This is a note to let you know that I've just added the patch titled
usb: musb: fix PHY power on/off
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 3063a12be2b07c64e9802708a19489342e64c1a3 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <[email protected]>
Date: Fri, 28 Mar 2014 14:31:47 -0500
Subject: usb: musb: fix PHY power on/off
MIME-Version: 1.0
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Content-Transfer-Encoding: 8bit
commi 30a70b0 (usb: musb: fix obex in g_nokia.ko
causing kernel panic) removed phy_power_on()
and phy_power_off() calls from runtime PM callbacks
but it failed to note that the driver depended
on pm_runtime_get_sync() calls to power up the PHY,
thus leaving some platforms without any means to
have a working PHY.
Fix that by enabling the phy during omap2430_musb_init()
and killing it in omap2430_musb_exit().
Fixes: 30a70b0 (usb: musb: fix obex in g_nokia.ko causing kernel panic)
Cc: <[email protected]> # v3.14
Cc: Pali Rohár <[email protected]>
Cc: Ivaylo Dimitrov <[email protected]>
Reported-by: Michael Scott <[email protected]>
Tested-by: Michael Scott <[email protected]>
Tested-by: Stefan Roese <[email protected]>
Reported-by: Rabin Vincent <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
---
drivers/usb/musb/omap2430.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/musb/omap2430.c b/drivers/usb/musb/omap2430.c
index d341c149a2f9..819a7cdcb866 100644
--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -416,6 +416,7 @@ static int omap2430_musb_init(struct musb *musb)
omap_musb_set_mailbox(glue);
phy_init(musb->phy);
+ phy_power_on(musb->phy);
pm_runtime_put_noidle(musb->controller);
return 0;
@@ -478,6 +479,7 @@ static int omap2430_musb_exit(struct musb *musb)
del_timer_sync(&musb_idle_timer);
omap2430_low_level_exit(musb);
+ phy_power_off(musb->phy);
phy_exit(musb->phy);
return 0;
--
1.9.0
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