| From | Ben Hutchings <> | Date | Sun, 02 Aug 2015 01:02:37 +0100 | Subject | [PATCH 3.2 011/164] cdc-wdm: fix endianness bug in debug statements |
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3.2.70-rc1 review patch. If anyone has any objections, please let me know.
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From: Oliver Neukum <oneukum@suse.de>
commit 323ece54e0761198946ecd0c2091f1d2bfdfcb64 upstream.
Values directly from descriptors given in debug statements must be converted to native endianness.
Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings <ben@decadent.org.uk> --- drivers/usb/class/cdc-wdm.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
--- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -224,7 +224,7 @@ static void wdm_int_callback(struct urb case USB_CDC_NOTIFY_RESPONSE_AVAILABLE: dev_dbg(&desc->intf->dev, "NOTIFY_RESPONSE_AVAILABLE received: index %d len %d", - dr->wIndex, dr->wLength); + le16_to_cpu(dr->wIndex), le16_to_cpu(dr->wLength)); break; case USB_CDC_NOTIFY_NETWORK_CONNECTION: @@ -237,14 +237,16 @@ static void wdm_int_callback(struct urb clear_bit(WDM_POLL_RUNNING, &desc->flags); dev_err(&desc->intf->dev, "unknown notification %d received: index %d len %d\n", - dr->bNotificationType, dr->wIndex, dr->wLength); + dr->bNotificationType, + le16_to_cpu(dr->wIndex), + le16_to_cpu(dr->wLength)); goto exit; } req->bRequestType = (USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE); req->bRequest = USB_CDC_GET_ENCAPSULATED_RESPONSE; req->wValue = 0; - req->wIndex = desc->inum; + req->wIndex = desc->inum; /* already converted */ req->wLength = cpu_to_le16(desc->wMaxCommand); usb_fill_control_urb( @@ -401,7 +403,7 @@ static ssize_t wdm_write USB_RECIP_INTERFACE); req->bRequest = USB_CDC_SEND_ENCAPSULATED_COMMAND; req->wValue = 0; - req->wIndex = desc->inum; + req->wIndex = desc->inum; /* already converted */ req->wLength = cpu_to_le16(count); set_bit(WDM_IN_USE, &desc->flags); desc->outbuf = buf; @@ -414,7 +416,7 @@ static ssize_t wdm_write dev_err(&desc->intf->dev, "Tx URB error: %d\n", rv); } else { dev_dbg(&desc->intf->dev, "Tx URB has been submitted index=%d", - req->wIndex); + le16_to_cpu(req->wIndex)); } out: usb_autopm_put_interface(desc->intf);
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