3.2.75-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Ben Hutchings <b...@decadent.org.uk>
Extracted from commit 16142655269a ("USB: cdc-acm - blacklist IMS PCU
device").
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -916,6 +916,10 @@ static int acm_probe(struct usb_interfac
/* normal quirks */
quirks = (unsigned long)id->driver_info;
+
+ if (quirks == IGNORE_DEVICE)
+ return -ENODEV;
+
num_rx_buf = (quirks == SINGLE_RX_URB) ? 1 : ACM_NR;
/* handle quirks deadly to normal probing*/
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -127,4 +127,5 @@ struct acm {
#define NO_CAP_LINE 4
#define NOT_A_MODEM 8
#define NO_DATA_INTERFACE 16
+#define IGNORE_DEVICE 32
#define CLEAR_HALT_CONDITIONS BIT(7)
--
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