ltq-atm: add Linux 5.0+ compatibility

Upstream commit 96d4f267e40f95 ("Remove 'type' argument from access_ok()
function") removes the first argument to access_ok.
Adjust the code so it builds with Linux 5.4.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Mathias Kresin <dev@kresin.me>

diff --git a/package/kernel/lantiq/ltq-atm/src/ltq_atm.c b/package/kernel/lantiq/ltq-atm/src/ltq_atm.c
index 6e6f4c66c7d7f4959bfb622b99004f49b7e9495d..267a515df6c0ccaaa4ac9c9797399c89e4003fea 100644 (file)
--- a/package/kernel/lantiq/ltq-atm/src/ltq_atm.c
+++ b/package/kernel/lantiq/ltq-atm/src/ltq_atm.c
@@ -289,9 +289,17 @@ static int ppe_ioctl(struct atm_dev *dev, unsigned int cmd, void *arg)
                return -ENOTTY;
 
        if ( _IOC_DIR(cmd) & _IOC_READ )
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+               ret = !access_ok(arg, _IOC_SIZE(cmd));
+#else
                ret = !access_ok(VERIFY_WRITE, arg, _IOC_SIZE(cmd));
+#endif
        else if ( _IOC_DIR(cmd) & _IOC_WRITE )
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(5,0,0)
+               ret = !access_ok(arg, _IOC_SIZE(cmd));
+#else
                ret = !access_ok(VERIFY_READ, arg, _IOC_SIZE(cmd));
+#endif
        if ( ret )
                return -EFAULT;