staging: r8188eu: we use a constant number of hw_xmit entries

struct xmit_priv contains a pointer to an array of struct hw_xmit entries.
xmit_priv's (ill-named) hwxmit_entry component stores the size of this
array, i.e. the number of hw_xmit entries that are used.

The array size is constant, it's initialised to HWXMIT_ENTRY and never
updated. Simplify the code accordingly. Remove hwxmit_entry, do not pass
the array size as a function parameter and use HWXMIT_ENTRY in the code
that handles the array.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Link: https://lore.kernel.org/r/20230123205342.229589-2-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_xmit.c

@@ -1375,7 +1375,7 @@ static struct xmit_frame *dequeue_one_xmitframe(struct xmit_priv *pxmitpriv, str
 	return pxmitframe;
 }
 
-struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit_i, int entry)
+struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit_i)
 {
 	struct list_head *sta_plist, *sta_phead;
 	struct hw_xmit *phwxmit;
@@ -1397,7 +1397,7 @@ struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmi
 
 	spin_lock_bh(&pxmitpriv->lock);
 
-	for (i = 0; i < entry; i++) {
+	for (i = 0; i < HWXMIT_ENTRY; i++) {
 		phwxmit = phwxmit_i + inx[i];
 
 		sta_phead = get_list_head(phwxmit->sta_queue);
@@ -1501,9 +1501,7 @@ int rtw_alloc_hwxmits(struct adapter *padapter)
 	struct hw_xmit *hwxmits;
 	struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 
-	pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
-
-	pxmitpriv->hwxmits = kcalloc(pxmitpriv->hwxmit_entry, sizeof(struct hw_xmit), GFP_KERNEL);
+	pxmitpriv->hwxmits = kcalloc(HWXMIT_ENTRY, sizeof(struct hw_xmit), GFP_KERNEL);
 	if (!pxmitpriv->hwxmits)
 		return -ENOMEM;
 

drivers/staging/r8188eu/hal/rtl8188eu_xmit.c

@@ -398,7 +398,7 @@ bool rtl8188eu_xmitframe_complete(struct adapter *adapt, struct xmit_priv *pxmit
 	if (!pxmitbuf)
 		return false;
 
-	pxmitframe = rtw_dequeue_xframe(pxmitpriv, pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
+	pxmitframe = rtw_dequeue_xframe(pxmitpriv, pxmitpriv->hwxmits);
 	if (!pxmitframe) {
 		/*  no more xmit frame, release xmit buffer */
 		rtw_free_xmitbuf(pxmitpriv, pxmitbuf);

drivers/staging/r8188eu/include/rtw_xmit.h

@@ -273,7 +273,6 @@ struct	xmit_priv {
 	u64	last_tx_bytes;
 	u64	last_tx_pkts;
 	struct hw_xmit *hwxmits;
-	u8	hwxmit_entry;
 	u8	wmm_para_seq[4];/* sequence for wmm ac parameter strength
 				 * from large to small. it's value is 0->vo,
 				 * 1->vi, 2->be, 3->bk. */
@@ -324,7 +323,7 @@ struct tx_servq *rtw_get_sta_pending(struct adapter *padapter,
 s32 rtw_xmitframe_enqueue(struct adapter *padapter,
 			  struct xmit_frame *pxmitframe);
 struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv,
-				      struct hw_xmit *phwxmit_i, int entry);
+				      struct hw_xmit *phwxmit_i);
 
 s32 rtw_xmit_classifier(struct adapter *padapter,
 			struct xmit_frame *pxmitframe);