[PATCH RFC 1/3] dt:net:stmmac: Allocate platform data only if its NULL.
From: Srinivas KANDAGATLA <hidden>
Date: 2013-07-01 11:49:39
Also in:
linux-devicetree, lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
From: Srinivas Kandagatla <redacted> In some DT use-cases platform data might be already allocated and passed via AUXDATA. These are the cases where machine level code populates few callbacks in the platform data. This patch adds check and reuses platform_data if its valid, before allocating a new one. Signed-off-by: Srinivas Kandagatla <redacted> --- .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 1d3780f..5907920 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c@@ -92,8 +92,10 @@ static int stmmac_pltfr_probe(struct platform_device *pdev) if (IS_ERR(addr)) return PTR_ERR(addr); + plat_dat = pdev->dev.platform_data; if (pdev->dev.of_node) { - plat_dat = devm_kzalloc(&pdev->dev, + if (!plat_dat) + plat_dat = devm_kzalloc(&pdev->dev, sizeof(struct plat_stmmacenet_data), GFP_KERNEL); if (!plat_dat) {
@@ -106,8 +108,6 @@ static int stmmac_pltfr_probe(struct platform_device *pdev) pr_err("%s: main dt probe failed", __func__); return ret; } - } else { - plat_dat = pdev->dev.platform_data; } /* Custom initialisation (if needed)*/
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1.7.6.5