On Wed, Jul 31, 2019 at 12:59 AM Souptick Joarder <jrdr.linux@xxxxxxxxx> wrote:
>
> This is dead code since 3.15. If there is no plan to use
> it further, this can be removed forever.
>
Any comment on this patch ?
> Signed-off-by: Souptick Joarder <jrdr.linux@xxxxxxxxx>
> ---
> drivers/video/fbdev/via/via-core.c | 43 --------------------------------------
> 1 file changed, 43 deletions(-)
>
> diff --git a/drivers/video/fbdev/via/via-core.c b/drivers/video/fbdev/via/via-core.c
> index e2b2062..ffa2ca2 100644
> --- 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.
> --
> 1.9.1
>
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