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Commit 3b5d3e68 authored by Chris Ruehl's avatar Chris Ruehl Committed by Greg Kroah-Hartman
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usb: chipidea: Fix Internal error: : 808 [#1] ARM related to STS flag 



* init the sts flag to 0 (missed)
* fix write the real bit not sts value
* Set PORTCS_STS and DEVLC_STS only if sts = 1

[Peter Chen: This one and the next patch fix the problem occurred imx27
and imx31, and imx27 and imx31 usb support are enabled until 3.14, so
these two patches isn't needed for -stable]

Signed-off-by: default avatarChris Ruehl <chris.ruehl@gtsys.com.hk>
Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 1071055e

drivers/usb/chipidea/core.c

+5 −3
Original line number Diff line number Diff line
@@ -236,7 +236,7 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base) 


static void hw_phymode_configure(struct ci_hdrc *ci)

{

	u32 portsc, lpm, sts;

	u32 portsc, lpm, sts = 0;



	switch (ci->platdata->phy_mode) {

	case USBPHY_INTERFACE_MODE_UTMI:
@@ -266,10 +266,12 @@ static void hw_phymode_configure(struct ci_hdrc *ci) 


	if (ci->hw_bank.lpm) {

		hw_write(ci, OP_DEVLC, DEVLC_PTS(7) | DEVLC_PTW, lpm);

		hw_write(ci, OP_DEVLC, DEVLC_STS, sts);

		if (sts)

			hw_write(ci, OP_DEVLC, DEVLC_STS, DEVLC_STS);

	} else {

		hw_write(ci, OP_PORTSC, PORTSC_PTS(7) | PORTSC_PTW, portsc);

		hw_write(ci, OP_PORTSC, PORTSC_STS, sts);

		if (sts)

			hw_write(ci, OP_PORTSC, PORTSC_STS, PORTSC_STS);

	}

}