This is a note to let you know that I've just added the patch titled
mtd: nand: gpmi: Fix gpmi_nand_init() error path
to the 4.4-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-gpmi-fix-gpmi_nand_init-error-path.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Apr 10 10:31:53 CEST 2018
From: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Date: Mon, 10 Apr 2017 10:35:17 +0200
Subject: mtd: nand: gpmi: Fix gpmi_nand_init() error path
From: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
[ Upstream commit 4d02423e9afe6c46142ce98bbcaf5167316dbfbf ]
The GPMI driver is wrongly assuming that nand_release() can safely be
called on an uninitialized/unregistered NAND device.
Add a new err_nand_cleanup label in the error path and only execute if
nand_scan_tail() succeeded.
Note that we now call nand_cleanup() instead of nand_release()
(nand_release() is actually grouping the mtd_device_unregister() and
nand_cleanup() in one call) because there's no point in trying to
unregister a device that has never been registered.
Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Marek Vasut <marek.vasut@xxxxxxxxx>
Acked-by: Han Xu <han.xu@xxxxxxx>
Reviewed-by: Marek Vasut <marek.vasut@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -1949,19 +1949,21 @@ static int gpmi_nand_init(struct gpmi_na
ret = nand_boot_init(this);
if (ret)
- goto err_out;
+ goto err_nand_cleanup;
ret = chip->scan_bbt(mtd);
if (ret)
- goto err_out;
+ goto err_nand_cleanup;
ppdata.of_node = this->pdev->dev.of_node;
ret = mtd_device_parse_register(mtd, NULL, &ppdata, NULL, 0);
if (ret)
- goto err_out;
+ goto err_nand_cleanup;
return 0;
+err_nand_cleanup:
+ nand_cleanup(chip);
err_out:
- gpmi_nand_exit(this);
+ gpmi_free_dma_buffer(this);
return ret;
}
Patches currently in stable-queue which might be from boris.brezillon@xxxxxxxxxxxxxxxxxx are
queue-4.4/mtd-nand-gpmi-fix-gpmi_nand_init-error-path.patch