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usb: ehci: mv_ehci: remove unused clock

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The origianl understanding of clock is wrong. The EHCI controller
only have one clock input.
Passing clock name by pdata is wrong. The clock is defined by device
iteself.

Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Chao Xie 2013-03-25 03:06:54 -04:00 committed by Felipe Balbi
parent df18fedae5
commit b7e159c295
1 changed files with 10 additions and 25 deletions
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35
drivers/usb/host/ehci-mv.c
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@ -33,25 +33,17 @@ struct ehci_hcd_mv {
struct mv_usb_platform_data *pdata;
/* clock source and total clock number */
unsigned int clknum;
struct clk *clk[0];
struct clk *clk;
};
static void ehci_clock_enable(struct ehci_hcd_mv *ehci_mv)
{
unsigned int i;
for (i = 0; i < ehci_mv->clknum; i++)
clk_prepare_enable(ehci_mv->clk[i]);
clk_prepare_enable(ehci_mv->clk);
}
static void ehci_clock_disable(struct ehci_hcd_mv *ehci_mv)
{
unsigned int i;
for (i = 0; i < ehci_mv->clknum; i++)
clk_disable_unprepare(ehci_mv->clk[i]);
clk_disable_unprepare(ehci_mv->clk);
}
static int mv_ehci_enable(struct ehci_hcd_mv *ehci_mv)
@ -144,9 +136,8 @@ static int mv_ehci_probe(struct platform_device *pdev)
struct ehci_hcd *ehci;
struct ehci_hcd_mv *ehci_mv;
struct resource *r;
int clk_i, retval = -ENODEV;
int retval = -ENODEV;
u32 offset;
size_t size;
if (!pdata) {
dev_err(&pdev->dev, "missing platform_data\n");
@ -160,8 +151,7 @@ static int mv_ehci_probe(struct platform_device *pdev)
if (!hcd)
return -ENOMEM;
size = sizeof(*ehci_mv) + sizeof(struct clk *) * pdata->clknum;
ehci_mv = devm_kzalloc(&pdev->dev, size, GFP_KERNEL);
ehci_mv = devm_kzalloc(&pdev->dev, sizeof(*ehci_mv), GFP_KERNEL);
if (ehci_mv == NULL) {
dev_err(&pdev->dev, "cannot allocate ehci_hcd_mv\n");
retval = -ENOMEM;
@ -172,16 +162,11 @@ static int mv_ehci_probe(struct platform_device *pdev)
ehci_mv->pdata = pdata;
ehci_mv->hcd = hcd;
ehci_mv->clknum = pdata->clknum;
for (clk_i = 0; clk_i < ehci_mv->clknum; clk_i++) {
ehci_mv->clk[clk_i] =
devm_clk_get(&pdev->dev, pdata->clkname[clk_i]);
if (IS_ERR(ehci_mv->clk[clk_i])) {
dev_err(&pdev->dev, "error get clck \"%s\"\n",
pdata->clkname[clk_i]);
retval = PTR_ERR(ehci_mv->clk[clk_i]);
goto err_clear_drvdata;
}
ehci_mv->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(ehci_mv->clk)) {
dev_err(&pdev->dev, "error getting clock\n");
retval = PTR_ERR(ehci_mv->clk);
goto err_clear_drvdata;
}
r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phyregs");