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usb: chipidea: ci_hdrc_imx: fix potential error pointer dereference in probe

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commit d4d2e5329ae9dfd6742c84d79f7d143d10410f1b upstream.

If the first call to devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0)
fails with something other than -ENODEV then it leads to an error
pointer dereference.  For those errors we should just jump directly to
the error handling.

Fixes: 8253a34bfae3 ("usb: chipidea: ci_hdrc_imx: Also search for 'phys' phandle")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211117074923.GF5237@kili
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter
2021-11-17 10:49:23 +03:00
committed by Greg Kroah-Hartman
parent b70ff391de
commit 56fbab4937
1 changed files with 9 additions and 9 deletions
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18
drivers/usb/chipidea/ci_hdrc_imx.c
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@@ -425,15 +425,15 @@ static int ci_hdrc_imx_probe(struct platform_device *pdev)
data->phy = devm_usb_get_phy_by_phandle(dev, "fsl,usbphy", 0);
if (IS_ERR(data->phy)) {
ret = PTR_ERR(data->phy);
if (ret == -ENODEV) {
data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0);
if (IS_ERR(data->phy)) {
ret = PTR_ERR(data->phy);
if (ret == -ENODEV)
data->phy = NULL;
else
goto err_clk;
}
if (ret != -ENODEV)
goto err_clk;
data->phy = devm_usb_get_phy_by_phandle(dev, "phys", 0);
if (IS_ERR(data->phy)) {
ret = PTR_ERR(data->phy);
if (ret == -ENODEV)
data->phy = NULL;
else
goto err_clk;
}
}