This is a note to let you know that I've just added the patch titled
usb: musb: avoid NULL pointer dereference
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-musb-avoid-null-pointer-dereference.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From eee3f15d5f1f4f0c283dd4db67dc1b874a2852d1 Mon Sep 17 00:00:00 2001
From: Felipe Balbi <[email protected]>
Date: Tue, 25 Feb 2014 10:58:43 -0600
Subject: usb: musb: avoid NULL pointer dereference
From: Felipe Balbi <[email protected]>
commit eee3f15d5f1f4f0c283dd4db67dc1b874a2852d1 upstream.
instead of relying on the otg pointer, which
can be NULL in certain cases, we can use the
gadget and host pointers we already hold inside
struct musb.
Tested-by: Tony Lindgren <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/usb/musb/musb_core.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -440,7 +440,6 @@ void musb_hnp_stop(struct musb *musb)
static irqreturn_t musb_stage0_irq(struct musb *musb, u8 int_usb,
u8 devctl)
{
- struct usb_otg *otg = musb->xceiv->otg;
irqreturn_t handled = IRQ_NONE;
dev_dbg(musb->controller, "<== DevCtl=%02x, int_usb=0x%x\n", devctl,
@@ -655,7 +654,7 @@ static irqreturn_t musb_stage0_irq(struc
break;
case OTG_STATE_B_PERIPHERAL:
musb_g_suspend(musb);
- musb->is_active = otg->gadget->b_hnp_enable;
+ musb->is_active = musb->g.b_hnp_enable;
if (musb->is_active) {
musb->xceiv->state = OTG_STATE_B_WAIT_ACON;
dev_dbg(musb->controller, "HNP: Setting timer
for b_ase0_brst\n");
@@ -671,7 +670,7 @@ static irqreturn_t musb_stage0_irq(struc
break;
case OTG_STATE_A_HOST:
musb->xceiv->state = OTG_STATE_A_SUSPEND;
- musb->is_active = otg->host->b_hnp_enable;
+ musb->is_active = musb_to_hcd(musb)->self.b_hnp_enable;
break;
case OTG_STATE_B_HOST:
/* Transition to B_PERIPHERAL, see 6.8.2.6 p 44 */
Patches currently in stable-queue which might be from [email protected] are
queue-3.10/usb-gadget-zero-fix-superspeed-enumeration-for-alternate-setting-1.patch
queue-3.10/usb-musb-avoid-null-pointer-dereference.patch
queue-3.10/usb-dwc3-fix-wrong-bit-mask-in-dwc3_event_devt.patch
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