Previously, these drivers would check /sys/devices/virtual/misc/tun to see if TUN is supported, and bail out otherwise. However, the tun module can sometimes be autoloaded by opening the /dev/net/tun file. In this case the /dev file already exists, but the /sys file only gets created after the modul is loaded. Additionally, the ppp code does not use the /sys file, but only the /dev file, so checking for the existence of the latter seems a better indicator of expected success. --- This patch was only tested with the atmodem driver, but the other two seem similar enough that it should work there as well. This is a verbatim resend of this patch, orginally sent on 15th of July, as requested by Denis Kenzior. --- drivers/atmodem/gprs-context.c | 4 ++-- drivers/cdmamodem/connman.c | 4 ++-- drivers/ifxmodem/gprs-context.c | 4 ++-- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/atmodem/gprs-context.c b/drivers/atmodem/gprs-context.c index 9b9679e8..42ec556d 100644 --- a/drivers/atmodem/gprs-context.c +++ b/drivers/atmodem/gprs-context.c @@ -43,7 +43,7 @@ #include "atmodem.h" #include "vendor.h" -#define TUN_SYSFS_DIR "/sys/devices/virtual/misc/tun" +#define TUN_DEV "/dev/net/tun" #define STATIC_IP_NETMASK "255.255.255.255" @@ -426,7 +426,7 @@ static int at_gprs_context_probe(struct ofono_gprs_context *gc, DBG(""); - if (stat(TUN_SYSFS_DIR, &st) < 0) { + if (stat(TUN_DEV, &st) < 0) { ofono_error("Missing support for TUN/TAP devices"); return -ENODEV; } diff --git a/drivers/cdmamodem/connman.c b/drivers/cdmamodem/connman.c index 8c3265a1..7f0f54b6 100644 --- a/drivers/cdmamodem/connman.c +++ b/drivers/cdmamodem/connman.c @@ -43,7 +43,7 @@ #include "cdmamodem.h" #include "drivers/atmodem/vendor.h" -#define TUN_SYSFS_DIR "/sys/devices/virtual/misc/tun" +#define TUN_DEV "/dev/net/tun" #define STATIC_IP_NETMASK "255.255.255.255" @@ -285,7 +285,7 @@ static int cdma_connman_probe(struct ofono_cdma_connman *cm, DBG(""); - if (stat(TUN_SYSFS_DIR, &st) < 0) { + if (stat(TUN_DEV, &st) < 0) { ofono_error("Missing support for TUN/TAP devices"); return -ENODEV; } diff --git a/drivers/ifxmodem/gprs-context.c b/drivers/ifxmodem/gprs-context.c index b7b102b9..52a3672c 100644 --- a/drivers/ifxmodem/gprs-context.c +++ b/drivers/ifxmodem/gprs-context.c @@ -42,7 +42,7 @@ #include "ifxmodem.h" -#define TUN_SYSFS_DIR "/sys/devices/virtual/misc/tun" +#define TUN_DEV "/dev/net/tun" #define STATIC_IP_NETMASK "255.255.255.255" @@ -470,7 +470,7 @@ static int ifx_gprs_context_probe(struct ofono_gprs_context *gc, DBG(""); - if (stat(TUN_SYSFS_DIR, &st) < 0) { + if (stat(TUN_DEV, &st) < 0) { ofono_error("Missing support for TUN/TAP devices"); return -ENODEV; } -- 2.11.0