 	    (~data & priv->lowalarm)) {
@@ -381,18 +383,21 @@ static ssize_t gpio_write(struct file * 
 
 	ssize_t retval = count;
 	if (priv->minor !=GPIO_MINOR_A && priv->minor != GPIO_MINOR_B) {
-		return -EFAULT;
+		retval = -EFAULT;
+		goto out;
 	}
     
 	if (!access_ok(VERIFY_READ, buf, count)) {
-		return -EFAULT;
+		retval = -EFAULT;
+		goto out;
 	}
 	clk_mask = priv->clk_mask;
 	data_mask = priv->data_mask;
 	/* It must have been configured using the IO_CFG_WRITE_MODE */
 	/* Perhaps a better error code? */
 	if (clk_mask == 0 || data_mask == 0) {
-		return -EPERM;
+		retval = -EPERM;
+		goto out;
 	}
 	write_msb = priv->write_msb;
 	D(printk("gpio_write: %lu to data 0x%02X clk 0x%02X msb: %i\n",count, data_mask, clk_mask, write_msb));
@@ -425,6 +430,7 @@ static ssize_t gpio_write(struct file * 
 			}
 		}
 	}
+out:
 	spin_unlock(&gpio_lock);
 	return retval;
 }
@@ -506,6 +512,7 @@ gpio_release(struct inode *inode, struct
 	while (p) {
 		if (p->highalarm | p->lowalarm) {
 			gpio_some_alarms = 1;
+			spin_unlock(&gpio_lock);
 			return 0;
 		}
 		p = p->next;
_

Patches currently in -mm which might be from 12o3l@tiscali.nl are

origin.patch
git-arm-master.patch
unlock-when-ssp-tries-to-close-an-invalid-port.patch
dvb-dont-return-with-locks-held.patch
lmc_ioctl-dont-return-with-locks-held.patch
lmc_ioctl-dont-return-with-locks-held-fix.patch
git-ocfs2.patch
git-s390.patch
itco_wdt_start-undo-locking-when-reboot-is-disabled.patch
cris-gpio-undo-locks-before-returning.patch
i4l-errors-with-assignments-in-if.patch