From: Claudiu.Beznea@microchip.com <Claudiu.Beznea@microchip.com>
Date: Tue, 21 Jan 2020 10:03:33 +0000 (+0000)
Subject: power: reset: at91-reset: use r4 as tmp argument
X-Git-Tag: v5.7-rc1~76^2~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7cb290d3dd559dff5028b9418a31ecb99988f640;p=thirdparty%2Flinux.git

power: reset: at91-reset: use r4 as tmp argument

Use r4 as temporary register. On ARM r0-r3 should be used to hold
function arguments.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
---

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index dc48f68507968..3b1d566350f4f 100644
--- a/drivers/power/reset/at91-reset.c
+++ b/drivers/power/reset/at91-reset.c
@@ -113,8 +113,8 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
 		"beq	1f\n\t"
 
 		/* Then, test that the RAM controller is enabled */
-		"ldr	r0, [%1]\n\t"
-		"cmp	r0, #0\n\t"
+		"ldr	r4, [%1]\n\t"
+		"cmp	r4, #0\n\t"
 
 		/* Align to cache lines */
 		".balign 32\n\t"
@@ -138,7 +138,7 @@ static int at91sam9g45_restart(struct notifier_block *this, unsigned long mode,
 		  "r" (1),
 		  "r" cpu_to_le32(AT91_DDRSDRC_LPCB_POWER_DOWN),
 		  "r" (reset->args)
-		: "r0");
+		: "r4");
 
 	return NOTIFY_DONE;
 }