staging: brcm80211: remove dma_addrwidth() function

The function dma_addrwidth() always returns the same value so
it is redundant. As such it has been removed.

Reviewed-by: Henry Ptasinski <henryp@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/brcm80211/brcmsmac/dma.c b/drivers/staging/brcm80211/brcmsmac/dma.c
index e662023..27b07ce 100644 (file)
--- a/drivers/staging/brcm80211/brcmsmac/dma.c
+++ b/drivers/staging/brcm80211/brcmsmac/dma.c
@@ -159,15 +159,9 @@
 #define D64_RX_FRM_STS_DSCRCNT 0x0f000000  /* no. of descriptors used - 1 */
 #define D64_RX_FRM_STS_DATATYPE        0xf0000000      /* core-dependent data type */
 
-#define        DMADDRWIDTH_30  30      /* 30-bit addressing capability */
-#define        DMADDRWIDTH_32  32      /* 32-bit addressing capability */
-#define        DMADDRWIDTH_63  63      /* 64-bit addressing capability */
-#define        DMADDRWIDTH_64  64      /* 64-bit addressing capability */
-
 #define DMA64_DD_PARITY(dd) \
        parity32((dd)->addrlow ^ (dd)->addrhigh ^ (dd)->ctrl1 ^ (dd)->ctrl2)
 
-
 /*
  * packet headroom necessary to accommodate the largest header
  * in the system, (i.e TXOFF). By doing, we avoid the need to
@@ -1936,23 +1930,6 @@ static void dma64_txrotate(struct dma_info *di)
              di->xmtptrbase + I2B(di->txout, struct dma64desc));
 }
 
-uint dma_addrwidth(struct si_pub *sih, void *dmaregs)
-{
-       /* Perform 64-bit checks only if we want to advertise 64-bit (> 32bit) capability) */
-       /* DMA engine is 64-bit capable */
-       if ((ai_core_sflags(sih, 0, 0) & SISF_DMA64) == SISF_DMA64) {
-               /* backplane are 64-bit capable */
-               if (ai_backplane64(sih))
-                       /* If bus is System Backplane or PCIE then we can access 64-bits */
-                       if ((sih->bustype == SI_BUS) ||
-                           ((sih->bustype == PCI_BUS) &&
-                            (sih->buscoretype == PCIE_CORE_ID)))
-                               return DMADDRWIDTH_64;
-       }
-       /* DMA hardware not supported by this driver */
-       return DMADDRWIDTH_64;
-}
-
 /*
  * Mac80211 initiated actions sometimes require packets in the DMA queue to be
  * modified. The modified portion of the packet is not under control of the DMA

diff --git a/drivers/staging/brcm80211/brcmsmac/dma.h b/drivers/staging/brcm80211/brcmsmac/dma.h
index 4a33028..f75a020 100644 (file)
--- a/drivers/staging/brcm80211/brcmsmac/dma.h
+++ b/drivers/staging/brcm80211/brcmsmac/dma.h
@@ -178,12 +178,6 @@ extern const struct di_fcn_s dma64proc;
 #define dma_txcommitted(di)            (dma64proc.txcommitted(di))
 
 
-/* return addresswidth allowed
- * This needs to be done after SB attach but before dma attach.
- * SB attach provides ability to probe backplane and dma core capabilities
- * This info is needed by DMA_ALLOC_CONSISTENT in dma attach
- */
-extern uint dma_addrwidth(struct si_pub *sih, void *dmaregs);
 void dma_walk_packets(struct dma_pub *dmah, void (*callback_fnc)
                      (void *pkt, void *arg_a), void *arg_a);
 

diff --git a/drivers/staging/brcm80211/brcmsmac/main.c b/drivers/staging/brcm80211/brcmsmac/main.c
index d2551e9..e7a166f 100644 (file)
--- a/drivers/staging/brcm80211/brcmsmac/main.c
+++ b/drivers/staging/brcm80211/brcmsmac/main.c
@@ -861,14 +861,7 @@ static bool brcms_b_attach_dmapio(struct brcms_c_info *wlc, uint j, bool wme)
        snprintf(name, sizeof(name), "wl%d", unit);
 
        if (wlc_hw->di[0] == 0) {       /* Init FIFOs */
-               uint addrwidth;
                int dma_attach_err = 0;
-               /* Find out the DMA addressing capability and let OS know
-                * All the channels within one DMA core have 'common-minimum' same
-                * capability
-                */
-               addrwidth =
-                   dma_addrwidth(wlc_hw->sih, DMAREG(wlc_hw, DMA_TX, 0));
 
                /*
                 * FIFO 0