USB: cypress_m8: fix ring-indicator detection and reporting

commit 440ebadeae9298d7de3d4d105342691841ec88d0 upstream.

Fix ring-indicator (RI) status-bit definition, which was defined as CTS,
effectively preventing RI-changes from being detected while reporting
false RI status.

This bug predates git.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/usb/serial/cypress_m8.h b/drivers/usb/serial/cypress_m8.h
index b461311..ce13e61 100644 (file)
--- a/drivers/usb/serial/cypress_m8.h
+++ b/drivers/usb/serial/cypress_m8.h
@@ -63,7 +63,7 @@
 #define UART_DSR       0x20    /* data set ready - flow control - device to host */
 #define CONTROL_RTS    0x10    /* request to send - flow control - host to device */
 #define UART_CTS       0x10    /* clear to send - flow control - device to host */
 #define UART_DSR       0x20    /* data set ready - flow control - device to host */
 #define CONTROL_RTS    0x10    /* request to send - flow control - host to device */
 #define UART_CTS       0x10    /* clear to send - flow control - device to host */

-#define UART_RI                0x10    /* ring indicator - modem - device to host */
+#define UART_RI                0x80    /* ring indicator - modem - device to host */

 #define UART_CD                0x40    /* carrier detect - modem - device to host */
 #define CYP_ERROR      0x08    /* received from input report - device to host */
 /* Note - the below has nothing to do with the "feature report" reset */
 #define UART_CD                0x40    /* carrier detect - modem - device to host */
 #define CYP_ERROR      0x08    /* received from input report - device to host */
 /* Note - the below has nothing to do with the "feature report" reset */