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From: Colin King <colin.king@canonical.com>
To: Vinod Koul <vkoul@kernel.org>, dmaengine@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] dmaengine: sh: make array descs static
Date: Wed, 15 Sep 2021 12:19:51 +0100	[thread overview]
Message-ID: <20210915111951.12326-1-colin.king@canonical.com> (raw)

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

Don't populate the read-only array ds_lut on the stack but instead it
static. Also makes the object code smaller by 163 bytes:

Before:
   text    data     bss     dec     hex filename
  23508    4796       0   28304    6e90 ./drivers/dma/sh/rz-dmac.o

After:
   text    data     bss     dec     hex filename
  23281    4860       0   28141    6ded ./drivers/dma/sh/rz-dmac.o

(gcc version 11.2.0)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/dma/sh/rz-dmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/sh/rz-dmac.c b/drivers/dma/sh/rz-dmac.c
index f9f30cbeccbe..005f1a3ff634 100644
--- a/drivers/dma/sh/rz-dmac.c
+++ b/drivers/dma/sh/rz-dmac.c
@@ -573,7 +573,7 @@ static void rz_dmac_issue_pending(struct dma_chan *chan)
 static u8 rz_dmac_ds_to_val_mapping(enum dma_slave_buswidth ds)
 {
 	u8 i;
-	const enum dma_slave_buswidth ds_lut[] = {
+	static const enum dma_slave_buswidth ds_lut[] = {
 		DMA_SLAVE_BUSWIDTH_1_BYTE,
 		DMA_SLAVE_BUSWIDTH_2_BYTES,
 		DMA_SLAVE_BUSWIDTH_4_BYTES,
-- 
2.32.0


             reply	other threads:[~2021-09-15 11:19 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-15 11:19 Colin King [this message]
2021-09-15 11:20 ` Colin Ian King

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