linux-kernel - [PATCH 11/15] dmaengine: dw: platform: use field-by-field initialization

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Message-Id: <1453663322-14474-12-git-send-email-mans@mansr.com>
Date:	Sun, 24 Jan 2016 19:21:58 +0000
From:	Mans Rullgard <mans@...sr.com>
To:	Viresh Kumar <vireshk@...nel.org>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Vinod Koul <vinod.koul@...el.com>,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org
Cc:	Dan Williams <dan.j.williams@...el.com>
Subject: [PATCH 11/15] dmaengine: dw: platform: use field-by-field initialization

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

This is a simple stylish change that allows to use less lines of code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
I'm a little ambivalent on this one.  While the patch is correct as such,
the change means that if struct dw_dma_slave gains new members in future,
these will not be initialised.  This added fragility seems an unnecesary
price to pay for saving one line of code.
---
 drivers/dma/dw/platform.c | 19 +++++++++----------
 1 file changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index 808bafdd7d48..0fd5a49311a2 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -32,14 +32,13 @@ static struct dma_chan *dw_dma_of_xlate(struct of_phandle_args *dma_spec,
 					struct of_dma *ofdma)
 {
 	struct dw_dma *dw = ofdma->of_dma_data;
-	struct dw_dma_slave slave = {
-		.dma_dev = dw->dma.dev,
-	};
+	struct dw_dma_slave slave;
 	dma_cap_mask_t cap;
 
 	if (dma_spec->args_count != 3)
 		return NULL;
 
+	slave.dma_dev = dw->dma.dev;
 	slave.src_id = dma_spec->args[0];
 	slave.dst_id = dma_spec->args[0];
 	slave.m_master = dma_spec->args[1];
@@ -62,13 +61,13 @@ static struct dma_chan *dw_dma_of_xlate(struct of_phandle_args *dma_spec,
 static bool dw_dma_acpi_filter(struct dma_chan *chan, void *param)
 {
 	struct acpi_dma_spec *dma_spec = param;
-	struct dw_dma_slave slave = {
-		.dma_dev = dma_spec->dev,
-		.src_id = dma_spec->slave_id,
-		.dst_id = dma_spec->slave_id,
-		.m_master = 1,
-		.p_master = 0,
-	};
+	struct dw_dma_slave slave;
+
+	slave.dma_dev = dma_spec->dev;
+	slave.src_id = dma_spec->slave_id;
+	slave.dst_id = dma_spec->slave_id;
+	slave.m_master = 1;
+	slave.p_master = 0;
 
 	return dw_dma_filter(chan, &slave);
 }
-- 
2.7.0