[U-Boot] [PATCH] spi: Fix manual relocation calling more times

[Michal Simek]

From: Ashok Reddy Soma <ashok.reddy.soma at xilinx.com>

When two instances of AXI QSPI with flash are added and tested
simultaneously the spi driver operations are relocated twice.
As a result code is accessing addresses outside of RAM when
relocated second time which is causing a crash.

Tested on Microblaze.

Similar change was done in past by:
commit f238b3f0fbc9 ("watchdog: dm: Support manual relocation for watchdogs")
commit 2588f2ddfd60 ("dm: sf: Add support for all targets which requires MANUAL_RELOC")
commit 1b4c2aa25bdf ("gpio: dm: Support manual relocation for gpio")

Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma at xilinx.com>
Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 drivers/spi/spi-uclass.c | 34 +++++++++++++++++++---------------
 1 file changed, 19 insertions(+), 15 deletions(-)

diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index 88cb2a126227..6d63006d186c 100644
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -129,21 +129,25 @@ static int spi_post_probe(struct udevice *bus)
 #endif
 #if defined(CONFIG_NEEDS_MANUAL_RELOC)
 	struct dm_spi_ops *ops = spi_get_ops(bus);
-
-	if (ops->claim_bus)
-		ops->claim_bus += gd->reloc_off;
-	if (ops->release_bus)
-		ops->release_bus += gd->reloc_off;
-	if (ops->set_wordlen)
-		ops->set_wordlen += gd->reloc_off;
-	if (ops->xfer)
-		ops->xfer += gd->reloc_off;
-	if (ops->set_speed)
-		ops->set_speed += gd->reloc_off;
-	if (ops->set_mode)
-		ops->set_mode += gd->reloc_off;
-	if (ops->cs_info)
-		ops->cs_info += gd->reloc_off;
+	static int reloc_done;
+
+	if (!reloc_done) {
+		if (ops->claim_bus)
+			ops->claim_bus += gd->reloc_off;
+		if (ops->release_bus)
+			ops->release_bus += gd->reloc_off;
+		if (ops->set_wordlen)
+			ops->set_wordlen += gd->reloc_off;
+		if (ops->xfer)
+			ops->xfer += gd->reloc_off;
+		if (ops->set_speed)
+			ops->set_speed += gd->reloc_off;
+		if (ops->set_mode)
+			ops->set_mode += gd->reloc_off;
+		if (ops->cs_info)
+			ops->cs_info += gd->reloc_off;
+		reloc_done++;
+	}
 #endif
 
 	return 0;
-- 
2.17.1