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usb: chipidea: usbmisc: fix a potential race condition

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This fixes a potential race condition where the ci13xxx_imx glue code
could be fast enough to call one of the usbmisc_ops before he got a
valid value on the static usbmisc pointer. To fix that we first set
usbmisc, then call usbmisc_set_ops().

Signed-off-by: Marc Kleine-Budde <[email protected]>
Signed-off-by: Michael Grzeschik <[email protected]>
Signed-off-by: Alexander Shishkin <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Marc Kleine-Budde 2013-03-30 12:53:58 +02:00 • committed by Greg Kroah-Hartman
commit 00b9a1f97d
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/chipidea/usbmisc_imx.c
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@ -116,14 +116,14 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
return ret;
}
usbmisc = data;
ret = usbmisc_set_ops(&imx6q_usbmisc_ops);
if (ret) {
usbmisc = NULL;
clk_disable_unprepare(data->clk);
return ret;
}
usbmisc = data;
return 0;
}