[PATCH v4 1/5] net: ethernet: cpsw: switch to devres allocations
From: Sergei Shtylyov <hidden>
Date: 2013-08-23 18:10:54
Also in:
linux-omap, netdev
On 08/23/2013 06:16 PM, Daniel Mack wrote:
This patch cleans up the allocation and error unwind paths, which allows us to carry less information in struct cpsw_priv and reduce the amount of jump labels in the probe functions.
Signed-off-by: Daniel Mack <zonque@gmail.com> --- drivers/net/ethernet/ti/cpsw.c | 147 +++++++++++++---------------------------- 1 file changed, 45 insertions(+), 102 deletions(-)
quoted hunk ↗ jump to hunk
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index 79974e3..849af52 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c
[...]
quoted hunk ↗ jump to hunk
@@ -1977,55 +1963,41 @@ static int cpsw_probe(struct platform_device *pdev) priv->slaves[0].ndev = ndev; priv->emac_port = 0; - priv->clk = clk_get(&pdev->dev, "fck"); + priv->clk = devm_clk_get(&pdev->dev, "fck"); if (IS_ERR(priv->clk)) { - dev_err(&pdev->dev, "fck is not found\n"); + dev_err(priv->dev, "fck is not found\n"); ret = -ENODEV; - goto clean_slave_ret; + goto clean_runtime_disable_ret; } priv->coal_intvl = 0; priv->bus_freq_mhz = clk_get_rate(priv->clk) / 1000000; - priv->cpsw_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!priv->cpsw_res) { + ss_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!ss_res) {
You don't need to check the result of platform_get_resource() if you call
devm_ioremap_resource() right afterwards -- it will check resource ptr for
NULL the first thing. :-)
dev_err(priv->dev, "error getting i/o resource\n");
ret = -ENOENT;
- goto clean_clk_ret;
+ goto clean_runtime_disable_ret;
}
- if (!request_mem_region(priv->cpsw_res->start,
- resource_size(priv->cpsw_res), ndev->name)) {
- dev_err(priv->dev, "failed request i/o region\n");
- ret = -ENXIO;
- goto clean_clk_ret;
- }
- ss_regs = ioremap(priv->cpsw_res->start, resource_size(priv->cpsw_res));
- if (!ss_regs) {
+ ss_regs = devm_ioremap_resource(&pdev->dev, ss_res);
+ if (IS_ERR(ss_regs)) {
dev_err(priv->dev, "unable to map i/o region\n");
Don't need the error message anymore -- devm_ioremap_resource() will print
it. And you missed:
ret = PTR_ERR(ss_regs);
- goto clean_cpsw_iores_ret;
+ goto clean_runtime_disable_ret;
}
priv->regs = ss_regs;
priv->version = __raw_readl(&priv->regs->id_ver);
priv->host_port = HOST_PORT_NUM;
- priv->cpsw_wr_res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- if (!priv->cpsw_wr_res) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res) {
Same comment about resource check here...
dev_err(priv->dev, "error getting i/o resource\n");
ret = -ENOENT;
- goto clean_iomap_ret;
- }
- if (!request_mem_region(priv->cpsw_wr_res->start,
- resource_size(priv->cpsw_wr_res), ndev->name)) {
- dev_err(priv->dev, "failed request i/o region\n");
- ret = -ENXIO;
- goto clean_iomap_ret;
+ goto clean_runtime_disable_ret;
}
- wr_regs = ioremap(priv->cpsw_wr_res->start,
- resource_size(priv->cpsw_wr_res));
- if (!wr_regs) {
+ priv->wr_regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(priv->wr_regs)) {
dev_err(priv->dev, "unable to map i/o region\n");
And same comments about the unneeded error message and missing 'ret'
assignment here...
- goto clean_cpsw_wr_iores_ret; + goto clean_runtime_disable_ret; } - priv->wr_regs = wr_regs; memset(&dma_params, 0, sizeof(dma_params)); memset(&ale_params, 0, sizeof(ale_params));
[...] WBR, Sergei