Remove unused includes

[elmcan.git] / module / can327.c

diff --git a/module/can327.c b/module/can327.c
index 833171cae03ceb55f5397be962cf9979b5dd9f6c..2d9c44e1df9d81e04b66b707c01e98c2c3a29057 100644 (file)
--- a/module/can327.c
+++ b/module/can327.c
@@ -14,14 +14,10 @@
 
 #include <linux/init.h>
 #include <linux/module.h>
-#include <linux/moduleparam.h>
 
-#include <linux/atomic.h>
 #include <linux/bitops.h>
 #include <linux/ctype.h>
-#include <linux/delay.h>
 #include <linux/errno.h>
-#include <linux/if_ether.h>
 #include <linux/kernel.h>
 #include <linux/list.h>
 #include <linux/lockdep.h>
@@ -57,7 +53,7 @@
 
 #define ELM327_NAPI_WEIGHT 4
 
-#define ELM327_SIZE_RXBUF 224
+#define ELM327_SIZE_RXBUF 992
 #define ELM327_SIZE_TXBUF 32
 
 #define ELM327_CAN_CONFIG_SEND_SFF           0x8000
@@ -762,6 +758,16 @@ static void elm327_parse_rxbuf(struct can327 *elm, size_t first_new_char_idx)
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,10,0)
 /* Dummy needed to use can_rx_offload */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,5,0)
+static unsigned int *can327_mailbox_read(struct can_rx_offload *offload,
+                                        struct can_frame *cf,
+                                        u32 *timestamp, unsigned int n)
+{
+       WARN_ON_ONCE(1); /* This function is a dummy, so don't call it! */
+
+       return -ENOBUFS;
+}
+#else /* Since 4e9c9484b085 (included in v5.5) */
 static struct sk_buff *can327_mailbox_read(struct can_rx_offload *offload,
                                           unsigned int n, u32 *timestamp,
                                           bool drop)
@@ -771,6 +777,7 @@ static struct sk_buff *can327_mailbox_read(struct can_rx_offload *offload,
        return ERR_PTR(-ENOBUFS);
 }
 #endif
+#endif
 
 static int can327_netdev_open(struct net_device *dev)
 {
@@ -982,7 +989,7 @@ static void can327_ldisc_rx(struct tty_struct *tty,
        }
 
        if (count >= 0) {
-               netdev_err(elm->dev, "Receive buffer overflowed. Bad chip or wiring?");
+               netdev_err(elm->dev, "Receive buffer overflowed. Bad chip or wiring? count = %i", count);
 
                elm327_uart_side_failure(elm);