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usb: musb: start session in resume for host port
Commit17539f2f4f
("usb: musb: fix enumeration after resume") replaced musb_start() in musb_resume() to not override softconnect bit, but it doesn't restart the session for host port which was done in musb_start(). The session could be disabled in musb_suspend(), which leads the host port doesn't stay in host mode. So let's start the session specifically for host port in musb_resume(). Fixes:17539f2f4f
("usb: musb: fix enumeration after resume") Cc: stable@vger.kernel.org Signed-off-by: Bin Liu <b-liu@ti.com> Link: https://lore.kernel.org/r/20200525025049.3400-3-b-liu@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2877,6 +2877,13 @@ static int musb_resume(struct device *dev)
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musb_enable_interrupts(musb);
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musb_platform_enable(musb);
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/* session might be disabled in suspend */
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if (musb->port_mode == MUSB_HOST &&
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!(musb->ops->quirks & MUSB_PRESERVE_SESSION)) {
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devctl |= MUSB_DEVCTL_SESSION;
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musb_writeb(musb->mregs, MUSB_DEVCTL, devctl);
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}
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spin_lock_irqsave(&musb->lock, flags);
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error = musb_run_resume_work(musb);
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if (error)
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