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authorBoris Brezillon <boris.brezillon@free-electrons.com>2017-07-17 21:20:08 +0300
committerBoris Brezillon <boris.brezillon@free-electrons.com>2017-07-19 23:04:13 +0300
commit3aa0907675a38498d8f2d343e94207ad28a117cf (patch)
tree9c7694c5d92e7a4aef14e140774ec151600338c9 /drivers/mtd
parent5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff)
downloadlinux-3aa0907675a38498d8f2d343e94207ad28a117cf.tar.xz
mtd: nand: atmel: Fix DT backward compatibility in pmecc.c
PMECC caps extraction from old DT bindings is broken, thus leading to erroneous EL registers offset, which in turn make HW ECC unusable on sama5d2 when old bindings are in use. Passing the NAND dev node instead of the NFC node to of_match_node() solves the problem. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver") Cc: <stable@vger.kernel.org> Tested-by: Romain Izard <romain.izard.pro@gmail.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/atmel/pmecc.c21
1 files changed, 6 insertions, 15 deletions
diff --git a/drivers/mtd/nand/atmel/pmecc.c b/drivers/mtd/nand/atmel/pmecc.c
index 55a8ee5306ea..8c210a5776bc 100644
--- a/drivers/mtd/nand/atmel/pmecc.c
+++ b/drivers/mtd/nand/atmel/pmecc.c
@@ -945,6 +945,7 @@ struct atmel_pmecc *devm_atmel_pmecc_get(struct device *userdev)
*/
struct platform_device *pdev = to_platform_device(userdev);
const struct atmel_pmecc_caps *caps;
+ const struct of_device_id *match;
/* No PMECC engine available. */
if (!of_property_read_bool(userdev->of_node,
@@ -953,21 +954,11 @@ struct atmel_pmecc *devm_atmel_pmecc_get(struct device *userdev)
caps = &at91sam9g45_caps;
- /*
- * Try to find the NFC subnode and extract the associated caps
- * from there.
- */
- np = of_find_compatible_node(userdev->of_node, NULL,
- "atmel,sama5d3-nfc");
- if (np) {
- const struct of_device_id *match;
-
- match = of_match_node(atmel_pmecc_legacy_match, np);
- if (match && match->data)
- caps = match->data;
-
- of_node_put(np);
- }
+ /* Find the caps associated to the NAND dev node. */
+ match = of_match_node(atmel_pmecc_legacy_match,
+ userdev->of_node);
+ if (match && match->data)
+ caps = match->data;
pmecc = atmel_pmecc_create(pdev, caps, 1, 2);
}