Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c344b518 authored by Peter Chen's avatar Peter Chen Committed by Greg Kroah-Hartman
Browse files

usb: chipidea: disable all interrupts and clear all interrupts status 



During the initialization, it needs to disable all interrupts
enable bit as well as clear all interrupts status bits to avoid
exceptional interrupt.

Tested-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarPeter Chen <peter.chen@freescale.com>
Signed-off-by: default avatarAlexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 577b232f

drivers/usb/chipidea/core.c

+10 −1
Original line number Diff line number Diff line
@@ -199,6 +199,12 @@ static int hw_device_init(struct ci_hdrc *ci, void __iomem *base) 
	if (ci->hw_ep_max > ENDPT_MAX)

		return -ENODEV;



	/* Disable all interrupts bits */

	hw_write(ci, OP_USBINTR, 0xffffffff, 0);



	/* Clear all interrupts status bits*/

	hw_write(ci, OP_USBSTS, 0xffffffff, 0xffffffff);



	dev_dbg(ci->dev, "ChipIdea HDRC found, lpm: %d; cap: %p op: %p\n",

		ci->hw_bank.lpm, ci->hw_bank.cap, ci->hw_bank.op);
@@ -434,8 +440,11 @@ static void ci_get_otg_capable(struct ci_hdrc *ci) 
		ci->is_otg = (hw_read(ci, CAP_DCCPARAMS,

				DCCPARAMS_DC | DCCPARAMS_HC)

					== (DCCPARAMS_DC | DCCPARAMS_HC));

	if (ci->is_otg)

	if (ci->is_otg) {

		dev_dbg(ci->dev, "It is OTG capable controller\n");

		ci_disable_otg_interrupt(ci, OTGSC_INT_EN_BITS);

		ci_clear_otg_interrupt(ci, OTGSC_INT_STATUS_BITS);

	}

}



static int ci_hdrc_probe(struct platform_device *pdev)