From: Marek Vasut <marex@denx.de>
Date: Sun, 16 Sep 2012 16:54:22 +0000 (+0200)
Subject: serial: Enhance the manual relocation
X-Git-Tag: v2013.01-rc1~277
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=f2760c4acd5b7a198632d002528ec7c227ea27b8;p=u-boot

serial: Enhance the manual relocation

Enhance the manual relocation of drivers operations structure by
checking if the entries are NULL and increment them only if they
are not. This allows for setting any entry to NULL and it will
survive the manual relocation.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Marek Vasut <marek.vasut@gmail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stefan Roese <sr@denx.de>
---

diff --git a/drivers/serial/serial.c b/drivers/serial/serial.c
index acb74af963..5bbf3aeb44 100644
--- a/drivers/serial/serial.c
+++ b/drivers/serial/serial.c
@@ -97,12 +97,20 @@ serial_initfunc(sh_serial_initialize);
 void serial_register(struct serial_device *dev)
 {
 #ifdef CONFIG_NEEDS_MANUAL_RELOC
-	dev->start += gd->reloc_off;
-	dev->setbrg += gd->reloc_off;
-	dev->getc += gd->reloc_off;
-	dev->tstc += gd->reloc_off;
-	dev->putc += gd->reloc_off;
-	dev->puts += gd->reloc_off;
+	if (dev->start)
+		dev->start += gd->reloc_off;
+	if (dev->stop)
+		dev->stop += gd->reloc_off;
+	if (dev->setbrg)
+		dev->setbrg += gd->reloc_off;
+	if (dev->getc)
+		dev->getc += gd->reloc_off;
+	if (dev->tstc)
+		dev->tstc += gd->reloc_off;
+	if (dev->putc)
+		dev->putc += gd->reloc_off;
+	if (dev->puts)
+		dev->puts += gd->reloc_off;
 #endif
 
 	dev->next = serial_devices;