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Merge "usb: gadget: qdss: Add NULL check against priv_usb with usb_qdss_close()"

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This commit is contained in:
qctecmdr 2020-04-11 21:14:45 -07:00 • committed by Gerrit - the friendly Code Review server
commit 6c1dddc89d
1 changed files with 9 additions and 1 deletions
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10
drivers/usb/gadget/function/f_qdss.c
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@ -1001,7 +1001,7 @@ EXPORT_SYMBOL(usb_qdss_open);
void usb_qdss_close(struct usb_qdss_ch *ch)
{
struct f_qdss *qdss = ch->priv_usb;
struct f_qdss *qdss;
struct usb_gadget *gadget;
unsigned long flags;
int status;
@ -1009,6 +1009,14 @@ void usb_qdss_close(struct usb_qdss_ch *ch)
pr_debug("%s\n", __func__);
spin_lock_irqsave(&qdss_lock, flags);
if (!ch->priv_usb) {
spin_unlock_irqrestore(&qdss_lock, flags);
pr_err("%s is called for %s without calling usb_qdss_open()\n",
__func__, ch->name);
return;
}
qdss = ch->priv_usb;
ch->priv_usb = NULL;
if (!qdss || !qdss->usb_connected ||
!strcmp(qdss->ch.name, USB_QDSS_CH_MDM)) {