On Wed, 2017-02-01 at 21:43 +0000, Craig Kewley wrote:
> This patch fixes the checkpatch.pl warning:
> WARNING: Avoid multiple line dereference

Hi Craig.

Please try to make the code more sensible in preference to
just fixing checkpatch warnings.

> diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
[]
> @@ -692,8 +692,8 @@ static u16 vnt_generate_tx_parameter(struct 
> vnt_usb_send_context *tx_context,
>           tx_context->pkt_type == PK_TYPE_11GA) {
>               if (need_rts) {
>                       if (need_mic)
> -                             *mic_hdr = &tx_buffer->
> -                                             tx_head.tx_rts.tx.mic.hdr;
> +                             *mic_hdr =
> +                                     &tx_buffer->tx_head.tx_rts.tx.mic.hdr;
>  
>                       return vnt_rxtx_rts(tx_context, &tx_buffer->tx_head,
>                                           need_mic);

This block would be more legible using a temporary for
&tx_buffer->tx_head like:
---
 drivers/staging/vt6656/rxtx.c | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/vt6656/rxtx.c b/drivers/staging/vt6656/rxtx.c
index aa59e7f14ab3..89ca5c20cd1c 100644
--- a/drivers/staging/vt6656/rxtx.c
+++ b/drivers/staging/vt6656/rxtx.c
@@ -687,28 +687,27 @@ static u16 vnt_generate_tx_parameter(struct 
vnt_usb_send_context *tx_context,
        struct vnt_mic_hdr **mic_hdr, u32 need_mic,
        bool need_rts)
 {
+       union vnt_tx_head *tx_head = &tx_buffer->tx_head;
 
        if (tx_context->pkt_type == PK_TYPE_11GB ||
            tx_context->pkt_type == PK_TYPE_11GA) {
                if (need_rts) {
                        if (need_mic)
-                               *mic_hdr = &tx_buffer->
-                                               tx_head.tx_rts.tx.mic.hdr;
+                               *mic_hdr = &tx_head->tx_rts.tx.mic.hdr;
 
-                       return vnt_rxtx_rts(tx_context, &tx_buffer->tx_head,
-                                           need_mic);
+                       return vnt_rxtx_rts(tx_context, tx_head, need_mic);
                }
 
                if (need_mic)
-                       *mic_hdr = &tx_buffer->tx_head.tx_cts.tx.mic.hdr;
+                       *mic_hdr = &tx_head->tx_cts.tx.mic.hdr;
 
-               return vnt_rxtx_cts(tx_context, &tx_buffer->tx_head, need_mic);
+               return vnt_rxtx_cts(tx_context, tx_head, need_mic);
        }
 
        if (need_mic)
-               *mic_hdr = &tx_buffer->tx_head.tx_ab.tx.mic.hdr;
+               *mic_hdr = &tx_head->tx_ab.tx.mic.hdr;
 
-       return vnt_rxtx_ab(tx_context, &tx_buffer->tx_head, need_rts, need_mic);
+       return vnt_rxtx_ab(tx_context, tx_head, need_rts, need_mic);
 }
 
 static void vnt_fill_txkey(struct vnt_usb_send_context *tx_context,
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