staging: mt7621-mmc: Remove unused field xfersz from msdc_dma

The xfersz field of msdc_dma is only set to host->xfer_size and this
is also available at the (few) positions, where dma.xfersz is used, so
it is removed.

Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/mt7621-mmc/mt6575_sd.h b/drivers/staging/mt7621-mmc/mt6575_sd.h
index ee79699..578f23a 100644 (file)
--- a/drivers/staging/mt7621-mmc/mt6575_sd.h
+++ b/drivers/staging/mt7621-mmc/mt6575_sd.h
@@ -890,7 +890,6 @@ struct msdc_regs {
 };
 
 struct msdc_dma {
-       u32 xfersz;                  /* xfer size in bytes */
        u32 sglen;                   /* size of scatter list */
        struct scatterlist *sg;      /* I/O scatter list */
        u8  mode;                    /* dma mode        */

diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c
index 2e63fb7..79436d3 100644 (file)
--- a/drivers/staging/mt7621-mmc/sd.c
+++ b/drivers/staging/mt7621-mmc/sd.c
@@ -1259,7 +1259,7 @@ static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
 
        switch (dma->mode) {
        case MSDC_MODE_DMA_BASIC:
-               BUG_ON(dma->xfersz > 65535);
+               BUG_ON(host->xfer_size > 65535);
                BUG_ON(dma->sglen != 1);
                sdr_write32(MSDC_DMA_SA, PHYSADDR(sg_dma_address(sg)));
                sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_LASTBUF, 1);
@@ -1332,14 +1332,14 @@ static void msdc_dma_setup(struct msdc_host *host, struct msdc_dma *dma,
 
        dma->sg = sg;
        dma->sglen = sglen;
-       dma->xfersz = host->xfer_size;
 
        if (sglen == 1 && sg_dma_len(sg) <= MAX_DMA_CNT)
                dma->mode = MSDC_MODE_DMA_BASIC;
        else
                dma->mode = MSDC_MODE_DMA_DESC;
 
-       N_MSG(DMA, "DMA mode<%d> sglen<%d> xfersz<%d>", dma->mode, dma->sglen, dma->xfersz);
+       N_MSG(DMA, "DMA mode<%d> sglen<%d> xfersz<%d>", dma->mode, dma->sglen,
+             host->xfer_size);
 
        msdc_dma_config(host, dma);
 }
@@ -2221,7 +2221,7 @@ static irqreturn_t msdc_irq(int irq, void *dev_id)
        /* transfer complete interrupt */
        if (data != NULL) {
                if (inten & MSDC_INT_XFER_COMPL) {
-                       data->bytes_xfered = host->dma.xfersz;
+                       data->bytes_xfered = host->xfer_size;
                        complete(&host->xfer_done);
                }