brcmfmac: remove dummy cache flush/invalidate function

brcmf_dma_flush and brcmf_dma_invalidate_cache are not necessary and
have never been implemented.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/commonring.c b/drivers/net/wireless/brcm80211/brcmfmac/commonring.c
index 77656c7..26c6587 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/commonring.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/commonring.c
@@ -22,17 +22,6 @@
 #include "core.h"
 #include "commonring.h"
 
-
-/* dma flushing needs implementation for mips and arm platforms. Should
- * be put in util. Note, this is not real flushing. It is virtual non
- * cached memory. Only write buffers should have to be drained. Though
- * this may be different depending on platform......
- * SEE ALSO msgbuf.c
- */
-#define brcmf_dma_flush(addr, len)
-#define brcmf_dma_invalidate_cache(addr, len)
-
-
 void brcmf_commonring_register_cb(struct brcmf_commonring *commonring,
                                  int (*cr_ring_bell)(void *ctx),
                                  int (*cr_update_rptr)(void *ctx),
@@ -206,14 +195,9 @@ int brcmf_commonring_write_complete(struct brcmf_commonring *commonring)
        address = commonring->buf_addr;
        address += (commonring->f_ptr * commonring->item_len);
        if (commonring->f_ptr > commonring->w_ptr) {
-               brcmf_dma_flush(address,
-                               (commonring->depth - commonring->f_ptr) *
-                               commonring->item_len);
                address = commonring->buf_addr;
                commonring->f_ptr = 0;
        }
-       brcmf_dma_flush(address, (commonring->w_ptr - commonring->f_ptr) *
-                       commonring->item_len);
 
        commonring->f_ptr = commonring->w_ptr;
 
@@ -258,8 +242,6 @@ void *brcmf_commonring_get_read_ptr(struct brcmf_commonring *commonring,
        if (commonring->r_ptr == commonring->depth)
                commonring->r_ptr = 0;
 
-       brcmf_dma_invalidate_cache(ret_addr, *n_ items * commonring->item_len);
-
        return ret_addr;
 }
 

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
index b182f53..a932e45 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/msgbuf.c
@@ -278,16 +278,6 @@ struct brcmf_msgbuf_pktids {
        struct brcmf_msgbuf_pktid *array;
 };
 
-
-/* dma flushing needs implementation for mips and arm platforms. Should
- * be put in util. Note, this is not real flushing. It is virtual non
- * cached memory. Only write buffers should have to be drained. Though
- * this may be different depending on platform......
- */
-#define brcmf_dma_flush(addr, len)
-#define brcmf_dma_invalidate_cache(addr, len)
-
-
 static void brcmf_msgbuf_rxbuf_ioctlresp_post(struct brcmf_msgbuf *msgbuf);
 
 
@@ -462,7 +452,6 @@ static int brcmf_msgbuf_tx_ioctl(struct brcmf_pub *drvr, int ifidx,
                memcpy(msgbuf->ioctbuf, buf, buf_len);
        else
                memset(msgbuf->ioctbuf, 0, buf_len);
-       brcmf_dma_flush(ioctl_buf, buf_len);
 
        err = brcmf_commonring_write_complete(commonring);
        brcmf_commonring_unlock(commonring);

diff --git a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c
index 6ca3037..2bc24a4 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/pcie.c
@@ -276,15 +276,6 @@ static const u32 brcmf_ring_itemsize[BRCMF_NROF_COMMON_MSGRINGS] = {
 };
 
 
-/* dma flushing needs implementation for mips and arm platforms. Should
- * be put in util. Note, this is not real flushing. It is virtual non
- * cached memory. Only write buffers should have to be drained. Though
- * this may be different depending on platform......
- */
-#define brcmf_dma_flush(addr, len)
-#define brcmf_dma_invalidate_cache(addr, len)
-
-
 static u32
 brcmf_pcie_read_reg32(struct brcmf_pciedev_info *devinfo, u32 reg_offset)
 {
@@ -1174,7 +1165,6 @@ static int brcmf_pcie_init_scratchbuffers(struct brcmf_pciedev_info *devinfo)
                goto fail;
 
        memset(devinfo->shared.scratch, 0, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
-       brcmf_dma_flush(devinfo->shared.scratch, BRCMF_DMA_D2H_SCRATCH_BUF_LEN);
 
        addr = devinfo->shared.tcm_base_address +
               BRCMF_SHARED_DMA_SCRATCH_ADDR_OFFSET;
@@ -1192,7 +1182,6 @@ static int brcmf_pcie_init_scratchbuffers(struct brcmf_pciedev_info *devinfo)
                goto fail;
 
        memset(devinfo->shared.ringupd, 0, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
-       brcmf_dma_flush(devinfo->shared.ringupd, BRCMF_DMA_D2H_RINGUPD_BUF_LEN);
 
        addr = devinfo->shared.tcm_base_address +
               BRCMF_SHARED_DMA_RINGUPD_ADDR_OFFSET;