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author | Gregory CLEMENT <gregory.clement@bootlin.com> | 2018-07-18 18:10:52 +0200 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2018-07-28 22:12:55 -0700 |
commit | 965cbbec7f207fef969d268fdabbcb779ec294ab (patch) | |
tree | 88ff14d888bcfc46c8ab6eb1e3c5aa22c67957e2 /drivers/net/ethernet/marvell/mvneta_bm.c | |
parent | net: mvneta: fix mtu change on port without link (diff) | |
download | linux-dev-965cbbec7f207fef969d268fdabbcb779ec294ab.tar.xz linux-dev-965cbbec7f207fef969d268fdabbcb779ec294ab.zip |
net: mvneta: remove data pointer usage from device_node structure
On year ago Rob Herring wanted to remove the data pointer from the
device_node structure[1]. The mvneta driver seemed to be the only one
which used (abused ?) it. However, the proposal of Rob to remove this
pointer from the driver introduced a regression, and I tested and fixed an
alternative way, but it was never submitted as a proper patch.
Now here it is: Instead of using the device_node structure ->data
pointer, we store the BM private data as the driver data of the BM
platform_device. The core mvneta code can retrieve it by doing a lookup
on which platform_device corresponds to the BM device tree node using
of_find_device_by_node(), and get its driver data
[1]https://www.spinics.net/lists/netdev/msg445197.html
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/marvell/mvneta_bm.c')
-rw-r--r-- | drivers/net/ethernet/marvell/mvneta_bm.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta_bm.c b/drivers/net/ethernet/marvell/mvneta_bm.c index 466939f8f0cf..de468e1bdba9 100644 --- a/drivers/net/ethernet/marvell/mvneta_bm.c +++ b/drivers/net/ethernet/marvell/mvneta_bm.c @@ -18,6 +18,7 @@ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/of.h> +#include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/skbuff.h> #include <net/hwbm.h> @@ -392,6 +393,20 @@ static void mvneta_bm_put_sram(struct mvneta_bm *priv) MVNETA_BM_BPPI_SIZE); } +struct mvneta_bm *mvneta_bm_get(struct device_node *node) +{ + struct platform_device *pdev = of_find_device_by_node(node); + + return pdev ? platform_get_drvdata(pdev) : NULL; +} +EXPORT_SYMBOL_GPL(mvneta_bm_get); + +void mvneta_bm_put(struct mvneta_bm *priv) +{ + platform_device_put(priv->pdev); +} +EXPORT_SYMBOL_GPL(mvneta_bm_put); + static int mvneta_bm_probe(struct platform_device *pdev) { struct device_node *dn = pdev->dev.of_node; |