staging: mt7621-mmc: Remove transfer mode setting variable

Currently the transfer mode can be chosen between DMA, a size
dependent mode and non-DMA by writing to a proc file. The upstream
driver mtk-sd uses DMA all times. The previous patch removed the
ability to set that option.

Now the remaining uses of the transfer mode setting variable are
cleaned up, because it cannot be changed any more.
Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/dbg.c

@@ -66,13 +66,6 @@ u32 dma_size[4] = {
 	512
 };
 
-enum msdc_mode drv_mode[4] = {
-	MODE_DMA, /* using DMA always */
-	MODE_DMA,
-	MODE_DMA,
-	MODE_DMA
-};
-
 #if defined(MT6575_SD_DEBUG)
 /* for driver profile */
 #define TICKS_ONE_MS  (13000)
@@ -235,14 +228,6 @@ static int msdc_debug_proc_read(struct seq_file *s, void *p)
 	seq_printf(s, "-> MSDC[2] Zone: 0x%.8x\n", sd_debug_zone[2]);
 	seq_printf(s, "-> MSDC[3] Zone: 0x%.8x\n", sd_debug_zone[3]);
 
-	seq_puts(s, "Index<1> + ID:4|Mode:4 + DMA_SIZE\n");
-	seq_puts(s, "-> 0)PIO 1)DMA 2)SIZE\n");
-	seq_puts(s, "-> echo 1 22 0x200 >msdc_bebug -> host[2] size mode, dma when >= 512\n");
-	seq_printf(s, "-> MSDC[0] mode<%d> size<%d>\n", drv_mode[0], dma_size[0]);
-	seq_printf(s, "-> MSDC[1] mode<%d> size<%d>\n", drv_mode[1], dma_size[1]);
-	seq_printf(s, "-> MSDC[2] mode<%d> size<%d>\n", drv_mode[2], dma_size[2]);
-	seq_printf(s, "-> MSDC[3] mode<%d> size<%d>\n", drv_mode[3], dma_size[3]);
-
 	seq_puts(s, "Index<3> + SDIO_PROFILE + TIME\n");
 	seq_puts(s, "-> echo 3 1 0x1E >msdc_bebug -> enable sdio_profile, 30s\n");
 	seq_printf(s, "-> SDIO_PROFILE<%d> TIME<%ds>\n", sdio_pro_enable, sdio_pro_time);

drivers/staging/mt7621-mmc/dbg.h

@@ -79,7 +79,6 @@ enum msdc_mode {
 	MODE_SIZE_DEP = 2,
 };
 
-extern enum msdc_mode drv_mode[4];
 extern u32 dma_size[4];
 
 /* Debug message event */

drivers/staging/mt7621-mmc/sd.c

@@ -1374,12 +1374,7 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq)
 		host->blksz = data->blksz;
 
 		/* deside the transfer mode */
-		if (drv_mode[host->id] == MODE_PIO)
-			host->dma_xfer = 0;
-		else if (drv_mode[host->id] == MODE_DMA)
-			host->dma_xfer = 1;
-		else if (drv_mode[host->id] == MODE_SIZE_DEP)
-			host->dma_xfer = ((host->xfer_size >= dma_size[host->id]) ? 1 : 0);
+		host->dma_xfer = 1;
 		dma = host->dma_xfer;
 
 		if (read) {