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Commit 2e0e0777 authored by Ben Dooks's avatar Ben Dooks Committed by Greg Kroah-Hartman
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USB: s3c-hsotg: SoftDisconnect minimum 3ms 



The shortest period SoftDisconnect can be asserted for is 3 milliseconds
according to the V210 datasheet, so ensure that we add an msleep() to
the registration code to enforce this.

Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0f002d20

drivers/usb/gadget/s3c-hsotg.c

+3 −0
Original line number Original line Diff line number Diff line
@@ -2599,6 +2599,9 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) 
	writel(S3C_DCTL_CGOUTNak | S3C_DCTL_CGNPInNAK,

	writel(S3C_DCTL_CGOUTNak | S3C_DCTL_CGNPInNAK,

	       hsotg->regs + S3C_DCTL);

	       hsotg->regs + S3C_DCTL);





	/* must be at-least 3ms to allow bus to see disconnect */

	msleep(3);



	/* remove the soft-disconnect and let's go */

	/* remove the soft-disconnect and let's go */

	__bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon);

	__bic32(hsotg->regs + S3C_DCTL, S3C_DCTL_SftDiscon);