[PATCH AUTOSEL for 4.9 119/219] EDAC, altera: Fix peripheral warnings for Cyclone5

[Sasha Levin]

From: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>

[ Upstream commit 25b223ddfe2a557307c05fe673e09d94ae950877 ]

The peripherals' RAS functionality only exist on the Arria10 SoCFPGA.
The Cyclone5 initialization generates EDAC warnings when the peripherals
aren't found in the device tree. Fix by checking for Arria10 in the init
functions.

Signed-off-by: Thor Thayer <thor.thayer@xxxxxxxxxxxxxxx>
Cc: linux-edac <linux-edac@xxxxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1491415262-5018-1-git-send-email-thor.thayer@xxxxxxxxxxxxxxx
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
---
 drivers/edac/altera_edac.c | 22 ++++++++++++++++++----
 1 file changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/edac/altera_edac.c b/drivers/edac/altera_edac.c
index 58d3e2b39b5b..61262a7a5c3a 100644
--- a/drivers/edac/altera_edac.c
+++ b/drivers/edac/altera_edac.c
@@ -1020,13 +1020,23 @@ out:
 	return ret;
 }
 
+static int socfpga_is_a10(void)
+{
+	return of_machine_is_compatible("altr,socfpga-arria10");
+}
+
 static int validate_parent_available(struct device_node *np);
 static const struct of_device_id altr_edac_a10_device_of_match[];
 static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
 {
 	int irq;
-	struct device_node *child, *np = of_find_compatible_node(NULL, NULL,
-					"altr,socfpga-a10-ecc-manager");
+	struct device_node *child, *np;
+
+	if (!socfpga_is_a10())
+		return -ENODEV;
+
+	np = of_find_compatible_node(NULL, NULL,
+				     "altr,socfpga-a10-ecc-manager");
 	if (!np) {
 		edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n");
 		return -ENODEV;
@@ -1542,8 +1552,12 @@ static const struct edac_device_prv_data a10_sdmmceccb_data = {
 static int __init socfpga_init_sdmmc_ecc(void)
 {
 	int rc = -ENODEV;
-	struct device_node *child = of_find_compatible_node(NULL, NULL,
-						"altr,socfpga-sdmmc-ecc");
+	struct device_node *child;
+
+	if (!socfpga_is_a10())
+		return -ENODEV;
+
+	child = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc");
 	if (!child) {
 		edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n");
 		return -ENODEV;
-- 
2.14.1