+ pps-locking-scheme-fix-up-for-pps_getparams.patch added to -mm tree

+ pps-locking-scheme-fix-up-for-pps_getparams.patch added to -mm tree

[akpm]

The patch titled
     pps: locking scheme fix up for PPS_GETPARAMS
has been added to the -mm tree.  Its filename is
     pps-locking-scheme-fix-up-for-pps_getparams.patch

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------------------------------------------------------
Subject: pps: locking scheme fix up for PPS_GETPARAMS
From: Rodolfo Giometti <giometti@linux.it>

-ENOCHANGELOG

Signed-off-by: Rodolfo Giometti <giometti@linux.it>
Tested-by: Reg Clemens <clemens@dwf.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


diff -puN drivers/pps/pps.c~pps-locking-scheme-fix-up-for-pps_getparams drivers/pps/pps.c
--- a/drivers/pps/pps.c~pps-locking-scheme-fix-up-for-pps_getparams
+++ a/drivers/pps/pps.c
@@ -71,9 +71,14 @@ static long pps_cdev_ioctl(struct file *
 	case PPS_GETPARAMS:
 		pr_debug("PPS_GETPARAMS: source %d\n", pps->id);
 
-		/* Return current parameters */
-		err = copy_to_user(uarg, &pps->params,
-						sizeof(struct pps_kparams));
+		spin_lock_irq(&pps->lock);
+
+		/* Get the current parameters */
+		params = pps->params;
+
+		spin_unlock_irq(&pps->lock);
+
+		err = copy_to_user(uarg, &params, sizeof(struct pps_kparams));
 		if (err)
 			return -EFAULT;
 
_

Patches currently in -mm which might be from giometti@linux.it are

linux-next.patch
pps-locking-scheme-fix-up-for-pps_getparams.patch