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usb: ehci-sh: fix illegal phy_init() running when platform_data is NULL 

If the platform_data is not set, pdata will be uninitialized value.
Since the driver has the following code, if the condition is true when
the pdata is uninitialized value, the driver may jump to the illegal
phy_init().

	if (pdata && pdata->phy_init)
		pdata->phy_init();

This patch also fixes the following warning:

  CC      drivers/usb/host/ehci-hcd.o
drivers/usb/host/ehci-sh.c: In function ‘ehci_hcd_sh_probe’:
drivers/usb/host/ehci-sh.c:104: warning: ‘pdata’ may be used uninitialized in this function

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shimoda, Yoshihiro 2012-06-12 09:34:33 +09:00 committed by Greg Kroah-Hartman
parent 6c4707f3f8
commit 5897b03829
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/host/ehci-sh.c
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@ -126,8 +126,7 @@ static int ehci_hcd_sh_probe(struct platform_device *pdev)
goto fail_create_hcd; goto fail_create_hcd;
} }
if (pdev->dev.platform_data != NULL) pdata = pdev->dev.platform_data;
pdata = pdev->dev.platform_data;
/* initialize hcd */ /* initialize hcd */
hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev, hcd = usb_create_hcd(&ehci_sh_hc_driver, &pdev->dev,