video: fbdev: viafb: Remove dead code

This is dead code since 3.15. If there is no plan to use
it further, this can be removed forever.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
[b.zolnierkie: fix patch summary]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1564515200-5020-1-git-send-email-jrdr.linux@gmail.com

diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
index e2b2062..ffa2ca2 100644 (file)
--- a/drivers/video/fbdev/via/via-core.c
+++ b/drivers/video/fbdev/via/via-core.c
@@ -221,49 +221,6 @@ void viafb_release_dma(void)
 }
 EXPORT_SYMBOL_GPL(viafb_release_dma);
 
-
-#if 0
-/*
- * Copy a single buffer from FB memory, synchronously.  This code works
- * but is not currently used.
- */
-void viafb_dma_copy_out(unsigned int offset, dma_addr_t paddr, int len)
-{
-       unsigned long flags;
-       int csr;
-
-       mutex_lock(&viafb_dma_lock);
-       init_completion(&viafb_dma_completion);
-       /*
-        * Program the controller.
-        */
-       spin_lock_irqsave(&global_dev.reg_lock, flags);
-       viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_DONE);
-       /* Enable ints; must happen after CSR0 write! */
-       viafb_mmio_write(VDMA_MR0, VDMA_MR_TDIE);
-       viafb_mmio_write(VDMA_MARL0, (int) (paddr & 0xfffffff0));
-       viafb_mmio_write(VDMA_MARH0, (int) ((paddr >> 28) & 0xfff));
-       /* Data sheet suggests DAR0 should be <<4, but it lies */
-       viafb_mmio_write(VDMA_DAR0, offset);
-       viafb_mmio_write(VDMA_DQWCR0, len >> 4);
-       viafb_mmio_write(VDMA_TMR0, 0);
-       viafb_mmio_write(VDMA_DPRL0, 0);
-       viafb_mmio_write(VDMA_DPRH0, 0);
-       viafb_mmio_write(VDMA_PMR0, 0);
-       csr = viafb_mmio_read(VDMA_CSR0);
-       viafb_mmio_write(VDMA_CSR0, VDMA_C_ENABLE|VDMA_C_START);
-       spin_unlock_irqrestore(&global_dev.reg_lock, flags);
-       /*
-        * Now we just wait until the interrupt handler says
-        * we're done.
-        */
-       wait_for_completion_interruptible(&viafb_dma_completion);
-       viafb_mmio_write(VDMA_MR0, 0); /* Reset int enable */
-       mutex_unlock(&viafb_dma_lock);
-}
-EXPORT_SYMBOL_GPL(viafb_dma_copy_out);
-#endif
-
 /*
  * Do a scatter/gather DMA copy from FB memory.  You must have done
  * a successful call to viafb_request_dma() first.