Patch "mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow" has been added to the 4.12-stable tree

Patch "mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow" has been added to the 4.12-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow

to the 4.12-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     mtd-nand-declare-tbers-tr-and-tprog-as-u64-to-avoid-integer-overflow.patch
and it can be found in the queue-4.12 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 6d29231000bbe0fb9e4893a9c68151ffdd3b5469 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Mon, 31 Jul 2017 10:31:27 +0200
Subject: mtd: nand: Declare tBERS, tR and tPROG as u64 to avoid integer overflow

From: Boris Brezillon <boris.brezillon@free-electrons.com>

commit 6d29231000bbe0fb9e4893a9c68151ffdd3b5469 upstream.

All timings in nand_sdr_timings are expressed in picoseconds but some
of them may not fit in an u32.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Fixes: 204e7ecd47e2 ("mtd: nand: Add a few more timings to nand_sdr_timings")
Reported-by: Alexander Dahl <ada@thorsis.com>
Reviewed-by: Alexander Dahl <ada@thorsis.com>
Tested-by: Alexander Dahl <ada@thorsis.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/mtd/nand/nand_timings.c |    6 +++---
 include/linux/mtd/nand.h        |    6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

--- a/drivers/mtd/nand/nand_timings.c
+++ b/drivers/mtd/nand/nand_timings.c
@@ -311,9 +311,9 @@ int onfi_init_data_interface(struct nand
 		struct nand_sdr_timings *timings = &iface->timings.sdr;
 
 		/* microseconds -> picoseconds */
-		timings->tPROG_max = 1000000UL * le16_to_cpu(params->t_prog);
-		timings->tBERS_max = 1000000UL * le16_to_cpu(params->t_bers);
-		timings->tR_max = 1000000UL * le16_to_cpu(params->t_r);
+		timings->tPROG_max = 1000000ULL * le16_to_cpu(params->t_prog);
+		timings->tBERS_max = 1000000ULL * le16_to_cpu(params->t_bers);
+		timings->tR_max = 1000000ULL * le16_to_cpu(params->t_r);
 
 		/* nanoseconds -> picoseconds */
 		timings->tCCS_min = 1000UL * le16_to_cpu(params->t_ccs);
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -638,10 +638,10 @@ struct nand_buffers {
  * @tWW_min: WP# transition to WE# low
  */
 struct nand_sdr_timings {
-	u32 tBERS_max;
+	u64 tBERS_max;
 	u32 tCCS_min;
-	u32 tPROG_max;
-	u32 tR_max;
+	u64 tPROG_max;
+	u64 tR_max;
 	u32 tALH_min;
 	u32 tADL_min;
 	u32 tALS_min;


Patches currently in stable-queue which might be from boris.brezillon@free-electrons.com are

queue-4.12/mtd-nand-atmel-fix-dt-backward-compatibility-in-pmecc.c.patch
queue-4.12/mtd-nand-fix-timing-setup-for-nands-that-do-not-support-set-features.patch
queue-4.12/mtd-nand-declare-tbers-tr-and-tprog-as-u64-to-avoid-integer-overflow.patch
queue-4.12/nand-fix-wrong-default-oob-layout-for-small-pages-using-soft-ecc.patch