diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2022-10-26 19:26:53 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-09 12:39:13 +0100 |
| commit | a6d45ea063f0a9272f62925c8150439af5640e74 (patch) | |
| tree | a3bc834afb783a3df0ed7045b6876786131b15ee /drivers/usb/musb/musb_virthub.c | |
| parent | 285f28bfed89a56ed619054f21125b0bd2f0d4d6 (diff) | |
| download | linux-a6d45ea063f0a9272f62925c8150439af5640e74.tar.gz | |
usb: musb: Allow running without CONFIG_USB_PHY
Modify the core so that musb->xceiv is never deferenced without being
checked first.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20221026182657.146630-4-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb/musb_virthub.c')
| -rw-r--r-- | drivers/usb/musb/musb_virthub.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index 7eb929d75280..2b2164e028b3 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -50,7 +50,6 @@ void musb_host_finish_resume(struct work_struct *work) int musb_port_suspend(struct musb *musb, bool do_suspend) { - struct usb_otg *otg = musb->xceiv->otg; u8 power; void __iomem *mbase = musb->mregs; @@ -88,7 +87,8 @@ int musb_port_suspend(struct musb *musb, bool do_suspend) switch (musb_get_state(musb)) { case OTG_STATE_A_HOST: musb_set_state(musb, OTG_STATE_A_SUSPEND); - musb->is_active = otg->host->b_hnp_enable; + musb->is_active = musb->xceiv && + musb->xceiv->otg->host->b_hnp_enable; if (musb->is_active) mod_timer(&musb->otg_timer, jiffies + msecs_to_jiffies( @@ -97,7 +97,8 @@ int musb_port_suspend(struct musb *musb, bool do_suspend) break; case OTG_STATE_B_HOST: musb_set_state(musb, OTG_STATE_B_WAIT_ACON); - musb->is_active = otg->host->b_hnp_enable; + musb->is_active = musb->xceiv && + musb->xceiv->otg->host->b_hnp_enable; musb_platform_try_idle(musb, 0); break; default: @@ -196,8 +197,6 @@ void musb_port_reset(struct musb *musb, bool do_reset) void musb_root_disconnect(struct musb *musb) { - struct usb_otg *otg = musb->xceiv->otg; - musb->port1_status = USB_PORT_STAT_POWER | (USB_PORT_STAT_C_CONNECTION << 16); @@ -206,7 +205,7 @@ void musb_root_disconnect(struct musb *musb) switch (musb_get_state(musb)) { case OTG_STATE_A_SUSPEND: - if (otg->host->b_hnp_enable) { + if (musb->xceiv && musb->xceiv->otg->host->b_hnp_enable) { musb_set_state(musb, OTG_STATE_A_PERIPHERAL); musb->g.is_a_peripheral = 1; break; |