i2c: tegra: Fix i2c-tegra DMA config option processing

Tegra processors prior to Tegra186 used APB DMA for I2C requiring
CONFIG_TEGRA20_APB_DMA=y while Tegra186 and later use GPC DMA requiring
CONFIG_TEGRA186_GPC_DMA=y.

The check for if the processor uses APB DMA is inverted and so the wrong
DMA config options are checked.

This means if CONFIG_TEGRA20_APB_DMA=y but CONFIG_TEGRA186_GPC_DMA=n
with a Tegra186 or later processor the driver will incorrectly think DMA is
enabled and attempt to request DMA channels that will never be availible,
leaving the driver in a perpetual EPROBE_DEFER state.

Fixes: 48cb635 ("i2c: tegra: Add GPCDMA support")
Signed-off-by: Parker Newman <[email protected]>
Acked-by: Andi Shyti <[email protected]>
Acked-by: Akhil R <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Wolfram Sang <[email protected]>

Author: pnewman-cti

drivers/i2c/busses/i2c-tegra.c

@@ -442,7 +442,7 @@ static int tegra_i2c_init_dma(struct tegra_i2c_dev *i2c_dev)
 	if (IS_VI(i2c_dev))
 		return 0;
 
-	if (!i2c_dev->hw->has_apb_dma) {
+	if (i2c_dev->hw->has_apb_dma) {
 		if (!IS_ENABLED(CONFIG_TEGRA20_APB_DMA)) {
 			dev_dbg(i2c_dev->dev, "APB DMA support not enabled\n");
 			return 0;