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* [PATCH] dmaengine: iop-adma: make array 'handler' static const, makes object smaller
@ 2019-09-05 16:37 Colin King
  0 siblings, 0 replies; only message in thread
From: Colin King @ 2019-09-05 16:37 UTC (permalink / raw)
  To: Dan Williams, Vinod Koul, dmaengine; +Cc: kernel-janitors, linux-kernel

From: Colin Ian King <colin.king@canonical.com>

Don't populate the array 'handler' on the stack but instead make it
static const. Makes the object code smaller by 80 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  38225	   9084	     64	  47373	   b90d	drivers/dma/iop-adma.o

After:
   text	   data	    bss	    dec	    hex	filename
  38081	   9148	     64	  47293	   b8bd	drivers/dma/iop-adma.o

(gcc version 9.2.1, amd64)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/dma/iop-adma.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index a3f942a6a946..4dc5478fc156 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -1359,9 +1359,11 @@ static int iop_adma_probe(struct platform_device *pdev)
 	iop_adma_device_clear_err_status(iop_chan);
 
 	for (i = 0; i < 3; i++) {
-		irq_handler_t handler[] = { iop_adma_eot_handler,
-					iop_adma_eoc_handler,
-					iop_adma_err_handler };
+		static const irq_handler_t handler[] = {
+			iop_adma_eot_handler,
+			iop_adma_eoc_handler,
+			iop_adma_err_handler
+		};
 		int irq = platform_get_irq(pdev, i);
 		if (irq < 0) {
 			ret = -ENXIO;
-- 
2.20.1


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2019-09-05 16:37 [PATCH] dmaengine: iop-adma: make array 'handler' static const, makes object smaller Colin King

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