staging: mt7621-mmc: Remove unused fields from msdc_dma
The fields used_gpd|bd in struct msdc_dma are only set and reset, but never used, so remove them. The other removed fields are never used, so they were removed either. Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -889,13 +889,6 @@ struct msdc_regs {
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struct msdc_eco_ver_reg eco_ver; /* base+0x104h */
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};
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struct scatterlist_ex {
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u32 cmd;
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u32 arg;
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u32 sglen;
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struct scatterlist *sg;
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};
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#define DMA_FLAG_NONE (0x00000000)
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#define DMA_FLAG_EN_CHKSUM (0x00000001)
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#define DMA_FLAG_PAD_BLOCK (0x00000002)
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@ -905,23 +898,13 @@ struct msdc_dma {
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u32 flags; /* flags */
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u32 xfersz; /* xfer size in bytes */
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u32 sglen; /* size of scatter list */
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u32 blklen; /* block size */
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struct scatterlist *sg; /* I/O scatter list */
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struct scatterlist_ex *esg; /* extended I/O scatter list */
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u8 mode; /* dma mode */
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u8 intr; /* dma done interrupt */
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u8 padding; /* padding */
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u32 cmd; /* enhanced mode command */
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u32 arg; /* enhanced mode arg */
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u32 rsp; /* enhanced mode command response */
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u32 autorsp; /* auto command response */
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struct gpd *gpd; /* pointer to gpd array */
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struct bd *bd; /* pointer to bd array */
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dma_addr_t gpd_addr; /* the physical address of gpd array */
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dma_addr_t bd_addr; /* the physical address of bd array */
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u32 used_gpd; /* the number of used gpd elements */
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u32 used_bd; /* the number of used bd elements */
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};
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struct msdc_host {
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@ -1310,9 +1310,6 @@ static int msdc_dma_config(struct msdc_host *host, struct msdc_dma *dma)
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bd[j].chksum = (chksum ? msdc_dma_calcs((u8 *)(&bd[j]), 16) : 0);
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}
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dma->used_gpd += 2;
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dma->used_bd += dma->sglen;
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sdr_set_field(MSDC_DMA_CFG, MSDC_DMA_CFG_DECSEN, chksum);
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sdr_set_field(MSDC_DMA_CTRL, MSDC_DMA_CTRL_BRUSTSZ,
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MSDC_BRUST_64B);
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@ -1511,8 +1508,6 @@ done:
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host->dma_xfer = 0;
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if (dma != 0) {
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msdc_dma_off();
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host->dma.used_bd = 0;
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host->dma.used_gpd = 0;
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dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, dir);
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}
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host->blksz = 0;
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@ -2618,8 +2613,6 @@ static int msdc_drv_probe(struct platform_device *pdev)
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host->mrq = NULL;
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//init_MUTEX(&host->sem); /* we don't need to support multiple threads access */
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host->dma.used_gpd = 0;
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host->dma.used_bd = 0;
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mmc_dev(mmc)->dma_mask = NULL;
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/* using dma_alloc_coherent*/ /* todo: using 1, for all 4 slots */
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