linux-kernel - [PATCH 5.8 67/99] spi: bcm-qspi: Fix probe regression on iProc platforms

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Date:   Tue, 29 Sep 2020 13:01:50 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ray Jui <ray.jui@...adcom.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.8 67/99] spi: bcm-qspi: Fix probe regression on iProc platforms

From: Ray Jui <ray.jui@...adcom.com>

[ Upstream commit 00fb259c618ea1198fc51b53a6167aa0d78672a9 ]

iProc chips have QSPI controller that does not have the MSPI_REV
offset. Reading from that offset will cause a bus error. Fix it by
having MSPI_REV query disabled in the generic compatible string.

Fixes: 3a01f04d74ef ("spi: bcm-qspi: Handle lack of MSPI_REV offset")
Link: https://lore.kernel.org/linux-arm-kernel/20200909211857.4144718-1-f.fainelli@gmail.com/T/#u
Signed-off-by: Ray Jui <ray.jui@...adcom.com>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
Link: https://lore.kernel.org/r/20200910152539.45584-3-ray.jui@broadcom.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-bcm-qspi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-bcm-qspi.c b/drivers/spi/spi-bcm-qspi.c
index 681d090851756..9cfa15ec8b08c 100644
--- a/drivers/spi/spi-bcm-qspi.c
+++ b/drivers/spi/spi-bcm-qspi.c
@@ -1295,7 +1295,7 @@ static const struct of_device_id bcm_qspi_of_match[] = {
 	},
 	{
 		.compatible = "brcm,spi-bcm-qspi",
-		.data = &bcm_qspi_rev_data,
+		.data = &bcm_qspi_no_rev_data,
 	},
 	{
 		.compatible = "brcm,spi-bcm7216-qspi",
-- 
2.25.1