n_hdlc: remove useless whitespace at line wraps

Do
  s@[ \t]\+$@@
  s@ \+\t@\t@
on the file as there are many spaces at the begininning of lines and
many spaces/tabs at EOLs. And vim screamed.

git show -w is supposed to show no difference here.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20200219084118.26491-20-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/n_hdlc.c b/drivers/tty/n_hdlc.c
index 048e5a155beaeb328bfc2037391bb077475263c3..ee27573b0624e45c30e1b136b409f6b39eef7488 100644 (file)
--- a/drivers/tty/n_hdlc.c
+++ b/drivers/tty/n_hdlc.c
@@ -18,7 +18,7 @@
  * All HDLC data is frame oriented which means:
  *
  * 1. tty write calls represent one complete transmit frame of data
- *    The device driver should accept the complete frame or none of 
+ *    The device driver should accept the complete frame or none of
  *    the frame (busy) in the write method. Each write call should have
  *    a byte count in the range of 2-65535 bytes (2 is min HDLC frame
  *    with 1 addr byte and 1 ctrl byte). The max byte count of 65535
@@ -39,7 +39,7 @@
  *    tty read calls.
  *
  * 3. tty read calls returns an entire frame of data or nothing.
- *    
+ *
  * 4. all send and receive data is considered raw. No processing
  *    or translation is performed by the line discipline, regardless
  *    of the tty flags
@@ -104,7 +104,7 @@
 /*
  * Buffers for individual HDLC frames
  */
-#define MAX_HDLC_FRAME_SIZE 65535 
+#define MAX_HDLC_FRAME_SIZE 65535
 #define DEFAULT_RX_BUF_COUNT 10
 #define MAX_RX_BUF_COUNT 60
 #define DEFAULT_TX_BUF_COUNT 3
@@ -234,24 +234,24 @@ static int n_hdlc_tty_open (struct tty_struct *tty)
                pr_err("%s: tty already associated!\n", __func__);
                return -EEXIST;
        }
-       
+
        n_hdlc = n_hdlc_alloc();
        if (!n_hdlc) {
                pr_err("%s: n_hdlc_alloc failed\n", __func__);
                return -ENFILE;
        }
-               
+
        tty->disc_data = n_hdlc;
        tty->receive_room = 65536;
-       
+
        /* change tty_io write() to not split large writes into 8K chunks */
        set_bit(TTY_NO_WRITE_SPLIT,&tty->flags);
-       
+
        /* flush receive data from driver */
        tty_driver_flush_buffer(tty);
 
        return 0;
-       
+
 }      /* end of n_tty_hdlc_open() */
 
 /**
@@ -269,9 +269,9 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
        unsigned long flags;
        struct n_hdlc_buf *tbuf;
 
- check_again:
-               
-       spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
+check_again:
+
+       spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
        if (n_hdlc->tbusy) {
                n_hdlc->woke_up = true;
                spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
@@ -299,7 +299,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
                /* pretending it was accepted by driver */
                if (actual < 0)
                        actual = tbuf->count;
-               
+
                if (actual == tbuf->count) {
                        pr_debug("%s(%d)frame %p completed\n",
                                        __FILE__, __LINE__, tbuf);
@@ -309,7 +309,7 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
 
                        /* wait up sleeping writers */
                        wake_up_interruptible(&tty->write_wait);
-       
+
                        /* get next pending transmit buffer */
                        tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
                } else {
@@ -324,17 +324,17 @@ static void n_hdlc_send_frames(struct n_hdlc *n_hdlc, struct tty_struct *tty)
                        break;
                }
        }
-       
+
        if (!tbuf)
                clear_bit(TTY_DO_WRITE_WAKEUP, &tty->flags);
-       
+
        /* Clear the re-entry flag */
        spin_lock_irqsave(&n_hdlc->tx_buf_list.spinlock, flags);
        n_hdlc->tbusy = false;
-       spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags); 
-       
-        if (n_hdlc->woke_up)
-         goto check_again;
+       spin_unlock_irqrestore(&n_hdlc->tx_buf_list.spinlock, flags);
+
+       if (n_hdlc->woke_up)
+               goto check_again;
 }      /* end of n_hdlc_send_frames() */
 
 /**
@@ -375,14 +375,14 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
                                __FILE__, __LINE__);
                return;
        }
-       
+
        if ( count>maxframe ) {
                pr_debug("%s(%d) rx count>maxframesize, data discarded\n",
                                __FILE__, __LINE__);
                return;
        }
 
-       /* get a free HDLC buffer */    
+       /* get a free HDLC buffer */
        buf = n_hdlc_buf_get(&n_hdlc->rx_free_buf_list);
        if (!buf) {
                /* no buffers in free list, attempt to allocate another rx buffer */
@@ -391,20 +391,20 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
                        buf = kmalloc(struct_size(buf, buf, maxframe),
                                      GFP_ATOMIC);
        }
-       
+
        if (!buf) {
                pr_debug("%s(%d) no more rx buffers, data discarded\n",
                                __FILE__, __LINE__);
                return;
        }
-               
+
        /* copy received data to HDLC buffer */
        memcpy(buf->buf,data,count);
        buf->count=count;
 
        /* add HDLC buffer to list of received frames */
        n_hdlc_buf_put(&n_hdlc->rx_buf_list, buf);
-       
+
        /* wake up any blocked reads and perform async signalling */
        wake_up_interruptible (&tty->read_wait);
        if (tty->fasync != NULL)
@@ -418,7 +418,7 @@ static void n_hdlc_tty_receive(struct tty_struct *tty, const __u8 *data,
  * @file - pointer to open file object
  * @buf - pointer to returned data buffer
  * @nr - size of returned data buffer
- *     
+ *
  * Returns the number of bytes returned or error code.
  */
 static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
@@ -468,7 +468,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
                                n_hdlc_buf_put(&n_hdlc->rx_free_buf_list, rbuf);
                        break;
                }
-                       
+
                /* no data */
                if (tty_io_nonblock(tty, file)) {
                        ret = -EAGAIN;
@@ -487,7 +487,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
        __set_current_state(TASK_RUNNING);
 
        return ret;
-       
+
 }      /* end of n_hdlc_tty_read() */
 
 /**
@@ -496,7 +496,7 @@ static ssize_t n_hdlc_tty_read(struct tty_struct *tty, struct file *file,
  * @file - pointer to file object data
  * @data - pointer to transmit data (one frame)
  * @count - size of transmit frame in bytes
- *             
+ *
  * Returns the number of bytes written (or error code).
  */
 static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
@@ -519,12 +519,12 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
                                __func__, count, maxframe);
                count = maxframe;
        }
-       
+
        add_wait_queue(&tty->write_wait, &wait);
 
        for (;;) {
                set_current_state(TASK_INTERRUPTIBLE);
-       
+
                tbuf = n_hdlc_buf_get(&n_hdlc->tx_free_buf_list);
                if (tbuf)
                        break;
@@ -544,7 +544,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
        __set_current_state(TASK_RUNNING);
        remove_wait_queue(&tty->write_wait, &wait);
 
-       if (!error) {           
+       if (!error) {
                /* Retrieve the user's buffer */
                memcpy(tbuf->buf, data, count);
 
@@ -555,7 +555,7 @@ static ssize_t n_hdlc_tty_write(struct tty_struct *tty, struct file *file,
        }
 
        return error;
-       
+
 }      /* end of n_hdlc_tty_write() */
 
 /**
@@ -623,7 +623,7 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
                break;
        }
        return error;
-       
+
 }      /* end of n_hdlc_tty_ioctl() */
 
 /**
@@ -631,7 +631,7 @@ static int n_hdlc_tty_ioctl(struct tty_struct *tty, struct file *file,
  * @tty - pointer to tty instance data
  * @filp - pointer to open file object for device
  * @poll_table - wait queue for operations
- * 
+ *
  * Determine which operations (read/write) will not block and return info
  * to caller.
  * Returns a bit mask containing info on which ops will not block.
@@ -712,7 +712,7 @@ static struct n_hdlc *n_hdlc_alloc(void)
        n_hdlc->magic  = HDLC_MAGIC;
 
        return n_hdlc;
-       
+
 }      /* end of n_hdlc_alloc() */
 
 /**
@@ -754,7 +754,7 @@ static void n_hdlc_buf_put(struct n_hdlc_buf_list *buf_list,
 /**
  * n_hdlc_buf_get - remove and return an HDLC buffer from list
  * @buf_list - pointer to HDLC buffer list
- * 
+ *
  * Remove and return an HDLC buffer from the head of the specified HDLC buffer
  * list.
  * Returns a pointer to HDLC buffer if available, otherwise %NULL.
@@ -808,7 +808,7 @@ static int __init n_hdlc_init(void)
                                status);
 
        return status;
-       
+
 }      /* end of init_module() */
 
 static void __exit n_hdlc_exit(void)