diff options
| author | Geert Uytterhoeven <geert@linux-m68k.org> | 2015-04-24 09:44:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-04-30 16:51:21 +0200 |
| commit | 8e1a4c7f718e5de5019cb5ce6ada657ce1b5ea89 (patch) | |
| tree | 76ef68c2905bbdd2573a6944b62adfb08b9bd417 /drivers/staging/fbtft/fbtft-core.c | |
| parent | a94ac1590b28245225300aaca7ea2de4f3f1e296 (diff) | |
staging: fbtft: Disable DMA support if DMA is not available
If NO_DMA=y:
drivers/built-in.o: In function `fbtft_framebuffer_alloc':
(.text+0xb53cae): undefined reference to `dmam_alloc_coherent'
As DMA support is already optional, make it depend on HAS_DMA.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/fbtft/fbtft-core.c')
| -rw-r--r-- | drivers/staging/fbtft/fbtft-core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c index 53b748be2712..ce645213a539 100644 --- a/drivers/staging/fbtft/fbtft-core.c +++ b/drivers/staging/fbtft/fbtft-core.c @@ -47,9 +47,11 @@ static unsigned long debug; module_param(debug, ulong, 0); MODULE_PARM_DESC(debug, "override device debug level"); +#ifdef CONFIG_HAS_DMA static bool dma = true; module_param(dma, bool, 0); MODULE_PARM_DESC(dma, "Use DMA buffer"); +#endif void fbtft_dbg_hex(const struct device *dev, int groupsize, @@ -856,10 +858,13 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display, #endif if (txbuflen > 0) { +#ifdef CONFIG_HAS_DMA if (dma) { dev->coherent_dma_mask = ~0; txbuf = dmam_alloc_coherent(dev, txbuflen, &par->txbuf.dma, GFP_DMA); - } else { + } else +#endif + { txbuf = devm_kzalloc(par->info->device, txbuflen, GFP_KERNEL); } if (!txbuf) |