[PATCH 10/15] power: reset: at91-reset: use r4 as tmp argument

From: Claudiu.Beznea
Date: Tue Jan 21 2020 - 05:04:23 EST


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

Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx>
---
drivers/power/reset/at91-reset.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/power/reset/at91-reset.c b/drivers/power/reset/at91-reset.c
index dc48f6850796..3b1d566350f4 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;
}
--
2.7.4