From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 3 Nov 2015 14:00:57 +0000 (+0100)
Subject: dmaengine: edma: fix build without CONFIG_OF
X-Git-Tag: firefly_0821_release~176^2~664^2~4
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=638bdc8ce845285e1112f4870aded1638187fc98;p=firefly-linux-kernel-4.4.55.git

dmaengine: edma: fix build without CONFIG_OF

During the edma rework, a build error was introduced for the
case that CONFIG_OF is disabled:

drivers/built-in.o: In function `edma_tc_set_pm_state':
:(.text+0x43bf0): undefined reference to `of_find_device_by_node'

As the edma_tc_set_pm_state() function does nothing in case
we are running without OF, this adds an IS_ENABLED() check
that turns the function into an empty stub then and avoids the
link error.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: ca304fa9bb76 ("ARM/dmaengine: edma: Public API to use private struct pointer")
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
index 6b03e4e84e6b..c69d22c0b9ba 100644
--- a/drivers/dma/edma.c
+++ b/drivers/dma/edma.c
@@ -1565,7 +1565,7 @@ static void edma_tc_set_pm_state(struct edma_tc *tc, bool enable)
 	struct platform_device *tc_pdev;
 	int ret;
 
-	if (!tc)
+	if (!IS_ENABLED(CONFIG_OF) || !tc)
 		return;
 
 	tc_pdev = of_find_device_by_node(tc->node);