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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-02 19:31:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-02 19:31:18 +0200 |
| commit | 7a81146204859c6f8d8daf3ab7a25af17dfecd5f (patch) | |
| tree | 6bcd14e38f8f44621521faf66565a97ee6ad461e /drivers/usb/class | |
| parent | 96e46dcfb8534494859936b3da4f3018de53a53f (diff) | |
| parent | 089cf7f6ecb266b6a4164919a2e69bd2f938374a (diff) | |
| download | linux-riscv-7a81146204859c6f8d8daf3ab7a25af17dfecd5f.tar.gz linux-riscv-7a81146204859c6f8d8daf3ab7a25af17dfecd5f.tar.bz2 linux-riscv-7a81146204859c6f8d8daf3ab7a25af17dfecd5f.zip | |
Merge 5.3-rc7 into usb-next
We need the usb fixes in here for testing
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/class')
| -rw-r--r-- | drivers/usb/class/cdc-wdm.c | 16 | ||||
| -rw-r--r-- | drivers/usb/class/usbtmc.c | 3 |
2 files changed, 15 insertions, 4 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index a7824a51f86d..70afb2ca1eab 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -587,10 +587,20 @@ static int wdm_flush(struct file *file, fl_owner_t id) { struct wdm_device *desc = file->private_data; - wait_event(desc->wait, !test_bit(WDM_IN_USE, &desc->flags)); + wait_event(desc->wait, + /* + * needs both flags. We cannot do with one + * because resetting it would cause a race + * with write() yet we need to signal + * a disconnect + */ + !test_bit(WDM_IN_USE, &desc->flags) || + test_bit(WDM_DISCONNECTING, &desc->flags)); /* cannot dereference desc->intf if WDM_DISCONNECTING */ - if (desc->werr < 0 && !test_bit(WDM_DISCONNECTING, &desc->flags)) + if (test_bit(WDM_DISCONNECTING, &desc->flags)) + return -ENODEV; + if (desc->werr < 0) dev_err(&desc->intf->dev, "Error in flush path: %d\n", desc->werr); @@ -974,8 +984,6 @@ static void wdm_disconnect(struct usb_interface *intf) spin_lock_irqsave(&desc->iuspin, flags); set_bit(WDM_DISCONNECTING, &desc->flags); set_bit(WDM_READ, &desc->flags); - /* to terminate pending flushes */ - clear_bit(WDM_IN_USE, &desc->flags); spin_unlock_irqrestore(&desc->iuspin, flags); wake_up_all(&desc->wait); mutex_lock(&desc->rlock); diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 7ff831f2fd21..dcd7066ffba2 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -2359,8 +2359,11 @@ static int usbtmc_probe(struct usb_interface *intf, goto err_put; } + retcode = -EINVAL; data->bulk_in = bulk_in->bEndpointAddress; data->wMaxPacketSize = usb_endpoint_maxp(bulk_in); + if (!data->wMaxPacketSize) + goto err_put; dev_dbg(&intf->dev, "Found bulk in endpoint at %u\n", data->bulk_in); data->bulk_out = bulk_out->bEndpointAddress; |